СВЕТОВОДНАЯ СТРУКТУРА, ГОЛОГРАФИЧЕСКОЕ ОПТИЧЕСКОЕ УСТРОЙСТВО И СИСТЕМА ФОРМИРОВАНИЯ ИЗОБРАЖЕНИЙ

... 1. Световодная структура, содержащая:первую часть;вторую часть, примыкающую к первой части;первый голографический оптический элемент, расположенный на поверхности первой части и выполненный с возможностью ввода лучей света, излученных внешним устройством отображения, в первую часть таким образом, чтобы обеспечивать, после одного полного внутреннего отражения внутри первой части, распространение лучей света через место стыка первой и второй частей во вторую часть; ивторой голографический оптический элемент, расположенный на поверхности второй части и выполненный с возможностью обеспечения, после по меньшей мере одного полного внутреннего отражения внутри второй части, выхода лучей света из второй части;при этом первая и вторая части имеют различную толщину или разные показатели преломления.2. Световодная структура по п. 1, в которой вторая часть выполнена с возможностью обеспечения прохождения падающего света от объектов окружающей обстановки через себя ко второму голографическому оптическому ...

Vorrichtung zum Abknicken des optischen Weges zweier Projektoren für das auf den Schirm eines binokularen Visorhelmes projizierte rechte und linke Bild

Optical device

An optical device is disclosed for expanding input light in two dimensions in an augmented reality display. The device comprises a waveguide 12 and three linear diffraction gratings H0, H1, H2. An incident beam from a projector illuminates an input grating H0, preferably with polychromatic light, and the light is coupled into the waveguide 12. The other two gratings H1, H2 are at least partially overlaid on top of one another. Light can be diffracted by one grating H1 into a first diffracted order and towards the other grating H2 which can couple the light out of the waveguide 12 towards a viewer. In another arrangement the crossed gratings H1, H2 may be replaced by a photonic crystal (19, figure 16) having a regular array of pillars (20, figure 16) which create a number of diffraction gratings.

HELMET MOUNTED DISPLAY

A display device and system

Holography 3D display

A holographic three dimensional display is provided in which no 3D cross-talk problem arises. The display comprises a display panel 10 representing a hologram image with a back light unit on the rear side of the display panel 10. First and second light path deflecting cells 30a, 30b are positioned in front of the display panel 10 for forming a first prism pattern along a first direction and which rotating by a predetermined angle from a perpendicular axes of the display 10 respectively. The cells may be formed from liquid crystal prisms.

Optical device

Night vision goggles

An optical device suitable for attachment to headgear (13) such as a pilot's helmet, for use as a night vision goggle (11) wherein an image intensifier (shown for one eye only) (19b) whereby radiation in the visible and/or near infra-red portions of the spectrum received from the scene to be viewed is converted to visible light is arranged so that its input (33b) and output (21b) faces are directed respectively away from and towards the scene to be viewed, light from the output face being reflected to the user's eyes by a viewing eyepiece (23b) which intercepts the user's line of sight, and the received radiation being directed onto the input face by an objective and ray-folding means (27b; 29b; 31b). A design of goggle which is lighter and has a smaller forward projection can be achieved in goggles using such optical devices. ...

Display system

Optical system of augmented reality head-up display

An optical system for an augmented reality head-up display includes a picture generation unit 202, a correcting optical unit 204 and a combiner unit 206. The correcting optical unit creates, in a direction of a horizontal field of view 306, a monotonic variation of an optical path length of light rays propagating from the picture generation unit. The combiner redirects light rays propagating from the correcting optical unit toward an eye box 208, producing virtual image(s) 302 which are observed from the eye box. The optical system produces a virtual image surface 310 inclined in the direction of the horizontal field of view for displaying the virtual images at different distances from the eye-box. The virtual image surface has a non-zero angle between projections on a horizontal plane defined by a first and second axis. The first axis is perpendicular to the virtual image surface and extends through an arbitrary intersection point on the virtual image surface. The second axis is parallel ...

Image projection

CLOSE EYE DISPLAY SYSTEM

Holographic object relay for light field display

Disclosed are systems and methods for redirecting light corresponding to a light field or holographic object such that imagery generated by a light field or other display is perceived by a viewer without having to address the display itself.

Wedges for light transformation

Devices, systems and methods that include specialized waveguide assemblies are provided for performing light transformations. Some waveguide assemblies include a waveguide and a compensating lens. The waveguide includes a front surface and a back surface, wherein the waveguide is configured to receive external light at the front surface and transmit the external light through the waveguide to the back surface. The compensating lens is located on the back surface and is configured to direct light emitted from the back surface toward an exit pupil proximate the back surface. The compensating lens has an input surface oriented toward the waveguide and an opposing output surface oriented away from the waveguide. The waveguide can sometimes increase a user's field of view with minimal distortion on a mixed reality display.

Virtual and augmented reality systems and methods having improved diffractive grating structures

Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value.

Metasurfaces with asymetric gratings for redirecting light and methods for fabricating

An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 μm The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 μm where the refractive index is 3.3 or less.

Device and method for determining the orientation of an eye

EYEGLASS DISPLAY LENS SYSTEM EMPLOYING OFF-AXIS OPTICAL DESIGN

An off-axis optical display system is provided. The system comprises an eyeglass lens assembly having the first lens section (30) having a first surface (40), at least a portion of the first surface having a first curvature (25), and a second lens section (20) having a second surface (40), at least a portion of the second surface having a second curvature. The interface comprises an optical layer and conforms to the first curvature of the first surface and the second curvature of the second surface (25). An image source (50-52) is located off-axis with respect to the interface to transmit light along an optical path (10) that reflects off the optical reflective surface (25) of the interface toward an eye of a user. A portion of the optical path may be through air, and refraction is provided at the interface between air and the first lens (36). An aberration correction element is also provided (31- 32).

METHODS AND SYSTEM FOR CREATING FOCAL PLANES USING AN ALVAREZ LENS

Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise a lens assembly comprising two transmissive plates, a first of the two transmissive plates comprising a first surface sag based at least in part on a cubic function, and a DOE to direct image information to a user's eye; wherein the DOE is placed in between the two transmissive plates of the lens assembly, and wherein the DOE is encoded with the inverse of the cubic function corresponding to the surface sag of the first transmissive plate; such that a wavefront created by the encoded DOE is compensated by the wavefront created by the first transmissive plate, thereby collimating light rays associated with virtual content delivered to the DOE.

LOW-PROFILE BEAM SPLITTER

Examples of light projector systems for directing input light from a light source to a spatial light modulator are provided. For example, an optical device is disclosed which includes a first surface having a diffractive optical element, a second surface normal to the first surface, and a third surface arranged at an angle to the second surface. The third surface may be a beam splitting surface that is reflective to light of a first state and transmissive to light of a second state. The diffractive optical element may receive an input beam made up of light having the first state, and convert the input beam into at least a first diffracted beam at a first diffraction angle such that the first diffracted beam is directed toward the third surface and is reflected by the third surface in a direction substantially parallel to the first surface.

METHODS, DEVICES, AND SYSTEMS FOR ILLUMINATING SPATIAL LIGHT MODULATORS

An optical device can include a wedge-shaped light turning element having a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface, which is inclined with respect to the horizontal axis by a wedge angle. A light module, which includes a number of light emitters, can be configured to combine light from the emitters. A light input surface is between the first and the second surfaces and receives light emitted from the emitters. An end reflector is disposed on a side opposite the light input surface. The second surface may be inclined such that a height of the light input surface is less than a height of the side opposite the light input surface. The light coupled into the turning element may be reflected by the end reflector and/or reflected from the second surface towards the first surface.

HIGH-DENSITY ENERGY DIRECTING DEVICES FOR TWO-DIMENSIONAL, STEREOSCOPIC, LIGHT FIELD AND HOLOGRAPHIC HEAD-MOUNTED DISPLAYS

Disclosed are high-density energy directing devices and systems thereof for two- dimensional, stereoscopic, light field and holographic head-mounted displays. In general, the head-mounted display system includes one or more energy devices and one or more energy relay elements, each energy relay element having a first surface and a second surface. The first surface is disposed in energy propagation paths of the one or more energy devices and the second surface of each of the one or more energy relay elements is arranged to form a singular seamless energy surface. A separation between edges of any two adjacent second surfaces is less than a minimum perceptible contour as defined by the visual acuity of a human eye having better than 20/40 vision at a distance from the singular seamless energy surface, the distance being greater than the lesser of: half of a height of the singular seamless energy surface, or half of a width of the singular seamless energy surface.

SYSTEMS, DEVICES, AND METHODS FOR FOCUSING LASER PROJECTORS

Systems, devices, and methods for focusing laser projectors are described. A laser projector includes N = 1 laser diodes, each of which emits laser light having a divergence. Each laser diode is paired with a respective primary or collimation lens to at least reduce a divergence of the laser light that the laser diode produces. Downstream from the primary lens(es) in the optical path(s) of the laser light, a single dedicated secondary or convergence lens converges the laser light to a focus. By initiating the convergence of the laser light at the secondary or convergence lens as opposed to at the primary or collimation lens(es), numerous benefits that are particularly advantageous in laser projection-based wearable heads-up displays are realized.

MULTI-LAYER DIFFRACTIVE EYEPIECE

An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light in a first wavelength range, and a grating coupled to a back surface of the waveguide. The grating is configured to diffract a first portion of the light propagating in the waveguide out of a plane of the waveguide toward a first direction, and to diffract a second portion of the light propagating in the waveguide out of the plane of the waveguide toward a second direction opposite to the first direction. The eyepiece furthers include a wavelength-selective reflector coupled to a front surface of the waveguide. The wavelength selective reflector is configured to reflect light in the first wavelength range and transmit light outside the first wavelength range, such that the wavelength-selective reflector reflects at least part of the second portion of the light back toward the first direction.

NEAR EYE 3D DISPLAY WITH SEPARATE PHASE AND AMPLITUDE MODULATORS

Augmented reality glasses include near eye displays the include sources of imagewise amplitude modulated light optical coupled to spatial phase modulators or active zone plate modulators and optically coupled to eye coupling optics. The sources of imagewise amplitude modulated light can include emissive 2D display panels or light sources coupled to imagewise amplitude modulators. The eye coupling optics can include volume holographic diffraction gratings.

METHODS, DEVICES, AND SYSTEMS FOR ILLUMINATING SPATIAL LIGHT MODULATORS

An optical device comprising may include a light turning element. The optical device can include a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface. The optical device may include a light module that includes a plurality of light emitters. The light module can be configured to combine light for the plurality of emitters. The optical device can further include a light input surface that is between the first and the second surfaces and is disposed with respect to the light module to receive light emitted from the plurality of emitters. The optical device may include an end reflector that is disposed on a side opposite the light input surface. The light coupled into the light turning element may be reflected by the end reflector and/or reflected from the second surface towards the first surface.

DISPLAY SYSTEM WITH VIDEO SEE-THROUGH

A display system with video see-through eye display unit is disclosed. The eye display unit includes: at least one camera unit; at least one image forming module; and an optical deflection module including at least one double sided light reflecting optical element which is at least partially reflecting to light arriving from both sides thereof. The camera unit is configured for collecting light arriving from a region of interest of a scene along a first optical path intersecting the optical deflection module, and generating image data indicative of the region of interest. The image forming module is configured for receiving imagery data indicative of images to be projected to an eye of a user, and generating and projecting the received images to propagate along a second optical path intersecting the optical deflection module. The double sided light reflecting optical element of the optical deflection module is arranged in the display system to be located in front of the eye while intersecting ...

DISPLAY DEVICE

A display device (10) is provided. The display device comprises an array of light emitting elements (16). The display device further comprises a plurality of optical elements (18) for receiving light from the array of light emitting elements. Each optical element is configured to provide a collimated light beam (20).

EXIT PUPIL EXPANDING DIFFRACTIVE OPTICAL WAVEGUIDING DEVICE

An optical device is disclosed for expanding input light in two dimensions in an augmented reality display. The device comprises a waveguide (12) and three linear diffraction gratings H0, H1, H2. An incident beam from a projector illuminates an input grating H0 with polychromatic light, and the light is coupled into the waveguide (12). The other two gratings H1, H2 are overlaid on top of one another. Light can be diffracted by one grating H1 into a first diffracted order and towards the other grating H2 which can couple the light out of the waveguide (12) towards a viewer. In another arrangement the crossed gratings H1, H2 may be replaced by a photonic crystal (19) having a regular array of pillars (20) which create a number effective diffraction gratings.

AUTO-STEREOSCOPIC AUGMENTED REALITY DISPLAY

In embodiments of an auto-stereoscopic augmented reality display, the display device is implemented with an imaging structure that includes a waveguide for see through viewing of an environment. The waveguide also transmits light of a virtual image that is generated as a near-display object to appear at a distance in the environment. The imaging structure includes switchable diffractive elements that are integrated in the waveguide and configured in display zones. The switchable diffractive elements are switchable to independently activate the display zones effective to correct for an accurate stereopsis view of the virtual image that appears at the distance in the environment.

광학 윈도우 시스템 및 이를 포함하는 투시형 디스플레이 장치

... 광학 윈도우 시스템은 제1방향을 향하는 제1영상의 광의 경로를 바꾸어 제2방향을 향하게 하고 상기 제2방향으로 입사되는 광에 대해서는 반투명한 경로 전환 부재; 상기 경로 전환 부재에 의해 경로가 변환된 상기 제1영상의 광을 관찰자 위치에 포커싱하는 포커싱 부재;를 포함한다. 상기 경로 전환 부재가 점유하는 공간의 상기 제1방향의 길이(W)과 상기 제2방향의 길이(t)에 의해 정의되는 각도 θ(tan-1(t/W))는 45°보다 작은 값을 가지며, 이에 따라 시스템 두께를 줄이며 넓은 시야각을 가질 수 있다.

홀로그래픽 헤드 업 표시 장치

... 홀로그래픽 헤드 업 표시 장치는 가간섭성의 빛을 투사하는 광원부, 상기 가간섭성의 빛을 변조하는 광변조부, 상기 변조된 빛을 포커싱하는 중계 광학계, 상기 중계 광학계의 초점 위치에 위치하고 상기 중계 광학계를 통해 입사되는 빛을 반사하는 반사 영역 및 상기 반사 영역의 주변에 위치하고 상기 중계 광학계를 통해 입사되는 빛을 흡수하는 흡수 영역을 포함하는 필터 미러, 및 상기 필터 미러에서 반사되는 빛을 부분적으로 투과시키고 부분적으로 반사하는 반투과 미러를 포함한다.

HOLOGRAM REAR-VIEW MIRROR

The present invention relates to a hologram rear-view mirror, including: a camera formed at a point which an existing rear-view mirror of a vehicle faces; a projector connected to film in real time to acquire a video; and a screen formed in a hologram at a place which the projector faces such that the video of desired images is able to be shown at a comfortable place using an existing rear-view mirror, wherein a hologram projector for storing the hologram, which is the image of the screen, is formed to be integrated with a projector or various types of film projectors to project the image onto the screen formed in hologram using the projector. Accordingly, the present invention is configured to project a reference beam onto hologram using a laser of the hologram and make the reference beam matched to the image of the projector by adjusting the size of the image to be matched to the image size of the projector or the various types of film projectors. COPYRIGHT KIPO 2017 ...

Privacy display, dual-mode privacy display system, and privacy display method

A privacy display provides a private image exclusively visible within a viewing cone of a viewbox. The privacy display includes a light guide to guide light, a diffraction grating configured to diffractively couple out a portion of the guided light as diffractively coupled-out light and to direct the diffractively coupled-out light into the viewbox, and a light valve array configured to modulate the diffractively coupled-out light to provide the private image. An extent of the viewbox is determined by a collimation factor of the guided light. A dual-mode privacy display system further includes a broad-angle backlight configured to provide broad-angle light to separately provide a public image visible both inside and outside the viewing cone. The private image may be provided in a privacy mode and the public image may be provided in a public mode of the dual-mode privacy display system.

Image display apparatus

An image display apparatus includes an image light generator that generates video light modulated based on a video signal, a light diffracting section (first diffractive optical element) that diffracts the video light outputted from the image light generator, a light sweeper (optical scanner) that spatially sweeps the video light, and a reflector including a light diffracting section (second diffractive optical element) that diffracts the video light swept by the light sweeper, and the light diffracting section (first diffractive optical element) is provided on an optical path between the image light generator and the light sweeper. The light diffracting section (first diffractive optical element) preferably has a fixed interval between interference fringes, and the light diffracting section (second diffractive optical element) preferably has portions where intervals between interference fringes differ from each other.

Lightguide with multiple in-coupling holograms for head wearable display

PROXIMAL IMAGE PROJECTION SYSTEMS

In some aspects and preferred embodiments eyeglasses including projection optics to allow a wide field of view and high-resolution are disclosed.

DISPLAY DEVICE, HEAD-MOUNTED DISPLAY, DISPLAY METHOD AND DISPLAY PROGRAM

A display device is provided with a laser light source for emitting laser beams, and a holographic optical element on which the laser beams are incident. The display device visually recognizes an image corresponding to the laser beams which have passed through the holographic optical element. The display device is further provided with a correction means for correcting the laser power of the laser beam source on the basis of the discrepancy between the read-out wavelength, which is the wavelength of the laser beams from the laser light source, and the optimal diffraction wavelength, which is the wavelength describing the diffraction efficiency at which the interference fringe formed inside the holographic optical element is highest. As a result, it is possible to appropriately reduce uneven brightness and uneven color that are caused by the discrepancy between the read-out wavelength and the optimal diffraction wavelength.

IMAGE COMBINER AND IMAGE DISPLAY UNIT

When in use, a platy unit (5) equivalent to a glasses lens and constituted of an optical material is positioned in front of the eyes of a user located in the vicinity of the exit pupil (P) of an image combiner (1). The image combiner (1) allows a light beam from an image display element (2) to superimposed on a light beam passing through the thickness of the platy unit (5) from the front of the platy unit (5) for guiding to the eyes. A light beam from the image display element (2) is diffraction-reflected off a reflection type HOE (6) in the platy unit (5) before reaching the eyes of the user. A wavelength at which a diffraction efficiency is maximum when a main light beam emitted from the center of the display unit of the element (2) is diffraction-reflected off the HOE (6) is substantially different from a wavelength at which a diffraction efficiency is maximum when a main light beam emitted from the outer-most peripheral unit in a specified direction of the display unit is diffraction-reflected ...

Compact near-eye hologram display

An apparatus includes a holographic film having one or more reflective holograms recorded therein. One or more light sources positioned to direct light toward a corresponding one of the one or more holograms, and a dynamic mask positioned between the one or more light sources and the holographic film to spatially modulate light traveling between the one or more light sources and the one or more reflective holograms but not spatially modulate ambient light traveling through the hologram.

Photonic integrated circuit illuminator

Methods and systems for providing illumination for depth sensing are provided. In one example, an apparatus comprises an illuminator, an optical sensor, and a controller. The illuminator comprises a photonic integrated circuit (PIC) and a diffractive optical element (DOE). The PIC including a laser source and at least one waveguide including optical turning features. The at least one waveguide propagates light transmitted by the laser source along a first axis parallel to a top surface of the PIC. The optical turning features diverts the light to form collimated light beams to exit the at least one waveguide and the top surface along a second axis. The DOE can diffract and project the collimated light beams. The optical sensor can detect the collimated light beams reflected off an object. The controller can determine a depth of the object with respect to the apparatus based on the detection.

AUGMENTED REALITY DEVICE BASED ON WAVEGUIDE WITH HOLOGRAPHIC DIFFRACTIVE GRATING STRUCTURE AND APPARATUS FOR RECORDING THE HOLOGRAPHIC DIFFRACTIVE GRATING STRUCTURE

Provided is an augmented reality (AR) device based on a waveguide with a holographic diffractive grating structure and an apparatus for recording the holographic diffractive grating structure. The apparatus includes a light source, a beam splitter, a first amplitude filter and a first triangular prism that are arranged on a path of a first light beam, and a second amplitude filter and a second triangular prism that are arranged on a path of a second light beam, in which a first part of the first light beam passes through the first triangular prism without attenuation, a second part of the first light beam passes through the first triangular prism after being attenuated, and the second light beam passes through the second triangular prism after being attenuated, and the holographic diffractive grating structure is recorded between the first triangular prism and the second triangular prism. 1. An apparatus for recording a holographic diffractive grating structure , the apparatus comprising:a light source configured to output light;a beam splitter configured to split the light output from the light source into a first light beam and a second light beam;a first amplitude filter and a first triangular prism that are provided on a path of the first light beam; anda second amplitude filter and a second triangular prism that are provided on a path of the second light beam,wherein the first amplitude filter is provided such that a first part of the first light beam is directed to the first triangular prism without passing through the first amplitude filter and a second part of the first light beam, which is different from the first part, is directed to the first triangular prism after being attenuated by passing through the first amplitude filter,wherein the first triangular prism is provided such that the first part of the first light beam is incident on a first surface of the first triangular prism, which corresponds to one of equal sides of an isosceles triangle, and ...

Systems, devices, and methods for curved waveguides integrated with curved eyeglass lenses

WHUDs that employ such curved transparent combiners are also described.

See-through computer display systems with vision correction and increased content density

Provided herein are examples of an impact resistant glass-waveguide configuration for a see-through head-worn computer display. In embodiments, the configuration includes vision correction and content density control through electrochromic and/or photochromic systems.

Suppression of stray light in head worn computing

Aspects of the present invention relate to suppression of stray light in head worn computing.

OPTICAL APPARATUS, IMAGE DISPLAY APPARATUS, AND DISPLAY APPARATUS

An optical apparatus into which light emitted from an image forming apparatus enters, in which the light is guided, and from which the light is emitted includes a light guide plate 30, first deflection means 41, second deflection means 42, and third deflection means 43. The first deflection means 41 deflects light incident on the light guide plate 30 in such a manner that the light is totally reflected in the light guide plate 30. The second deflection means 42 deflects the light that has propagated in the light guide plate 30 by total reflection in such a manner as to cause the light to be emitted from the light guide plate 30. The third deflection means 43 deflects the light that has been deflected by the first deflection means 41 and that has propagated in the light guide plate 30 by total reflection toward the second deflection means 42. An incident angle of the light emitted from a center point of an image forming region of the image forming apparatus on the light guide plate is an ...

AUGMENTED REALITY DEVICES FOR HAZARDOUS CONTAMINANT TESTING

Aspects of the disclosure relate to augmented reality devices for generating a composite scene including a real-world test environment and an augmented reality overlay visually representing a test area of the environment. Some devices can include wearable displays for displaying an overlay to a user, and other devices can include projectors for illuminating the test environment with the overlay.

Virtual image display device including first and second light guiding units and manufacturing method thereof

A virtual image display device includes a display light guiding unit, and an image forming unit that emits image light to the display light guiding unit, the display light guiding unit includes a first light guiding unit that guides image light corresponding to a first angle of view, and a second light guiding unit that guides image light corresponding to a second angle of view, among angles of view of image light emitted from the image forming unit, and the first light guiding unit and the second light guiding unit respectively include incident side diffraction elements that take the image light beams into the inside, and emission side diffraction elements that emit the image light beams to the outside.

OPTICAL CONFIGURATIONS FOR HEAD WORN COMPUTING

Aspects of the present invention relate to optical systems in head worn computing.

WAVEGUIDE IMAGE COMBINERS FOR AUGMENTED REALITY DISPLAYS

A waveguide image combiner is used to transmit a monochrome or full-color image in an augmented reality display. The combiner uses multiple stacked substrates and multiple pairs of incoupling and outcoupling VHOEs to expand a first FOV and an image expander to expand the second or perpendicular FOV. This suitably provides an expanded FOV that offers a diagonal FOV≥50°, a horizontal FOV≥40 and a vertical FOV≥25°. The combiner also delivers a large horizontal eye box up to 20 mm and a vertical eye box of 10 mm while maintaining high light efficiency of the real scene (e.g. >80%). The system is able to use a light engine based on broadband (10 nm≤Δλ≤40 nm) LEDs and maintain a large horizontal field of view and high transmission of the real imagery. The approach resolves issues with current embodiments including astigmatism, image overlap, color balance, and small light engine pupils leading to reduced eye boxes.

COMB-SHIFTED SKEW MIRRORS

Optical systems having comb-shifted sets of holograms across different regions of a grating medium are disclosed. A first set of holograms may be formed in a first region of the grating medium and a second set of holograms may be formed in a second region of the grating medium. Each of the holograms in the first set may have a different respective grating frequency from a first set of grating frequencies. Each of the holograms in the second set may have a different respective grating frequency from a second set of grating frequencies. The second set of grating frequencies may be located within adjacent frequency gaps between the grating frequencies in the first set of grating frequencies. Comb-shifted sets of holograms may be used to perform pupil equalization, output coupling, input coupling, cross coupling, or other operations.

VIRTUAL REALITY HAT APPARATUS

A virtual reality hat is a baseball style cap that functions as a virtual reality headset having a double brim that hinges at the attachment point of the crown and the bottom brim portion is able to hinge downward exposing a cell phone holder and a lens that function together to provide virtual reality to the wearer when desired. The brims collapse together in an instant to conceal the virtual reality headset.

Holographic Substrate-Guided Wave-Based See-Through Display

A holographic substrate-guided wave-based see-through display can has a microdisplay, capable of emitting light in the form of an image. The microdisplay directs its output to a holographic lens, capable of accepting the light in the form of an image from the microdisplay, and capable of transmitting the accepted light in the form of an image. The holographic lens couples its output to an elongate transparent substrate, capable of accepting the light in the form of an image from the holographic lens at a first location, and transmitting the light in the form of an image along a length of the substrate by total internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of an image at the second location. The substrate couples out what it receives to a transparent holographic grating, capable of accepting the light transmitted from the elongate substrate and transmitting it to a location outside ...

Virtual rigid framework for sensor subsystem

An apparatus for dynamically determining a displacement of a target sensor in an electronic system is disclosed. The apparatus can comprise a non-line-of-sight sensor rigidly mounted on or proximate to the target sensor and configured to measure a parameter that varies with the displacement of the target sensor. The apparatus further can comprise at least one processor coupled to the non-line-of-sight sensor and configured to compute the displacement of the target sensor based on the parameter, and to compute an adjustment value based on the computed displacement.

SEE-THROUGH COMPUTER DISPLAY SYSTEMS

A see-through head mounted display with controllable light blocking includes an optics module comprising a light source and image source positioned on a same side of an angled partially-reflective surface, wherein the light source projects light off the surface to the image source which reflects the light as image light to the surface which transmits the image light along a first axis. The display also includes a flat combiner positioned to reflect the image light off of a first side and simultaneously transmit incident light through the first and a second side, along an optical axis perpendicular to the first axis to provide a view of a displayed image overlaid onto a see-through view of the environment, and a controllable light blocking element arranged generally parallel to the flat combiner and in front of the second side to block light incident on the same optical axis as the image light.

DISPLAY DEVICE

In an optical system, a first optical section having positive power, a second optical section provided with a first diffractive element and having positive power, a third optical section having positive power, and a fourth optical section provided with a second diffractive element and having positive power are disposed along a light path of image light emitted from an image light generation device. A first intermediate image of the image light is formed between the first optical section and the third optical section, a pupil is formed in the vicinity of the third optical section, a second intermediate image of the image light is formed between the third optical section and the fourth optical section, and the fourth optical section collimates the image light to form an exit pupil. The first diffractive element and the second diffractive element are in a conjugate relation or a roughly conjugate relation.

Multi-image display apparatus providing holographic image

A multi-image display apparatus includes a light source configured to emit a first wavelength light, a second wavelength light, and a third wavelength light, a spatial light modulator configured to modulate the first wavelength light, the second wavelength light, and the third wavelength light to form a first image including a first color holographic image, a second color holographic image, and a third color holographic image, a polarization selective lens configured to focus the first image having only a first polarization component and transmit a second image having only a second polarization component without refraction, the second image being provided to the polarization selective lens along a different path from the first image, wherein chromatic aberration of the polarization selective lens is offset by adjusting a depth of the first color holographic image, the second color holographic image, and the third color holographic image.

HOLOGRAPHIC VIRTUAL REALITY DISPLAY

Virtual reality (VR) displays are computer displays that present images or video in a manner that simulates a real experience for the viewer. In many cases, VR displays are implemented as head-mounted displays (HMDs) which provide a display in the line of sight of the user. Because current HMDs are composed of a display panel and magnifying lens with a gap therebetween, proper functioning of the HMDs limits their design to a box-like form factor, thereby negatively impacting both comfort and aesthetics. The present disclosure provides a different configuration for a virtual reality display which allows for improved comfort and aesthetics, including specifically at least one coherent light source, at least one holographic waveguide coupled to the at least one coherent light source to receive light therefrom, and at least one spatial light modulator coupled to the at least one holographic waveguide to modulate the light.

OPHTHALMIC LENS HAVING A HOLOGRAPHIC MIRROR ON A LOW-BIREFRINGENCE BASE LENS

An ophthalmic lens and a method of manufacturing the ophthalmic lens, the ophthalmic lens including a base lens that includes at least a layer of low-birefringence material and at least one holographic component recorded on a surface of the layer of low-birefringence material, and an auxiliary lens assembled to the base lens.

Systems, devices, and methods for eyebox expansion in wearable heads-up displays

Systems, devices, and methods for expanding the eyebox of a wearable heads-up display are described. A light guide with an expanded eyebox includes a light guide material, an in-coupler, an outcoupler, and a gradient refractive index (GRIN) material. The in-coupler and the out-coupler may comprise a GRIN material. An eyeglass lens with expanded eyebox includes a light guide with expanded eyebox. A wearable heads-up display includes an eyeglass lens including a light guide with an expanded eyebox.

Metasurfaces with asymmetric gratings for redirecting light and methods for fabricating

An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 μm. The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 μm where the refractive index is 3.3 or less.

See-through computer display systems with vision correction and increased content density

Provided herein are examples of an impact resistant glass-waveguide configuration for a see-through head-worn computer display. In embodiments, the configuration includes vision correction and content density control through electrochromic and/or photochromic systems.

Image display device

An image display device includes an image forming device, collimating optical system, and optical device, with the optical device including a light guide plate, first diffraction grating member and second diffraction grating member which are made up of a volume hologram diffraction grating, and with central light emitted from the pixel of the center of the image forming device and passed through the center of the collimating optical system being input to the light guide plate from the near side of the second diffraction grating member with a certain angle. Thus, the image display device capable of preventing occurrence of color irregularities, despite the simple configuration, can be provided.

BIOCULAR HOLOGRAPHIC HELMET MOUNTED DISPLAY

A helmet mounted display uses a see-through visor (15) holographic combiner to provide, in the normal field of view of a helicopter pilot, a pair of images derived from an image source such as a miniature cathode ray tube (10). A source of the video display may be an infrared sensor mounted on an external turret underneath the helicopter. The turret rotates in response to helmet movements so that the pilot is continually provided with a dual image from the CRT display (10) which corresponds with the external scene as visible through the visor (15).

BINOCULAR HOLOGRAPHIC HELMET MOUNTED DISPLAY

RECORDING A LATENT HOLOGRAPHIC GRATING AND AMPLIFICATION OF ITS DYNAMIC RANGE

VIDEO PROJECTOR

PROBLEM TO BE SOLVED: To provide a video projector which is miniaturized and by which a picture can be stably observed while keeping high resolution. SOLUTION: This video projector is constituted so that a luminous flux from a light source 1 is converged through a condensing lens 2 and focused on a space filter 3. This focal point is a secondary point light source, and a divergent spherical wave from the point light source is converted to a parallel luminous flux by a hologram optical device 4 for illumination. This parallel luminous flux illuminates a transmission type spatial modulator (color liquid crystal display device) 5, is converted to convergent light by a hologram optical device 6 for an object, and focused at a pupil 7. This point is a secondary light source image. This image becomes the Fourier-transformed image (diffraction image surface) of the video information of the spatial modulator, passes through an eye ball lens 8, and forms a geometrical picture on a retina 9. COPYRIGHT ...

IMAGE DISPLAY DEVICE AND OPTICAL DEVICE

PROBLEM TO BE SOLVED: To provide an image display device which requires no increase in the size of lens provided in a virtual image optical system. SOLUTION: An image display device is provided with an image formation device 110, first light guide means 120 and second light guide means 130. The first light guide means 120 comprises: (B-1) a first light guide plate 121 which allows a part of incident light to be propagated through the inner part thereof by a total reflection and thereafter to be emitted therefrom; and (B-2) a reflection type volume hologram diffraction grating 122 provided on the first light guide plate 121. The second light guide means 130 comprises a second light guide plate 131, first deflection means 140 and second deflection means 150. COPYRIGHT: (C)2012,JPO&INPIT ...

Lichtleitvorrichtung und Anzeigevorrichtung zur Darstellung von Szenen

BINOCULAR HOLOGRAPHIC HELMET MOUNTED DISPLAY

Display system

A holographic display system and a method of adjusting a holographic display system are disclosed. A first plurality of pixels (for example, upon a first spatial light modulator/SLM) is arranged to display a first hologram, receive light of a first wavelength from light source 603, and output spatially-modulated light according to the first hologram, along a first optical path 609. A first Fourier transform lens on the first optical path forms a first holographic reconstruction at a replay plane 650. A second plurality of pixels (for example, upon a second spatial light modulator/SLM) is arranged to display a second hologram, receive light of a second wavelength, and output spatially modulated light according to the second hologram, along a second optical path (which may be collinear with the first optical path 609). The holograms may be computer-generated. A second Fourier transform lens on the second optical path forms a second holographic reconstruction at the replay plane. A first optical ...

Holographic projector

Holographic projection system 400 comprising: light receiving surface 450; light source 470; Spatial Light Modulator (SLM) 480; detector 460. Computer-Generated Hologram (CGH) represented on SLM forming an image on the screen, where the image (700, Fig. 7) comprises a primary region (710, Fig. 7) comprising information for the user, and a secondary image region (720, Fig. 7). The detector 460 senses optical power of light travelling to or from the secondary image region (720, Fig. 7). The shape of the active light detecting area may be a one dimensional slit, dot, circle, disk, square, diamond, lozenge, or cross. The system may comprise a controller arranged to perform optical alignment, comprising changing the position of the image on the screen. The secondary region may comprise control information for the system. The secondary region may be peripheral to the primary region. The CGH may correspond to a Fourier or Fresnel hologram. The CGH may comprise a component arranged to perform a ...

Heads-up display for eyewear

Device for augmented reality or virtual reality display

A waveguide 2 suitable for use in an augmented or virtual reality display comprising an: input structure 4; output structure 10; and intermediate diffractive structure 6 or 8 that provides one-dimensional light expansion. Light expansion is achieved by the diffractive features of the intermediate structure diffracting input light along the x-axis and then towards the output structure at a plurality of spaced positions. A second intermediate diffractive structure 8 or 6 may have diffractive features at a second angle that expand the light in an opposite direction to the first intermediate structure. The angles of the first and second diffractive features may be equal and opposite. The first 6 and second 8 gratings may be: spaced apart on the waveguide; or at least partially overlaid as a pair of crossed gratings (106, Fig. 2). The output diffractive structure 10 may comprises two diffractive optical elements, each provided in a photonic crystal, overlaid on one another in or on the waveguide ...

Heads up display for eyewear

Binocular optical display system

Optical system

A display device and system

Holographically-projected virtual retinal display

HELMET MOUNTED DISPLAY

Display for use in an augmented reality or virtual reality device

Holographic system and pupil expander therefor

Holography includes a spatial light modulator (SLM) displaying a hologram 1150 of an image and outputting spatially modulated light encoded with the hologram. A pupil expander 1100 includes light guides 1120 with input 1122 and output 1124 ends and couples 1160 the light output by the SLM into the input end of each light guides where it is output from their output ends to a viewing area. Each of the light guides propagates the light received at its input so as to expand an exit pupil in a first dimension which may correspond to a dimension of the viewing area. The output ends of light guides may be in a one-dimensional array in the first dimension. A light guide splitter may couple the spatially modulated light output by the SLM into the input ends of the light guides at the same time. Holography including a SLM has light guides which form a replica of the input spatially modulated light so that they expand an exit pupil in a first dimension. Holography including a SLM outputs light channels ...

Pupil expander integrity

A holographic system comprises: a display device comprising a spatial light modulator 540 (e.g., reflective liquid crystal on silicon, LCOS, SLM) to display a diffractive pattern of an image and output spatially modulated light in accordance with the diffractive pattern; a waveguide pupil expander to receive spatially modulated light from the display device at an input port thereof and expand the system viewing window; and controller 502 to respond to a signal indicating mechanical, structural or optical failure of the waveguide pupil expander such as detection of the breakage of glass of the waveguide pupil expander. In response to the failure signal, the controller may prevent further emission of spatially modulated light, e.g., reduce a light source drive signal or switch off the light source; further, light absorbing filler expandable foam material may be released. A viewer tracking system may detect stray (e.g., laser or infrared, IR) light on a monitored viewer’s face, optionally ...

Image projection

A diffractive structure, hologram or kinoform, 1554 arranged to spatially modulate light transformable by a viewing system into a target image is disclosed. The diffractive structure is configured to generate a plurality of discrete light patterns 1552 via distinct holographic channels. Each pattern corresponds to a different part of the target image. The shape of each discrete light pattern may substantially correspond to that of an entrance aperture of the viewing system (1505, Fig. 5), which might be an eye. The structure may spatially modulate the phase of light. A waveguide (1508, Fig. 5) may be interposed between the diffractive structure and the viewer, and can be arranged for pupil expansion. The diffractive structure and lightguide may be part of a system, which can be a holographic projector. The holographic channels may be separated (Fig. 15b) or partially separated, and may follow distinct optical paths.

DEVICE FOR THE DETERMINATION OF THE ORIENTATION OF AN EYE

Methods, devices, and systems for illuminating spatial light modulators

An optical device can include a wedge-shaped light turning element having a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface, which is inclined with respect to the horizontal axis by a wedge angle. A light module, which includes a number of light emitters, can be configured to combine light from the emitters. A light input surface is between the first and the second surfaces and receives light emitted from the emitters. An end reflector is disposed on a side opposite the light input surface. The second surface may be inclined such that a height of the light input surface is less than a height of the side opposite the light input surface. The light coupled into the turning element may be reflected by the end reflector and/or reflected from the second surface towards the first surface.

Virtual/augmented reality system having reverse angle diffraction grating

A display subsystem for a virtual image generation system comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever. The drive assembly is configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light diverges from a longitudinal axis coincident with the fulcrum. The display subsystem further comprises an optical modulation apparatus configured for converging the light from the optical fiber towards the longitudinal axis, and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to an end user.

Exit pupil expanding diffractive optical waveguiding device

An optical device is disclosed for expanding input light in two dimensions in an augmented reality display. The device comprises a waveguide (12) and three linear diffraction gratings H0, H1, H2. An incident beam from a projector illuminates an input grating H0 with polychromatic light, and the light is coupled into the waveguide (12). The other two gratings H1, H2 are overlaid on top of one another. Light can be diffracted by one grating H1 into a first diffracted order and towards the other grating H2 which can couple the light out of the waveguide (12) towards a viewer. In another arrangement the crossed gratings H1, H2 may be replaced by a photonic crystal (19) having a regular array of pillars (20) which create a number effective diffraction gratings.

Architectures and methods for outputting different wavelength light out of waveguides

Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.

Architectures and methods for outputting different wavelength light out of waveguides

Architectures are provided for selectively outputting light for forming images, the light having different wavelengths and being outputted with low levels of crosstalk. In some embodiments, light is incoupled into a waveguide and deflected to propagate in different directions, depending on wavelength. The incoupled light then outcoupled by outcoupling optical elements that outcouple light based on the direction of propagation of the light. In some other embodiments, color filters are between a waveguide and outcoupling elements. The color filters limit the wavelengths of light that interact with and are outcoupled by the outcoupling elements. In yet other embodiments, a different waveguide is provided for each range of wavelengths to be outputted. Incoupling optical elements selectively incouple light of the appropriate range of wavelengths into a corresponding waveguide, from which the light is outcoupled.

Encoded energy waveguides for holographic super resolution

Disclosed embodiments include an energy device having an array of waveguide elements configured to direct energy along a plurality of energy propagation paths through the device, and an energy encoding element operable to limit propagation of energy along the plurality of paths. Energy uninhibited propagation paths may extend through first and second regions of energy locations, the first and seconds regions being overlapping and offsetting, and the energy encoding element may limit propagation of energy through each energy location in the first and second regions to one uninhibited energy propagation path. In an embodiment, the energy encoding element may limit propagation along uninhibited propagation paths through the first region at a first moment in time, and through the second region at a second moment in time. An energy system comprising an energy device subsystem and an energy combiner may be configured to superimpose energy from the energy locations.

Low-profile beam splitter

Examples of light projector systems for directing input light from a light source to a spatial light modulator are provided. For example, an optical device is disclosed which includes a first surface having a diffractive optical element, a second surface normal to the first surface, and a third surface arranged at an angle to the second surface. The third surface may be a beam splitting surface that is reflective to light of a first state and transmissive to light of a second state. The diffractive optical element may receive an input beam made up of light having the first state, and convert the input beam into at least a first diffracted beam at a first diffraction angle such that the first diffracted beam is directed toward the third surface and is reflected by the third surface in a direction substantially parallel to the first surface.

Mixed reality-aided surgical assistance in orthopedic surgical procedures

An example system includes a first device configured to display a first presentation to a first user, wherein the first presentation includes one or more virtual elements configured to assist the first user in an orthopedic surgical procedure; and a second device configured to display a second presentation to a second user, wherein the second user provides surgical assistance on the orthopedic surgical procedure. In this example, the second device is further configured to display content that informs the second user on one or more previously- executed steps of the orthopedic surgical procedure.

Auto-stereoscopic augmented reality display

In embodiments of an auto-stereoscopic augmented reality display, the display device is implemented with an imaging structure that includes a waveguide for see through viewing of an environment. The waveguide also transmits light of a virtual image that is generated as a near-display object to appear at a distance in the environment. The imaging structure includes switchable diffractive elements that are integrated in the waveguide and configured in display zones. The switchable diffractive elements are switchable to independently activate the display zones effective to correct for an accurate stereopsis view of the virtual image that appears at the distance in the environment.

ENCODED ENERGY WAVEGUIDES FOR HOLOGRAPHIC SUPER RESOLUTION

VIRTUAL/AUGMENTED REALITY SYSTEM HAVING REVERSE ANGLE DIFFRACTION GRATING

A display subsystem for a virtual image generation system comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever. The drive assembly is configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light diverges from a longitudinal axis coincident with the fulcrum. The display subsystem further comprises an optical modulation apparatus configured for converging the light from the optical fiber towards the longitudinal axis, and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to an end user.

SYSTEM AND METHOD FOR HOLOGRAPHIC IMAGE-GUIDED NON-VASCULAR PERCUTANEOUS PROCEDURES

Holographic image-guidance can be used to track an interventional device during a non-vascular percutaneous procedure. The holographic image guidance can be provided by a head-mounted device by transforming tracking data and body image data to a common coordinate system and creating a holographic display relative to a patient's body to track the interventional device during the non-vascular percutaneous procedure. The holographic display can also include graphics to provide guidance for the physical interventional device as it travels through the patient's anatomy.

Information System and Method for Providing Information Using a Holographic Element

An information system and a method for providing information in correlation with light that is incident on an eye includes a holographic element disposed in front of the eye and a device capable of recording optical signals which detects light that is incident on the eye via the holographic element. The device capable of recording optical signals detects light which is diffracted by the holographic element before the light impinges on the eye such that the diffracted light does not enter the eye.

Head-mounted display apparatus

A head-mounted display apparatus includes an image display device, a wearing device with which the image display device is worn on a head of an observer, and an attachment member with which the image display device is attached to the wearing device. The attachment member is capable of adjusting a position of the image display device relative to the wearing device independently in a first direction and in a second direction, the first direction being defined by a virtual line connecting centers of eyes of the observer, the second direction being perpendicular to the first direction and extending vertically with respect to the observer.

Optical device and virtual image display

An optical device includes: a light guide plate receiving, for each of N types of wavelength bands, a plurality of parallel light beams with different incident angles each corresponding to view angles, and guiding the received parallel light beams; a first and a second volume hologram gratings of reflection type having a diffraction configuration which includes N types of interference fringes each corresponding to the N types of wavelength bands, and diffracting/reflecting the parallel light beams. The optical device satisfies for each wavelength band, a relationship of ‘P>L’, where ‘L’ represents a central diffraction wavelength in the first and second volume hologram gratings, defined for a parallel light beam corresponding to a central view angle, and ‘P’ represents a peak wavelength of the parallel light beams.

Display Systems Having Monolithic Arrays of Light-Emitting Diodes

An electronic device may include a display having a monolithic array of light-emitting diodes mounted to a surface of a substrate layer. The diodes may include contact pads. Driver circuitry may independently drive each of the diodes in the array using drive signals. The driver circuitry may be formed on a driver integrated circuit. Bond pads may be formed on a surface of the integrated circuit. Copper pillars may be grown on the bond pads. In another suitable arrangement, the driver circuitry may be formed on a driver printed circuit board coupled to an interposer by a flexible printed circuit. The interposer may include bond pads and copper pillars grown on the bond pads. The contact pads on each of the diodes may be simultaneously bonded to the copper pillars. A surface of the substrate layer may be patterned to form light redirecting elements if desired. 1. A display system comprising:a reflective display panel configured to produce image light by spatially modulating illumination light; a substrate layer, and', 'an array of light-emitting diodes on a surface of the substrate layer, the array of light-emitting diodes being configured to emit the illumination light through the substrate layer; and, 'a monolithic array configured to emit the illumination light, the monolithic array comprisinga driver integrated circuit that is separate from the monolithic array and that includes driver circuitry, wherein the driver circuitry is configured to generate drive signals that control the monolithic array to emit the illumination light.2. The display system of claim 1 , further comprising:bond pads on a surface of the driver integrated circuit; andcopper pillars on the bond pads, wherein the array of light-emitting diodes in the monolithic array comprises contact pads that are bonded to the copper pillars.3. The display system of claim 2 , wherein the driver integrated circuit comprises metal layers that couple the display driver circuitry to the bond pads.4. The display ...

Adjustable Lens and Article of Eyewear

An adjustable fluid-filled lens having a rear surface, a front surface, and a body of fluid between the front and rear surfaces. The lens incorporates a diffractive pattern within the fluid. 1. An adjustable fluid-filled lens comprising:a rear surface;a front surface; anda body of fluid therebetween, wherein the lens incorporates a diffractive pattern within the fluid.2. The adjustable fluid-filled lens as claimed in claim 1 , wherein the diffractive pattern is disposed either at an interface between the lens and the fluid or is supported in the fluid spaced apart from the front and rear surfaces.3. The adjustable fluid-filled lens as claimed in claim 1 ,wherein the front surface comprises an elastic or viscoelastic membrane held around its edge by a supporting member, the membrane being spaced apart from the rear surface, and wherein the pressure of the fluid is adjustable for adjusting the shape of the membrane to thereby vary the power of the lens to focus the first image.4. The adjustable fluid-filled lens as claimed in claim 1 , wherein the lens is operable to focus a first image of an object viewed through the lens in a first region of the lens and wherein the diffractive pattern is operable to focus a second image projected onto the diffractive pattern in an overlapping region of the lens.5. The adjustable fluid-filled lens as claimed in claim 1 , wherein the rear surface is defined by a rear cover on which the diffractive pattern is disposed.6. The adjustable fluid-filled lens as claimed in claim 5 , wherein the supporting member and the rear cover are flexibly joined together around their edges to form a sealed envelope in which the fluid is contained.7. The adjustable fluid-filled lens as claimed in claim 5 , further comprising an envelope in which the fluid is contained claim 5 , one wall of the envelope defining said front surface claim 5 , wherein the rear face comprises another wall of the envelope claim 5 , the wall being fixedly attached to the rear ...

SYSTEMS AND METHODS FOR RAILWAY ASSET MSANAGEMENT

Systems and methods for railway asset management. The methods comprise: using a virtual reality device to recognize and collect real world information about railway assets located in a railyard; and using the real world information to (i) associate a railway asset to a data collection unit, (ii) provide an individual with an augmented reality experience associated with the railyard and/or (iii) facilitate automated railyard management tasks. 1. A method for railway asset management , comprising:capturing an image of the railway asset using a mobile communication device;converting the image into an electronic editable image for the railway asset;communicating the electronic editable image from the mobile communication device to a data collection unit which is installed on the railway asset;communicating first information from the data collection unit to a remote computing device via a first network communication, the first information comprising at least the electronic editable image;comparing the first information to second information to determine whether a match exists therebetween by a given amount; andvalidating that the data collection unit was installed on the railway asset when a match is determined to exist between the first and second information by the given amount.2. The method according to claim 1 , further comprising communicating the second information from the mobile communication device to the remote computing device with a second network communication claim 1 , the second information comprising at least the image.3. The method according to claim 1 , wherein the second information is pre-stored information retrieved from a datastore of a railway asset management system or a datastore of another system.4. The method according to claim 1 , further comprising providing an electronic notification to a user of a computing device that the install was completed successfully claim 1 , when a match is determined to exist between the first and second ...

GAZE DETECTION IN HEAD WORN DISPLAY

Disclosed herein are devices and methods to determine a gaze associated with an eye. At least one infrared beam may be reflected off of the eye. The reflected infrared beam may be received and reflected from a projection surface that includes one or more layers that reflects infrared light. The projection surface may include a holographic optical element (HOE) that reflects the infrared light. The infrared beam reflected from the projection surface may be received by an infrared light beam receiver. A light intensity associated with the reflected infrared beam may be used to control one or more functionality associated with a projection system. 1. An apparatus , comprising:an infrared light beam emitter to emit at least one infrared light beam; andan holographic optical element (HOE) to reflect the at least one infrared light beam toward an eye.2. The apparatus according to claim 1 , wherein the HOE is comprised in or on a projection surface.3. The apparatus according to claim 1 , further comprising a visible light beam emitter to emit at least one visible light beam claim 1 , the HOE to reflect the at least one visible light beam toward an eye.4. The apparatus according to claim 1 , wherein the HOE includes a first layer and a second layer claim 1 , the first layer to reflect infrared light and the second layer to reflect visible light.5. The apparatus according to claim 4 , wherein the first and second layers are situated in a stacked arrangement.6. The apparatus according to claim 4 , wherein the first and second layers are situated in a side-by-side arrangement.7. The apparatus according to claim 4 , wherein the first layer and the second layer are photopolymer material.8. The apparatus according to claim 1 , wherein the HOE includes a first layer claim 1 , the first layer to reflect infrared light and further to reflect visible light.9. The apparatus according to claim 1 , further comprising logic to ascertain gaze information associated with the eye based on a ...

NEAR-TO-EYE DISPLAY DEVICE WITH VARIABLE RESOLUTION

A near-to-eye display device includes a spatial light modulator and a microdisplay. The spatial light modulator provides a high-resolution focused image for central vision. The microdisplay provides a low-resolution defocused image for peripheral vision. The display has a large field of view. 1. A near-to-eye display device comprising:a computer unit;a point light source mounted to the near-to-eye display device;a spatial light modulator (SLM) mounted to the near-to-eye display device and operatively coupled to the computer unit, wherein the near-to-eye display device when in use is less than 25 cm from a user's eye, wherein light produced by the point light source illuminates the SLM and gets modulated by the SLM to produce modulated light, and the modulated light is directed on an exit pupil plane that includes a useful portion, and wherein a light wave distribution within the useful portion includes a computed light distribution from a virtual scene computed by the computer unit; anda microdisplay positioned on the near-to-eye display device to generate on a user's retina a defocused peripheral image that surrounds a focused image generated by the spatial light modulator, wherein the focused region in steerable to different locations on the microdisplay.2. (canceled)3. The near-to-eye display device of claim 1 , wherein the SLM has a first pixel pitch and the microdisplay has a second pixel pitch that is greater than the first pixel pitch.4. The near-to-eye display device of claim 1 , wherein the modulated light is steerable across the exit pupil plane to follow the motion of a user's eye pupil when the near-to-eye display device is in use.5. The near-to-eye display device of claim 1 , wherein the point light source comprises a plurality of light sources to emit light of different wavelengths.6. The near-to-eye display device of claim 5 , wherein the plurality of light sources emit light sequentially.7. The near-to-eye display device of claim 1 , wherein the ...

LENS AND EMBEDDED OPTICAL ELEMENT FOR NEAR EYE DISPLAY

Disclosed herein is a lens for a wearable projection system. The lens includes a holographic optical element embedded within the lens and covering a portion of the viewable area of the lens. The lens can be manufactured by providing a first lens blank, affixing the HOE to a portion of the first lens blank, and forming a second lens blank on the first lens blank to embed the HOE between the lens blanks. 1. A method to manufacture a wearable display lens , comprising:providing a partial lens blank, the partial lens blank comprising a front surface and a back surface;applying a holographic optical element (HOE) to a portion of the back surface of the partial lens blank;placing the partial lens blank and the HOE into a backside mold, the backside mold comprising a cavity, the HOE disposed within the cavity; andfilling the cavity with a lens material to form a backside lens portion on the partial lens blank, wherein the HOE is embedded between the partial lens blank and the backside lens portion.2. The method of claim 1 , the HOE comprising a first area and the back surface of the partial lens blank comprising a second area larger than the first area.3. The method of claim 2 , wherein the first area is between 4 and 12 times smaller than the second area.4. The method of claim 1 , filling the cavity comprising casting the lens material into the cavity.5. The method of claim 1 , filling the cavity comprising injecting the lens material into the cavity.6. The method of claim 1 , comprising applying at least one of heat or light to cure the lens material.7. The method of claim 1 , the partial lens blank comprising at least one registration mark claim 1 , the method comprising aligning the HOE on the back surface of the partial lens blank based on the at least one registration mark.8. The method of claim 1 , comprising shaping the partial lens blank and the backside lens portion to an eyewear lens shape.9. The method of claim 1 , comprising filling a cavity in a frontside ...

LENS RESERVOIR AND EMBEDDED OPTICAL ELEMENT FOR NEAR EYE DISPLAY

Disclosed herein is a lens for a wearable projection system. The lens includes a holographic optical element embedded within the lens and covering a portion of the viewable area of the lens. The lens can be manufactured by filling a cavity in a lens blank with a photosensitive material and exposing the photosensitive material to a number of light beams to form the HOE. 1. A method to manufacture a wearable display lens , comprising:filling a cavity in a lens blank with a photosensitive material; andexposing the first material with at least one light beam to form a holographic optical element (HOE) in the photosensitive material.2. The method of claim 1 , comprising claim 1 , shaping the lens blank to an eyewear lens shape.3. The method of claim 1 , comprising:injecting, via a port in the outside surface of the lens blank, the polymer material into the cavity to fill the cavity; andsealing the port.4. The method of claim 1 , wherein the photosensitive material comprises polymer.5. The method of claim 4 , wherein the photosensitive material comprises MEK-coflouropolymer-monomer.6. The method of claim 1 , comprising:providing the partial lens blank; andemptying the cavity in the partial lens blank.7. The method of claim 6 , emptying the cavity in the partial lens blank comprising removing a filler material from the cavity claim 6 , the filler material to form the cavity during forming of the partial lens blank.8. The method of claim 1 , comprising:providing a first partial lens blank;providing a second partial lens blank, each of the first and second partial lens blank comprising a recess;coupling the first partial lens blank and the second partial lens blank to form the lens blank, the recesses aligned to form the cavity.9. The method of claim 8 , comprising drilling a hole in the first partial lens blank to access the cavity.10. The method of claim 8 , filling the cavity in the lens blank comprising sandwiching the photosensitive material between the first partial ...

HOLOGRAPHIC OPTICAL ELEMENT DESIGN AND MANUFACTURING

Disclosed herein are devices and methods to provide a holographic optical element (HOE) having a modified shape and a structural attribute. At least one wavefront may be used to cause a first structure change in a material, used for the HOE, in a first shape. The material used for the HOE may be changed from the first shape to the modified shape to cause a second structure change in the material. The structural attribute in the material may be provided from a combination of the first structure change and the second structure change. 1. A method to manufacture a holographic optical element (HOE) , the method comprising:impinging at least one wavefront on a material having a first shape, the at least one wavefront to cause a first structure change in the material;shaping the material to a second shape to cause a second structure change in the material; andforming a holographic optical element (HOE), the HOE comprising the material having the second shape and a structural attribute, the structural attribute based in part on a combination of the first structure change and the second structure change.2. The method to manufacture the HOE according to claim 1 , further comprising impinging a plurality of wavefronts on the material having the first shape to cause the first structure change in the material.3. The method to manufacture the HOE according to claim 1 , further comprising forming the HOE having the second shape and the structural attribute to conform to a defined design.4. The method to manufacture the HOE according to claim 1 , wherein the material is a photopolymer claim 1 , emulsion material claim 1 , crystal claim 1 , or photoresist-based material.5. A holographic optical element (HOE) manufactured by the method of .6. The method to manufacture the HOE according to claim 1 , wherein the first shape of the material is flat claim 1 , the second shape of the material is curved claim 1 , and the structural attribute is a nano structure of the material.7. The ...

SEALED EDGE LENS FOR NEAR EYE DISPLAY

Disclosed herein is a lens for a wearable projection system. The lens includes a holographic optical element disposed between layers of the lens. Joints between the holographic optical element and the lens layers on an edge of the lens are covered with a sealant to protect the holographic optical element. 1. A method to manufacture a wearable display lens , comprising:providing a lens having a holographic optical element (HOE) disposed between a first layer and a second layer of the lens, the HOE exposed along an edge of the lens;shaping the lens; andapplying a sealant to the edge of the lens to cover the HOE.2. The method of claim 1 , shaping the lens comprising at least one of cutting the lens claim 1 , grinding the lens claim 1 , or polishing the lens.3. The method of claim 1 , shaping the lens comprising at least one of cutting the edge of the lens claim 1 , grinding the edge of the lens claim 1 , or polishing the edge of the lens.4. The method of claim 1 , applying the sealant to the edge of the lens comprising rolling the sealant onto the edge.5. The method of claim 1 , applying the sealant to the edge of the lens comprising dipping the edge of the lens in the sealant.6. The method of claim 1 , providing the lens comprising:providing the first layer and the second layer;applying the HOE to a back surface of the first layer; andapplying the second layer to the HOE to place the HOE between the first and the second layer.7. The method of claim 6 , wherein the HOE is applied to the back surface of the first layer with a pressure sensitive adhesive.8. The method of claim 1 , providing the lens comprising:providing the first layer;applying the HOE to a back surface of the first layer;placing the first layer and the HOE into a mold; andfilling the mold with a lens material to form the second layer the HOE.9. The method of claim 8 , providing the first layer comprising filling the mold with the lens material to form the first layer.10. The method of claim 8 , filling ...

Near-to-eye display device with spatial light modulator and pupil tracker

A near-to-eye display device includes a spatial light modulator, a rotatable reflective optical element and a pupil-tracking device. The pupil-tracking device tracks the eye pupil position of the user. Based on the data provided by the pupil-tracking device, the reflective optical element is rotated such that the light modulated by the spatial light modulator is directed towards the user's eye pupil.

WIDE FIELD OF VIEW HYBRID HOLOGRAPHIC DISPLAY

A display for displaying a wide Field of View (FoV) scene including a holographic image within the scene, including a first Spatial Light Modulator (SLM) and an optical system for producing a first holographic image at a center of a displayed scene, and a second image display for producing at least a first additional image adjacent to the first holographic image. In some embodiments an augmented reality display is used for the displaying of the first holographic image at the center of a field of view and the second image adjacent to the first holographic image. In some embodiments a virtual reality display is used for the displaying of the first holographic image near the center of a field of view and the second image adjacent to the first holographic image. Related apparatus and methods are also described. 1. A system for displaying a wide Field of View (FoV) scene including a three-dimensional image within the scene , comprising:a head mounted display (HMD) comprising:a first display for producing a first, three-dimensional (3D) portion of a scene;an optical system for imaging the first 3D image toward a center of a viewer's field-of-view (FOV);a second display for producing a different resolution second image of a second portion of the scene next to the first 3D image; andwherein the optical system is arranged to allow the viewer a real view of the real world through the optical system,thereby combining a view of the first 3D image, the second image and the real world.2. The system of claim 1 , and further comprising a viewer pupil tracking component for tracking the viewer's pupil and wherein the viewer pupil tracking component provides data for controlling the first display and the optical system for displaying the first 3D image to the center of the viewer's FOV.3. The system of claim 1 , in which the second display comprises a lower spatial resolution display than the first display.4. The system of claim 1 , in which the second display comprises a display for ...

HOLOGRAPHIC SUPERIMPOSITION OF REAL WORLD PLENOPTIC OPACITY MODULATION THROUGH TRANSPARENT WAVEGUIDE ARRAYS FOR LIGHT FIELD, VIRTUAL AND AUGMENTED REALITY

Disclosed are transparent energy relay waveguide systems for the superimposition of holographic opacity modulation states for holographic, light field, virtual, augmented and mixed reality applications. The light field system may comprise one or more energy waveguide relay systems with one or more energy modulation elements, each energy modulation element configured to modulate energy passing therethrough, whereby the energy passing therethrough may be directed according to 4D plenoptic functions or inverses thereof. 1. A system comprising:a first energy waveguide relay system configured such that energy passing therethrough is directed according to a first 4D plenoptic function;a second energy waveguide relay system following the first energy waveguide relay system, the second energy waveguide relay system configured such that energy passing therethrough is directed according to a second 4D plenoptic function, the second 4D plenoptic function inverse of the first 4D plenoptic function; anda first energy modulation element disposed in a first location in the first energy waveguide relay system, in a second location in the second energy waveguide relay system or in a third location in between the first energy waveguide relay system and the second energy waveguide relay system, the first energy modulation element configured to modulate energy passing therethrough.2. The system of claim 1 , wherein the first energy waveguide relay system includes a first array of energy waveguides configured to direct energy therethrough along a plurality of energy propagation paths claim 1 , wherein the energy waveguides of the first array are located at different spatial coordinates claim 1 , and each energy waveguide directs energy from the respective spatial coordinate to the plurality of energy propagation paths along different directions according to the first 4D plenoptic function.3. The system of claim 1 , wherein the second energy waveguide relay system includes a second array ...

EXIT PUPIL EXPANDING DIFFRACTIVE OPTICAL WAVEGUIDING DEVICE

An optical device is disclosed for expanding input light in two dimensions in an augmented reality display. The device comprises a waveguide () and three linear diffraction grat-ings H H H An incident beam from a projector illuminates an input grating H with polychromatic light, and the light is coupled into the waveguide (). The other two gratings H H are overlaid on top of one another. Light can be diffracted by one grating H into a first diffracted order and towards the other grating H which can couple the light out of the waveguide () towards a viewer. In another arrangement the crossed gratings H H may be replaced by a photonic crystal () having a regular array of pillars () which create a number effective diffraction gratings. 1. An optical device for expanding input light in two dimensions in an augmented reality display , comprising:a waveguide;an input diffractive optical element configured to couple input light into the waveguide; andtwo diffractive optical elements entirely overlaid on one another in or on the waveguide, wherein each of the two diffractive optical elements is configured to receive light from the input diffractive optical element and couple it towards the other diffractive optical element which can then act as an output diffractive optical element providing outcoupled orders towards a viewer.2. The optical device of wherein each diffractive optical element comprises grooves and a grating vector in the plane of the grooves claim 1 , having a direction that is normal to the grooves and a magnitude which is inversely related to the pitch of the grooves claim 1 , wherein the input and output diffractive optical elements respectively have grating vectors with a substantially equal magnitude.3. The optical device of wherein a combination of the respective grating vectors of the input diffractive optical element and the two diffractive optical elements is a resultant vector with substantially zero magnitude.4. The optical device of wherein the ...

SYSTEMS, DEVICES, AND METHODS THAT INTEGRATE EYE TRACKING AND SCANNING LASER PROJECTION IN WEARABLE HEADS-UP DISPLAYS

Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays are described. At least one narrow waveband laser diode is used in an SLP to define one or more portion(s) of a visible image. At least one corresponding narrow waveband photodetector is aligned to detect reflections of the portion(s) of the image from features of the eye. A holographic optical element (“HOE”) may be used to combine the image and environmental light into the user's “field of view.” Three narrow waveband photodetectors each responsive to a respective one of three narrow wavebands output by the RGB laser diodes of an RGB SLP are aligned to detect reflections of a projected RGB image from features of the eye. 1. A wearable heads-up display (“WHUD”) comprising:a first visible light source to output a first visible light in a first narrow waveband, the first visible light representative of at least a first portion of a displayed image;a second visible light source to output a second visible light in a second narrow waveband different from the first narrow waveband, the second visible light representative of at least a second portion of a displayed image;a transparent combiner aligned to receive the first visible light from the first light source and the second visible light from the second visible light source and to redirect both the first visible light and the second visible light towards at least one eye of a user;a first narrow waveband detector aligned to receive at least a portion of the first visible light reflected from the at least one eye of the user, wherein the first narrow waveband detector is responsive to the first visible light in the first narrow waveband and unresponsive to light that is outside of the first narrow waveband; anda second narrow waveband detector aligned to receive at least a portion of the second visible light reflected from the at least one eye of the user, wherein the second narrow ...

SYSTEMS, DEVICES, AND METHODS THAT INTEGRATE EYE TRACKING AND SCANNING LASER PROJECTION IN WEARABLE HEADS-UP DISPLAYS

Systems, devices, and methods that integrate eye tracking capability into scanning laser projector (“SLP”)-based wearable heads-up displays are described. An infrared laser diode is added to an RGB SLP and an infrared photodetector is aligned to detect reflections of the infrared light from features of the eye. A holographic optical element (“HOE”) may be used to combine visible light, infrared light, and environmental light into the user's “field of view.” The HOE may be heterogeneous and multiplexed to apply positive optical power to the visible light and zero or negative optical power to the infrared light. 1. A wearable heads-up display (“WHUD”) comprising:an infrared light source to output an infrared light;a visible light source to output a visible light; receive the infrared light from the infrared light source;', 'receive the visible light from the visible light source;', 'transmit the infrared light therethrough without influencing the infrared light; and', 'separate the visible light into angle-separated copies;, 'an optical splitter aligned toa transparent combiner, the transparent combiner aligned to receive both the infrared light and the angle-separated copies of the visible light from the optical splitter and to redirect both the infrared light and the angle-separated copies of the visible light towards at least one eye of a user; andan infrared detector aligned to receive at least a portion of infrared light reflected from the at least one eye of the user.2. The WHUD of wherein:the infrared light source comprises an infrared laser diode to output infrared laser light; andthe visible light source comprises at least one visible laser light diode to output visible laser light.3. The WHUD of wherein the at least one visible laser light diode includes at least one visible laser light diode selected from the group consisting of: a red laser diode claim 2 , a green laser diode claim 2 , a blue laser diode claim 2 , and any combination of a red laser diode ...

DISPLAY DEVICE

A display device of the present disclosure includes, along an optical path of imaging light emitted from an imaging light generation device, a first optical portion having a positive power, a second optical portion including a first diffraction element and having a positive power, a third optical portion having a positive power, and a fourth optical portion including a second diffraction element and having a positive power. In the optical path, the first diffraction element and the second diffraction element diffract the imaging light at least along a primary diffraction plane and a secondary diffraction plane orthogonal to the primary diffraction plane, and a deflection force of the imaging light in the primary diffraction plane is greater than a deflection force of the imaging light in the secondary diffraction plane. 2. The display device according to claim 1 , whereinin the second diffraction element, a diffraction angle of the imaging light in view of the first direction is greater than a diffraction angle of the imaging light in view of the second direction different from the first direction.3. The display device according to claim 2 , further comprisinga second optical element that emits the imaging light from the first diffraction element toward the second diffraction element, whereinin the second optical element, a positive power with respect to the imaging light in the first direction is greater than a positive power with respect to the imaging light in the second direction.4. The display device according to claim 1 , further comprisinga second reflection element that reflects the imaging light from the first optical element toward the first diffraction element, whereinthe second reflection element is disposed between a first intermediate image and the first optical element on an optical path,the first reflection element is disposed between a second intermediate image and the second optical element on the optical path. This is a Continuation of application ...

FOVEATION AND SPATIAL HASHING IN LAYER-BASED COMPUTER-GENERATED HOLOGRAMS

The computational scaling challenges of holographic displays are mitigated by techniques for generating holograms that introduce foveation into a wave front recording planes approach to hologram generation. Spatial hashing is applied to organize the points or polygons of a display object into keys and values. 1. A non-transitory computer-readable storage medium , the computer-readable storage medium including instructions that when executed by a computer , cause the computer to:generate a plurality of wave front recording planes;apply spatial hashing to a summation of at least one field contribution propagated from points of a display object to each of the wave front recording planes; andseparately propagate a foveal component and a peripheral component of the wave front recording planes to a foveated hologram.2. The computer-readable storage medium of claim 1 , wherein the display object is a polygonal object.3. The computer-readable storage medium of claim 1 , wherein the display object is a point cloud.4. The computer-readable storage medium of claim 3 , wherein the instructions further configure the computer to:in a first pass, apply a first graphics processing unit kernel to iterate through the points in the point cloud and determining a set of key value pairs for pixels of the wave front recording planes.5. The computer-readable storage medium of claim 4 , wherein the array is hashed into a hash table.6. The computer-readable storage medium of claim 4 , wherein the instructions further configure the computer to:in a second pass, apply a second graphics processing unit kernel to iterate through the pixels to generate contributions from the field.7. A computing apparatus claim 4 , the computing apparatus comprising:a processor; and apply a wave front recording plane to one or more objects in a scene to be rendered on a holographic display; and', 'apply spatial hashing to transform the objects into key value pairs where a key defines an individual position on the ...

OPTICAL DEVICE AND VIRTUAL IMAGE DISPLAY

An optical device includes: a light guide plate receiving, for each of N types of wavelength bands, a plurality of parallel light beams with different incident angles each corresponding to view angles, and guiding the received parallel light beams; a first and a second volume hologram gratings of reflection type having a diffraction configuration which includes N types of interference fringes each corresponding to the N types of wavelength bands, and diffracting/reflecting the parallel light beams. The optical device satisfies for each wavelength band, a relationship of ‘P>L’, where ‘L’ represents a central diffraction wavelength in the first and second volume hologram gratings, defined for a parallel light beam corresponding to a central view angle, and ‘P’ represents a peak wavelength of the parallel light beams. 1. An optical device comprising:a light source;a light guide plate configured to receive light, and to guide the received light;a first deflecting element configured to deflect light entering the light guide plate; anda second deflecting element configured to deflect light which has been propagated through the light guide plate,wherein a peak wavelength of the light source is closer to a central diffraction wavelength of the light with the first view angle +θ than to a central diffraction wavelength of the light with the second view angle −θ, θ being an angle relative to a normal to a surface of the light guide plate, andwherein a first deflected light by the first deflecting element corresponds to the first view angle +θ and a second deflected light by the first deflecting element corresponds to the second view angle −θ, and a first portion of the second deflecting element where the first deflected light is deflected is located farther away from the first deflecting element than a second portion of the second deflecting element where the second deflected light is deflected.2. The optical device of claim 1 , wherein the light source and the first and ...

HEAD-MOUNTED DISPLAY APPARATUS

A head-mounted display apparatus includes a display unit including a plurality of emissive areas which displays images and a plurality of transmissive areas disposed between the emissive areas and which transmits light from external light sources, a first optical element which receives and converges light emitted from the display unit onto a predetermined area, and a second optical element disposed opposite to the first optical element with respect to the display unit and which receives and diverges light incident toward the display unit from an outside. 1. A head-mounted display apparatus comprising: a plurality of emissive areas which displays images; and', 'a plurality of transmissive areas disposed between the emissive areas and which transmits external light;, 'a display unit comprisinga first optical element which receives light from the display unit, wherein the first optical element converts light emitted from the emissive areas into polarized light in a first direction, and converts the external light transmitted through the transmissive areas into polarized light in a second direction; anda second optical element which receives light from the first optical element, wherein the second optical element converges the polarized light in the first direction onto a predetermined area, and transmits the polarized light in the second direction in substantially the same direction as an incident direction thereof on the second optical element.2. The head-mounted display apparatus of claim 1 , wherein the first optical element comprises:a polarizer disposed to correspond to the emissive areas and the transmissive areas; and a first liquid crystal disposed to correspond to the emissive areas; and', 'a second liquid crystal disposed to correspond to the transmissive areas., 'a liquid crystal layer which receives light transmitted through the polarizer and comprising3. The head-mounted display apparatus of claim 1 , wherein the second optical element comprises:a first ...

SYSTEM AND METHODS OF UNIVERSAL PARAMETERIZATION OF HOLOGRAPHIC SENSORY DATA GENERATION, MANIPULATION AND TRANSPORT

A method determines four dimensional (4D) plenoptic coordinates for content data by receiving content data; determining locations of data points with respect to a first surface to creating a digital volumetric representation of the content data, the first surface being a reference surface; determining 4D plenoptic coordinates of the data points at a second surface by tracing the locations the data points in the volumetric representation to the second surface where a 4D function is applied; and determining energy source location values for 4D plenoptic coordinates that have a first point of convergence. 1. A method of determining four dimensional (4D) plenoptic coordinates for content data , the method comprising:receiving content data;determining locations of data points with respect to a first surface to create a digital volumetric representation of the content data, the first surface being a reference surface;determining 4D plenoptic coordinates of the data points at a second surface by tracing the locations the data points in the volumetric representation to the second surface where a 4D function is applied; anddetermining energy source location values for 4D plenoptic coordinates that have a first point of convergence.2. The method of claim 1 , wherein the content data comprises a signal perceptible by a visual claim 1 , audio claim 1 , textural claim 1 , sensational claim 1 , or smell sensor.3. The method of claim 1 , wherein the content data comprises at least one of the following: an object location claim 1 , a material property claim 1 , a virtual light source claim 1 , content for geometry at non-object location claim 1 , content out of the reference surface claim 1 , a virtual camera position claim 1 , a segmentation of objects claim 1 , and layered contents.4. The method of claim 1 , wherein the content data comprises data points in a two dimensional (2D) space claim 1 , and wherein determining locations comprises applying a depth map to the data points ...

Method and system for facilitating provisioning of holographic content

Disclosed is a wearable display device configured to facilitate provisioning of holographic content in cooperation with at least one computing device. The wearable display device may include at least one sensor configured to detect sensor data corresponding to one or more of a location and an orientation of the wearable display device. Further, the wearable display device may include a communication interface configured to transmit the sensor data to the at least one computing device. Further, the communication interface may be configured to receive holographic projection content from the at least one computing device. Further, the wearable display device may include a processor communicatively coupled to the communication interface. Further, the processor may be configured to process the holographic projection content. Further, the wearable display device may include a display device configured to generate a visual display of the holographic projection content.

IMAGE DISPLAY DEVICE AND DISPLAY DEVICE

An image display device 10 includes an optical splitter to which an image emitted from an image forming device placed in an outside (outside of the image display device ) is injected and that is configured to divide the image into a plurality of images, and a light collecting element configured to collect, on a pupil of a viewer a plurality of images divided by the optical splitter and emitted from the optical splitter and if a focal distance of the light collecting element is denoted by F(unit: mm) and an optical distance from the optical splitter 11 to the light collecting element is by L(unit: mm), L=F±10 is satisfied. 1. An image display device comprising:an optical splitter to which an image emitted from an image forming device placed in an outside is injected and that is configured to divide the image into a plurality of images; anda light collecting element configured to collect, on a pupil of a viewer, a plurality of images divided by the optical splitter and emitted from the optical splitter,{'sub': 0', '0, 'claim-text': {'br': None, 'i': L', '=F, 'sub': 0', '0, '±10'}, 'wherein, if a focal distance of the light collecting element is denoted by F(unit: mm) and an optical distance from the optical splitter to the light collecting element is by L(unit: mm),'}is satisfied.2. An image display device comprising:an optical splitter to which an image emitted from an image forming device placed in an outside is injected and that is configured to divide the image into a plurality of images; anda light collecting element configured to collect, on a pupil of a viewer, a plurality of images divided by the optical splitter and emitted from the optical splitter,wherein, if an extension line of a center line of the pupil is taken as a Z-axis, a straight line connecting turning centers of left and right eyeballs is as an X-axis, and an axis orthogonal to the X-axis and the Z-axis and is as a Y-axis, the optical splitter and the light collecting element are provided in an ...

Holographic head-up display device

A holographic head-up display device includes: a light source portion that emits coherent light; an optical modulation portion that modulates the coherent light; a relay optical system that focuses the modulated light; a filter mirror that includes a reflection area disposed at a focal position of the relay optical system and reflecting light incident through the relay optical system and an absorption area disposed at the periphery of the reflection area and absorbing light incident through the relay optical system; and a transflective mirror that partially transmits and partially reflects light reflected by the filter mirror.

APODIZED OPTICAL ELEMENTS FOR OPTICAL ARTIFACT REDUCTION

Techniques disclosed herein relate to a near-eye display system. One example of an optical device of a near-eye display includes a substrate and holographic grating conformally coupled to a surface of the substrate. The substrate is transparent to visible light and infrared light and is configured to be placed in front of an eye of a user of the near-eye display. A refractive index modulation of the holographic grating is apodized in a surface-normal direction of the substrate to reduce optical artifacts in the visible light. 1. An optical device for a near-eye display , the optical device comprising:a substrate transparent to visible light and infrared light and configured to be placed in front of an eye of a user of the near-eye display; anda holographic grating conformally coupled to a surface of the substrate, wherein a refractive index modulation of the holographic grating is apodized in a surface-normal direction of the substrate to reduce optical artifacts in the visible light.2. The optical device of claim 1 , wherein a magnitude of the refractive index modulation of the holographic grating in the surface-normal direction of the substrate is characterized by a bell-shaped curve.3. The optical device of claim 1 , wherein a magnitude of the refractive index modulation of the holographic grating is asymmetrical in the surface-normal direction of the substrate.4. The optical device of claim 1 , wherein the holographic grating includes a reflective holographic grating configured to transmit the visible light and reflectively diffract infrared light in a first wavelength range for eye tracking.5. The optical device of claim 4 , wherein the holographic grating is configured to reflectively diffract the infrared light in the first wavelength range from an infrared light source to the eye of the user or from the eye of the user to an infrared camera.6. The optical device of claim 1 , wherein:the substrate is configured to guide display light within the substrate ...

WAVEGUIDE-BASED ILLUMINATION FOR HEAD MOUNTED DISPLAY SYSTEM

A head-mounted display system is configured to project light to an eye of a user wearing the head-mounted display system to display content in a vision field of said user. The head-mounted display system comprises at least one diffusive optical element, at least one out-coupling optical element, at least one mask comprising at least one mask opening, at least one illumination in-coupling optical element configured to in-couple light from at least one illumination source into a light-guiding component, an image projector configured to in-couple an image and an at least one illumination source is configured to in-couple light into at least one illumination in-coupling optical element, an eyepiece, a curved light-guiding component, a light-guiding component comprising a portion of a frame, and/or two light-guiding components disposed on opposite sides of at least one out-coupling optical element. 1. A head-mounted display system configured to project light to an eye of a user wearing the head-mounted display system to display content in a vision field of said user , said head-mounted display system comprising:a frame configured to be supported on a head of the user;an image projector configured to project an image;at least one illumination source;a light-guiding component, said light-guiding component configured so as to be positioned forward one of the user's eyes when the frame is worn by the user;at least one illumination in-coupling optical element configured to in-couple light from the at least one illumination source into the light-guiding component so as to guide light from the at least one illumination source therein; andat least one diffusive optical element disposed on the light-guiding component so as to be positioned forward one of the user's eyes when the frame is worn by the user, wherein the at least one diffusive optical element is configured to diffusively couple light from the at least one illumination source out of the light-guiding component.2. The ...

DISPLAY SYSTEM WITH VIDEO SEE-THROUGH

A display system with video see-through eye display unit is disclosed. The eye display unit includes: at least one camera unit; at least one image forming module; and an optical deflection module including at least one double sided light reflecting optical element which is at least partially reflecting to light arriving from both sides thereof. The camera unit is configured for collecting light arriving from a region of interest of a scene along a first optical path intersecting the optical deflection module, and generating image data indicative of the region of interest. The image forming module is configured for receiving imagery data indicative of images to be projected to an eye of a user, and generating and projecting the received images to propagate along a second optical path intersecting the optical deflection module. The double sided light reflecting optical element of the optical deflection module is arranged in the display system to be located in front of the eye while intersecting the first and second optical paths, and is oriented to define the first optical path (between the camera unit and the scene) and the second optical path (between the image forming unit and the eye), such that the camera unit has a point of view substantially similar to line of sight of the eye. 118-. (canceled)19. A system , comprising: at least one camera unit configured for collecting light arriving along a first optical path from a region of interest of a scene and generating image data indicative thereof;', 'at least one image forming module configured for receiving imagery data and projecting images of said imagery data along a second optical path towards an eye of a user; and', "an optical deflection module comprising at least one double sided light reflecting optical element being reflecting to light arriving from both sides thereof and having at least one side being at least 95% reflective, the double sided light reflecting optical element being located in front of said ...

FIELD OF VIEW ENHANCEMENT

An optical reflective device for reflecting light including a grating medium having a first and second grating structure is disclosed. The first grating structure may be configured to reflect light of a wavelength about a first reflective axis offset from a surface normal of the grating medium at a first incidence angle. The second grating structure may be configured to reflect light of the wavelength about a second reflective axis offset from the surface normal of the grating medium at a second incidence angle different from the first incidence angle. The second reflective axis may be different from the first reflective axis. 1. A head mounted display device , comprising:a pre-distortion manager configured to produce a pre-distorted image by applying a pre-distortion to a set of pixels in an undistorted image, the set of pixels being proximal to an edge of a field of view of the undistorted image;a light source configured to generate image-bearing light that includes the pre-distorted image; andan optical system that includes a lens configured to receive the image-bearing light from the light source, wherein the lens is configured to direct the image-bearing light while producing a distortion in the image-bearing light, and wherein the pre-distortion is configured to compensate for the distortion produced by the lens in directing the image-bearing light.2. The head mounted display device defined in claim 1 , wherein the optical system comprises a waveguide and a holographic grating medium in the waveguide.3. The head mounted display device defined in claim 2 , wherein the optical system further comprises a set of volume holograms in the holographic grating medium claim 2 , the set of volume holograms being configured to diffract the image-bearing light.4. The head mounted display device defined in claim 3 , wherein the set of volume holograms comprise an input coupler.5. The head mounted display device defined in claim 4 , wherein the set of volume holograms ...

WAVEGUIDE-BASED PROJECTOR

A projector includes an illumination waveguide layer, a collimation waveguide layer, and a spatial modulator. The illumination waveguide layer expands a light beam which is coupled to the spatial modulator. The spatial modulator modulates the expanded light beam to provide a line of light points of controllable brightness. The collimation waveguide collimates light of the light points to obtain a fan of collimated light beams. Each collimated light beam of the fan has an angle corresponding to a coordinate of the corresponding light point of the line. A tiltable reflector may be placed at the exit pupil to scan the fan of light beams in a plane non-parallel to the plane of the fan, thus providing a 2D image in angular domain. An array of Mach-Zehnder interferometers may be used in place of the illumination waveguide layer and the spatial modulator to provide the line of light points. 1. A projector comprising:an illumination waveguide layer comprising a first input port for receiving a first light beam, a slab waveguide portion optically coupled to the first input port for expanding the first light beam, and an output surface for outputting the first light beam expanded in the slab waveguide portion;a spatial modulator optically coupled to the output surface of the illumination waveguide layer for spatially modulating the expanded first light beam to provide a line of light points; anda collimation waveguide layer optically coupled to the spatial modulator for receiving and collimating light of the light points to obtain a fan of collimated light beams at an exit pupil of the collimation waveguide layer, each collimated light beam of the fan having an angle corresponding to a coordinate of the corresponding light point of the line.2. The projector of claim 1 , wherein the slab waveguide portion of the illumination waveguide layer comprises a curved reflector for collimating the first light beam in a plane of the slab waveguide portion.3. The projector of claim 1 , ...

HOLOGRAPHIC OPTICAL ELEMENTS FOR AUGMENTED REALITY DEVICES AND METHODS OF MANUFACTURING AND USING THE SAME

Holographic optical elements for augmented reality (AR) devices and methods of manufacturing and using the same are disclosed. A disclosed system includes a holographic optical element (HOE), and a first light source to direct a first beam of light toward the HOE from a first direction. The first beam of light is collimated. The disclosed system further includes a second light source to direct a second beam of light toward the HOE from a second direction. The disclosed system also includes a decollimation lens positioned between the first light source and the HOE. The decollimation lens is to decollimate the first beam of light. 1. A system comprising:a holographic optical element (HOE);a first light source to direct a first beam of light toward the HOE from a first direction, the first beam of light being collimated;a second light source to direct a second beam of light toward the HOE from a second direction; anda decollimation lens positioned between the first light source and the HOE, the decollimation lens to decollimate the first beam of light.2. The system as defined in claim 1 , wherein a focal length of the decollimation lens defines a focal point for chief rays of sub-images to be reflected off the HOE from a projector.3. The system as defined in claim 2 , wherein the decollimation lens is a diverging lens claim 2 , the diverging lens positioned between the focal point for the chief rays and the HOE.4. The system as defined in claim 3 , wherein the second beam of light is to converge towards a second focal point claim 3 , the second focal point defining a location for the projector.5. The system as defined in claim 2 , wherein the decollimation lens is a converging lens claim 2 , the HOE positioned between the focal point for the chief rays and the converging lens.6. The system as defined in claim 5 , wherein the second beam of light is to diverge outward from a second focal point claim 5 , the second focal point defining a location for the projector.7. The ...

IMAGE DISPLAY DEVICE

An image display device is used by being mounted on an observer, and includes: a frame section that includes a front section and a temple section; a modulated light generation section, a scan section that is arranged in the temple section and scans the modulated light which is emitted from the modulated light generation section; a deflection section that is arranged in the front section and deflects the modulated light which is scanned by the scan section toward the eye of the observer; and a detection section that detects the modulated light which is reflected in the deflection section. 1. An image display device , which is used by being mounted on an observer , comprising:a frame section that includes a front section and a temple section which is connected to the front section;a scan section that is arranged in the temple section, and is configured to scan light which is emitted from a light source;a deflection section that is arranged in the front section, and is configured to deflect light, which is scanned by the scan section, of the light which is emitted from the light source toward the eyes of the observer; anda detection section that detects light, which is reflected in the deflection section, of the light which is scanned by the scan section.2. The image display device according to claim 1 ,wherein the deflection section is a hologram element, andwherein the detection section detects light, which is regularly reflected by the hologram element, of light which is incident into the hologram element.3. An image display device claim 1 , which is used by being mounted on an observer claim 1 , comprising:a frame section that includes a front section and a temple section which is connected to the front section;a scan section that is arranged in the temple section, and is configured to scan light which is emitted from a light source;a deflection section that is arranged in the front section, and is configured to deflect light, which is scanned by the scan section, ...

TRANSPARENT SOUND DAMPENING PROJECTION SCREEN

The invention generally provides a transparent projection screen material with sound dampening properties and methods for using a screen to manipulate light and sound. Methods and materials of the invention can improve live sound and sound recordings by inhibiting ambient sound from reaching listeners or microphones and reducing feedback. 1. An audiovisual display system comprising:a translucent mesh screen defining an obverse surface and a reverse surface, the mesh comprising synthetic fibers having a maximum cross-sectional dimension of about 100 microns;a projector positioned to project an image onto the obverse surface;an object disposed proximal to the reverse surface and visible through the screen to a person viewing the obverse surface; anda speaker configured to transmit a sound wave towards the reverse surface.2. The audiovisual display system of claim 1 , further comprising a microphone and further wherein the obverse surface faces the microphone.3. The audiovisual display system of claim 1 , wherein the synthetic fibers have a maximum cross-sectional dimension of about 20 microns.4. The audiovisual display system of claim 1 , wherein parallel ones of the synthetic fibers are spaced away from one another by a minimum spacing distance that is about 50 microns.5. The audiovisual display system of claim 4 , wherein the minimum spacing distance is about 100 microns.6. The audiovisual display system of claim 5 , wherein the minimum spacing distance is about 450 microns.7. The audiovisual display system of claim 3 , wherein some of the synthetic fibers are substantially perpendicular to others of the synthetic fibers.8. The audiovisual display system of claim 1 , wherein the obverse surface comprises a gray color.9. The audiovisual display system of claim 3 , wherein the synthetic fibers are acrylic.10. A mesh screen for projecting an image claim 3 , the mesh screen comprising:a warp set of synthetic fibers, the warp set comprising a plurality of synthetic ...

Methods, devices, and systems for illuminating spatial light modulators

An optical device comprising may include a light turning element. The optical device can include a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface. The optical device may include a light module that includes a plurality of light emitters. The light module can be configured to combine light for the plurality of emitters. The optical device can further include a light input surface that is between the first and the second surfaces and is disposed with respect to the light module to receive light emitted from the plurality of emitters. The optical device may include an end reflector that is disposed on a side opposite the light input surface. The light coupled into the light turning element may be reflected by the end reflector and/or reflected from the second surface towards the first surface.

LIGHT GUIDE PLATE AND IMAGE DISPLAY DEVICE

Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm. 1. A light guide plate for an image display device which guides image light inputted from an image display element and outputs the image light toward a user's pupil , wherein ,the light guide plate is made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, andthe light guide plate has internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.2. The light guide plate of claim 1 , wherein the light guide plate has a first surface and a second surface that face each other claim 1 , and parallelism of the first surface and the second surface is 20 arc seconds or less.3. The light guide plate of claim 2 , wherein a difference between a maximum value and a minimum value of a distance from the first surface to the second surface is 5 μm or less.465. The light guide plate of claim 1 , wherein when transmitted light of a standard light source D when the plate thickness is 10 mm is represented by an x-y chromaticity diagram claim 1 , chromaticity of x is 0.31 to 0.34 claim 1 , and chromaticity of y is 0.33 to 0.36.5. The light guide plate of claim 1 , wherein the plate thickness is 0.5 to 1.0 mm.6. An image display device comprising:a light source which outputs illumination light;an image display element which receives the illumination light from the light source and outputs ...

OPTICAL APPARATUS

Optical apparatuses used for so-called immersive virtual reality (VR), as it is, can not be used for augmented reality (AR) that overlays external light and images. An optical apparatus to overlay image light on external light and guide resultant light in a downstream side, including: an image optical system including an optical element having lens power with respect to at least the image light; and a reflecting element to overlay, by reflecting at least part of the image light, the at least part of the image light and the at least part of the external light, wherein the image optical system has a GPH element having inverse dispersibility that is inverse to the wavelength dispersibility of the optical element. 1. An optical apparatus to overlay image light on external light and guide resultant light in a downstream side , the optical apparatus comprising:an image optical system including an optical element having lens power with respect to at least the image light; anda reflecting element to overlay, by reflecting at least part of the image light, the at least part of the image light and the at least part of the external light, whereinthe image optical system has a GPH element having inverse dispersibility that is inverse to wavelength dispersibility of the optical element.2. The optical apparatus according to claim 1 , whereinthe optical element has a reflection type optical system which is provided in a downstream side of the reflecting element and configured of a plurality of optical members that fit each other on a fitting surface and refractive indexes of the plurality of optical members coincide each other within a predetermined range, the reflection type optical system having a curved surface to transmit part of entering light and reflect other part of the entering light, and 'a ¼-wavelength plate that is provided in a downstream side of the reflection type optical system; and', 'the optical apparatus further comprisesa reflection type polarizing plate that ...

Dynamic calibration systems and methods for wearable heads-up displays

Systems, methods and articles that provide dynamic calibration of eye tracking systems for wearable heads-up displays (WHUDs). The eye tracking system may determine a user's gaze location on a display of the WHUD utilizing a calibration point model that includes a plurality of calibration points. During regular use of the WHUD by the user, the calibration point model may be dynamically updated based on the user's interaction with user interface (UI) elements presented on the display. The UI elements may be specifically designed (e.g., shaped, positioned, displaced) to provide in-use and on-going dynamic calibration of the eye tracking system, which in at least some implementations may be unnoticeable to the user.

DYNAMIC CALIBRATION SYSTEMS AND METHODS FOR WEARABLE HEADS-UP DISPLAYS

Systems, methods and articles that provide dynamic calibration of eye tracking systems for wearable heads-up displays (WHUDs). The eye tracking system may determine a user's gaze location on a display of the WHUD utilizing a calibration point model that includes a plurality of calibration points. During regular use of the WHUD by the user, the calibration point model may be dynamically updated based on the user's interaction with user interface (UI) elements presented on the display. The UI elements may be specifically designed (e.g., shaped, positioned, displaced) to provide in-use and on-going dynamic calibration of the eye tracking system, which in at least some implementations may be unnoticeable to the user. 1. A method of operating a wearable heads-up display device (WHUD) comprising a display and a glint detection module , the method comprising: a glint space point in a glint space captured by the glint detection module, the glint space point representative of a position of an eye of a user of the WHUD; and', 'a display space point in a display space of the display, the display space point representative of a location on the display at which a gaze of the user is inferred to be resting when the glint space point is captured by the glint detection module;, 'obtaining, by at least one processor, one or more calibration point models each comprising a plurality of calibration points, each calibration point comprisinggenerating, by the at least one processor, a transform from the glint space to the display space for each of the one or more calibration point models;determining, by the at least one processor, user gaze location in the display space using received glint information and the generated transform; generating, by the at least one processor, at least one additional calibration point;', 'adding, by the at least one processor, the additional calibration point to at least one of the calibration point models to generate one or more child calibration point ...

DYNAMIC CALIBRATION SYSTEMS AND METHODS FOR WEARABLE HEADS-UP DISPLAYS

Systems, methods and articles that provide dynamic calibration of eye tracking systems for wearable heads-up displays (WHUDs). The eye tracking system may determine a user's gaze location on a display of the WHUD utilizing a calibration point model that includes a plurality of calibration points. During regular use of the WHUD by the user, the calibration point model may be dynamically updated based on the user's interaction with user interface (UI) elements presented on the display. The UI elements may be specifically designed (e.g., shaped, positioned, displaced) to provide in-use and on-going dynamic calibration of the eye tracking system, which in at least some implementations may be unnoticeable to the user. 1. A wearable heads-up display (WHUD) , comprising:a support frame;a display carried by the support frame;a glint detection module carried by the support frame that, in operation, determines glint space points in a glint space that correspond to a region in a field of view of an eye of a user at which a gaze of the eye is directed;at least one processor carried by the support frame, the at least one processor communicatively coupled to the display and the glint detection module; and [ a glint space point in a glint space captured by the glint detection module, the glint space point representative of a position of an eye of a user of the WHUD; and', 'a display space point in a display space of the display, the display space point representative of a location on the display at which a gaze of the user is inferred to be resting when the glint space point is captured by the glint detection module;, 'obtain one or more calibration point models each comprising a plurality of calibration points, each calibration point comprising, 'generate a transform from the glint space to the display space for each of the calibration point models;', 'determine user gaze location in the display space using received glint information and the generated transform;', generate at ...

SEE-THROUGH COMPUTER DISPLAY SYSTEMS WITH VISION CORRECTION AND INCREASED CONTENT DENSITY

Provided herein are examples of an impact resistant glass-waveguide configuration for a see-through head-worn computer display. In embodiments, the configuration includes vision correction and content density control through electrochromic and/or photochromic systems. 1. An optical stack comprising:a waveguide;a first protective layer disposed on a first side of the waveguide;a second protective layer disposed on a second side of the waveguide;a vision corrective optic disposed on the first side of the waveguide; andan electrochromic layer disposed on the second side of the waveguide.2. The optical stack of claim 1 , wherein the first protective layer comprises polycarbonate.3. The optical stack of claim 1 , wherein the first protective layer comprises a protective plate.4. The optical stack of claim 1 , wherein the vision corrective optic is disposed between an eye of a user and the first protective layer.5. The optical stack of claim 1 , wherein the vision corrective optic comprises an elastomeric.6. The optical stack of claim 1 , wherein the vision corrective optic is coupled to the first protective layer via surface adhesion.7. The optical stack of claim 1 , wherein the first protective layer comprises the vision corrective optic.8. The optical stack of claim 1 , further comprising:a first air gap disposed between the waveguide and the first protective layer; anda second air gap disposed between the waveguide and the second protective layer.9. The optical stack of claim 1 , wherein the electrochromic layer is disposed between the waveguide and the second protective layer.10. The optical stack of claim 9 , wherein the electrochromic layer is coupled directly to the second protective layer.11. The optical stack of claim 9 , further comprising a substrate layer disposed between the electrochromic layer and the second protective layer claim 9 , wherein the electrochromic layer is coupled directly to the substrate layer.12. The optical stack of claim 1 , wherein the ...

SMARTGLASSES, LENS FOR SMARTGLASSES AND METHOD FOR GENERATING AN IMAGE ON THE RETINA

A spectacle lens for smartglasses can include at least one light source arrangement at the edge of the spectacle lens that emits coherent light, or at least one region at the edge of the spectacle lens for coupling in light from a light source arrangement that emits coherent light, or at least one light source arrangement that is embedded in the spectacle lens. A transparent or partly transparent display can provided to the spectacle lens such that coherent light emanating from the light source arrangement emits coherent light passing through the display or is reflected by the display. The wavefront of the coherent light is modulable in terms of its amplitude and/or its phase by an actuation of the display. A deformation device for deforming the wavefront of the coherent light before or after the modulation by the display can also be provided. 121-. (canceled)22. A spectacle lens for smartglasses , the spectacle lens comprising:a light source that emits coherent light, the light source either arranged at the edge of the spectacle lens or embedded in the spectacle lens or arranged at an input coupling region of the spectacle lens;a transparent or partly transparent display arranged on or in the spectacle lens such that coherent light emanating from the light source passes through the display or is reflected by the display, the display configured such that the wavefront of the coherent light is modulable in terms of one or both of its amplitude and its phase by an actuation of the display; anda deformation device for deforming the wavefront of the coherent light before or after the modulation by the display.23. The spectacle lens of claim 22 ,wherein the transparent or partly transparent display includes groups of display subregions,wherein the display subregions of the individual groups are arranged over the display with an alternating lateral distribution and each group of display subregions generates the same picture,wherein the deformation device for deforming the ...

DUAL DEPTH EXIT PUPIL EXPANDER

An optical device includes a waveguide including an in-coupling optical element configured to in-couple light into the waveguide, a light distributing element configured to receive light from the in-coupling optical element and distribute light at a selected wavelength, and an out-coupling optical element configured to receive light from the light distributing element and out-couple light out of the waveguide. The out-coupling optical element includes a first region configured to out-couple light at a first depth plane based on a lens function of the first region and a second region configured to out-couple light at a second depth plane based on a different lens function of the second region. 129-. (canceled)30. An eyepiece for a head mounted display comprising:a waveguide layer having a front face, a rear face and a plurality of edges, the waveguide layer configured to guide light therein from a location closer to one edge toward a location closer to another edge by total internal reflection from the front and rear faces; andan out-coupling optical element configured to receive the light guided within the waveguide layer by total internal reflection from the front face and the rear face and to out-couple at least a portion of the light out of the front face of the waveguide layer;wherein the eyepiece is configured to output a first portion of the light guided within the waveguide layer from a first region of the eyepiece as if the first portion of the light originated from a first depth with respect to the waveguide layer and to output a second portion of the light guided within the waveguide layer from a second region of the eyepiece as if the second portion of the light originated from a second depth with respect to the waveguide layer, the second region being laterally displaced with respect to the first region.31. The eyepiece of claim 30 , wherein at least a portion of the out-coupling optical element comprises at least one optical element having optical power ...

SMART TRANSPARENCY FOR HOLOGRAPHIC OBJECTS

A head mounted display (HMD) device is configured with a sensor package that enables head tracking to determine the device user's proximity to holographic objects in mixed reality or virtual reality environments. A fade volume including concentrically-arranged volumetric shells is placed around the user including a near shell that is closest to the user, and a far shell that is farthest from the user. When a holographic object is beyond the far shell, the HMD device renders the object with full opacity (i.e., with no transparency). As the user moves towards a holographic object and it intersects the far shell, its opacity begins to fade out with increasing transparency to reveal the background behind it. The transparency of the holographic object increases as the object gets closer to the near shell and the object becomes fully transparent when the near shell reaches it so that the background becomes fully visible. 1. A method performed by a head mounted display (HMD) device employed by a user occupying a physical environment , the HMD device supporting rendering of a mixed reality or virtual reality environment that includes holographic objects , comprising:placing a fade volume around the user, the fade volume having a near shell that is proximate to the user and a far shell that is distal to the user;determining a location of a holographic object with respect to the near and far shells by tracking the user's location within the mixed reality or virtual reality environment; andrendering the holographic object with transparency when it is located between the near and far shells, the transparency increasing as the object becomes closer to the near shell.2. The method of further including rendering the holographic object with full opacity when the holographic object is located beyond the far shell of the fade volume.3. The method of further including rendering the holographic object with full transparency when the holographic object intersects the near shell of the ...

Head-Mounted Display

A head mounted display (HMD) is provided with a frame worn on the head of an observer and supporting an optical unit, and a position adjusting mechanism. The position adjusting mechanism adjusts the position, in a vertical direction, of the optical unit by moving a nose-pad portion in the vertical direction relative to the frame. The optical unit includes: an observation optical system positioned in front of the eyes of the observer to cause light representing an image generated by an image generation unit to be diffracted and reflected by a hologram optical element in the direction of the observer's pupil, thereby enabling the observer to observe a virtual image of the image; and a rotating mechanism for causing the optical unit to rotate about an axis along the eye-width direction of the observer and to be held in an arbitrarily defined position.

VIRTUAL REALITY ENVIRONMENT WITH REAL WORLD OBJECTS

An HMD device renders a virtual reality environment in which areas of the real world are masked out so that real world objects such as computer monitors, doors, people, faces, and the like appear visible to the device user and no holographic or virtual reality content is rendered over the visible objects. The HMD device includes a sensor package to support application of surface reconstruction techniques to dynamically detect edges and surfaces of the real world objects and keep objects visible on the display as the user changes position or head pose or when the real world objects move or their positions are changed. The HMD device can expose controls to enable the user to select which real world objects are visible in the virtual reality environment. 1. A method performed by a head mounted display (HMD) device that supports rendering of a mixed-reality environment including holographic content from a virtual world and objects from a real world , comprising:obtaining sensor data for one or more objects in the real world included within a physical environment that adjoins a user of the HMD device;reconstructing a geometry for the one or more objects from the sensor data;using the reconstructed geometry, masking out areas of the real world for inclusion in the mixed-reality environment in which masked out areas contain no holographic content from the virtual world; andshowing the mixed-reality environment on a display in the HMD device including portions of the virtual world and the masked out areas of the real world.2. The method of in which the sensor data includes depth data and further including generating the sensor data using a depth sensor and applying surface reconstruction techniques to reconstruct the geometry.3. The method of further including generating depth data using depth-from-stereo imaging analyses.4. The method of further including tracking the user's head in the physical environment using reconstructed geometry of the physical environment to ...

THREE-DIMENSIONAL MIXED-REALITY VIEWPORT

An application running on a computing platform that employs three-dimensional (3D) modeling is extended using a virtual viewport into which 3D holograms are rendered by a mixed-reality head mounted display (HMD) device. The HMD device user can position the viewport to be rendered next to a real world 2D monitor and use it as a natural extension of the 3D modeling application. For example, the user can interact with modeled objects in mixed-reality and move objects between the monitor and the viewport. The 3D modeling application and HMD device are configured to exchange scene data for modeled objects (such as geometry, lighting, rotation, scale) and user interface parameters (such as mouse and keyboard inputs). The HMD device implements head tracking to determine where the user is looking so that user inputs are appropriately directed to the monitor or viewport. 1. A head mounted display (HMD) device operable by a user in a physical environment , comprising:one or more processors;a sensor package;a display configured for rendering a mixed reality environment to the user, a view position of the user for the rendered mixed-reality environment being variable depending at least in part on a pose of the user's head in the physical environment; and implementing a three-dimensional (3D) virtual viewport on the display,', 'supporting extensibility to a 3D modeling application executing on a remote computing platform, the application supporting a 3D model, and', 'rendering the 3D model as a hologram in the viewport., 'one or more memory devices storing computer-readable instructions which, when executed by the one or more processors, perform a method comprising the steps of2. The HMD of further including a network interface and receiving extensibility data from the remote computing platform over the network interface claim 1 , the extensibility data describing the 3D model and user inputs at the remote computing platform.3. The HMD of further including dynamically updating ...

SEE-THROUGH COMPUTER DISPLAY SYSTEMS

Aspects of the present invention relate to methods and systems for the see-through computer display systems with integrated IR eye imaging technologies. 1. A head-worn computer with a see-through computer display , comprising:a display panel adapted to project visible image light, project infrared light, and receive infrared light;the display panel arranged in the head-worn computer such that it projects the image light and projects the infrared light in a common optical path to be received at an eye of a user, wherein reflections from the eye are transmitted back towards the display panel in the common optical path; andthe display panel comprising a plurality of IR receivers adapted to receive the infrared light, wherein the plurality of IR receivers are arranged in a radial pattern to capture the reflections from the eye that represent a middle section of the eye.2. The head-worn computer of claim 1 , wherein the display panel comprises micro-LEDs to project the visible image light.3. The head-worn computer of claim 1 , wherein the display panel comprises OLED's to project the visible image light.4. The head-worn computer of claim 1 , wherein the display panel comprises reflective pixels to project the visible image light.5. The head-worn computer of claim 1 , wherein the middle section of the eye comprises the iris of the eye.6. The head-worn computer of claim 1 , wherein the middle section of the eye comprises the pupil of the eye.7. The head-worn computer of claim 1 , wherein the middle section of the eye comprises the retina of the eye. This disclosure relates to see-through computer display systems.Head mounted displays (HMDs) and particularly HMDs that provide a see-through view of the environment are valuable instruments. The presentation of content in the see-through display can be a complicated operation when attempting to ensure that the user experience is optimized. Improved systems and methods for presenting content in the see-through display are ...

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens are described. A method of embedding a diffractive element in an eyeglass lens includes applying a protective layer to a diffractive element, applying an interface layer to the protective layer, and applying a lens layer to the interface layer. The interface layer and the lens layer are each comprised of a resin material that hardens when cured. The interface layer is of a shape and thickness that adheres well to the protective layer after the interface layer is cured. The lens layer is of a shape and thickness that achieves the desired component shape of the lens after the lens layer is cured.

SYSTEMS, DEVICES, AND METHODS FOR EMBEDDING A DIFFRACTIVE ELEMENT IN AN EYEGLASS LENS

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens are described. A method of embedding a diffractive element in an eyeglass lens includes applying a protective layer to a diffractive element, applying an interface layer to the protective layer, and applying a lens layer to the interface layer. The interface layer and the lens layer are each comprised of a resin material that hardens when cured. The interface layer is of a shape and thickness that adheres well to the protective layer after the interface layer is cured. The lens layer is of a shape and thickness that achieves the desired component shape of the lens after the lens layer is cured. 1. A wearable heads-up display (“WHUD”) comprising:a support structure;an image source; and an inner layer comprising a diffractive element;', 'a protective layer that encapsulates the diffractive element;', 'an interface layer that encapsulates the protective layer, wherein the interface layer comprises a resin material; and', 'a lens layer that encapsulates the interface layer, wherein the lens layer comprises the resin material, and wherein the interface layer provides adhesion between the protective layer and the lens layer., 'a transparent combiner positioned and oriented to appear in a field of view of an eye of a user when the support structure is worn on a head of the user, the transparent combiner comprising2. The WHUD of wherein the protective layer includes a surface physically coupled to the interface layer and a surface physically coupled to the inner layer claim 1 , and wherein the surface of the protective layer that is physically coupled to the interface layer has a higher surface energy than the surface of the protective layer that is physically coupled to the inner layer.3. The WHUD of wherein the diffractive element comprises a photopolymer material.4. The WHUD of wherein the protective layer comprises a polycarbonate material.5. The WHUD of wherein both the interface ...

SYSTEMS, DEVICES, AND METHODS FOR EMBEDDING A DIFFRACTIVE ELEMENT IN AN EYEGLASS LENS

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens are described. A method of embedding a diffractive element in an eyeglass lens includes applying a protective layer to a diffractive element, applying an interface layer to the protective layer, and applying a lens layer to the interface layer. The interface layer and the lens layer are each comprised of a resin material that hardens when cured. The interface layer is of a shape and thickness that adheres well to the protective layer after the interface layer is cured. The lens layer is of a shape and thickness that achieves the desired component shape of the lens after the lens layer is cured. 1. An eyeglass lens for use in a wearable heads-up display , the eyeglass lens comprising:a diffractive element having a world-side and an eye-side;a world-side protective layer physically coupled to the world-side of the diffractive element;an eye-side protective layer physically coupled to the eye-side of the diffractive element;a first world-side resin layer physically coupled to the world-side protective layer, the first world-side resin layer having a world-side and an eye-side;a second world-side resin layer physically coupled to the world-side of the first world-side resin layer;a first eye-side resin layer physically coupled to the eye-side protective layer, the first eye-side resin layer having a world-side and an eye-side; anda second eye-side resin layer physically coupled to the eye-side of the first eye-side resin layer.2. The eyeglass lens of wherein the world-side protective layer includes a world-side surface and an eye-side surface claim 1 , and wherein the world-side surface of the world-side protective layer has a higher surface energy than the eye-side surface of the world-side protective layer.3. The eyeglass lens of wherein the eye-side protective layer includes an eye-side surface and a world-side surface claim 1 , and wherein the eye-side surface of the eye-side ...

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens are described. A method of embedding a diffractive element in an eyeglass lens includes applying a protective layer to a diffractive element, applying an interface layer to the protective layer, and applying a lens layer to the interface layer. The interface layer and the lens layer are each comprised of a resin material that hardens when cured. The interface layer is of a shape and thickness that adheres well to the protective layer after the interface layer is cured. The lens layer is of a shape and thickness that achieves the desired component shape of the lens after the lens layer is cured.

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens

Systems, devices, and methods for embedding a diffractive element in an eyeglass lens are described. A method of embedding a diffractive element in an eyeglass lens includes applying a protective layer to a diffractive element, applying an interface layer to the protective layer, and applying a lens layer to the interface layer. The interface layer and the lens layer are each comprised of a resin material that hardens when cured. The interface layer is of a shape and thickness that adheres well to the protective layer after the interface layer is cured. The lens layer is of a shape and thickness that achieves the desired component shape of the lens after the lens layer is cured.

Systems, devices, and methods for laser projection in wearable heads-up displays

There is provided a wearable heads-up display (WHUD) having a laser projector to generate a display image. The display image can have a pixel having a pixel on-time. Furthermore, the laser projector can have a laser diode to emit laser light. The WHUD can also include a controller communicatively coupled to the laser diode. The controller can modulate the laser diode during the pixel on-time to be off during a laser off-time of the pixel on-time and on during a laser on-time of the pixel on-time. Moreover, the WHUD can include a holographic optical element to receive the laser light from the laser projector and redirect the laser light towards an eye of a user of the WHUD.

Waveguide Device with Uniform Output Illumination

Various embodiments of waveguide devices are described. A debanding optic may be incorporated into waveguide devices, which may help supply uniform output illumination. Accordingly, various waveguide devices are able to output a substantially flat illumination profile eliminating or mitigating banding effects. 1. A waveguide device comprising:at least one optical substrate;at least one light source;at least one light coupler capable of coupling incident light from the light source with an angular bandwidth into a total internal reflection (TIR) within the at least one optical substrate such that a unique TIR angle is defined by each light incidence angle as determined at the input grating;at least one light extractor for extracting the light from the optical substrate; anda debanding optic capable of mitigating banding effects of an illuminated pupil, such that the extracted light is a substantially flat illumination profile having mitigated banding.2. The waveguide device of claim 1 , wherein the extracted light has a spatial non-uniformity less than one of either 10% or 20%.3. (canceled)4. The waveguide device of claim 1 , wherein the debanding optic is an effective input aperture such that when the optical substrate has a thickness D claim 1 , the input aperture is configured to provide a TIR angle U in the optical substrate claim 1 , and the angle U is calculated by 2D tan (U).5. The waveguide device of claim 4 , wherein the debanding optic provides spatial variation of the light along the TIR path of at least one of diffraction efficiency claim 4 , optical transmission claim 4 , polarization or birefringence.6. The waveguide device of claim 1 , wherein the debanding optic is at least one grating selected from at least one input grating and at least one output grating claim 1 , and wherein the selected at least one grating is a configuration selected from the group of:multiple gratings, such that each grating provides a small pupil shift to mitigate banding;a ...

VIRTUAL AND AUGMENTED REALITY SYSTEMS AND METHODS HAVING IMPROVED DIFFRACTIVE GRATING STRUCTURES

Disclosed is an improved diffraction structure for 3D display systems. The improved diffraction structure includes an intermediate layer that resides between a waveguide substrate and a top grating surface. The top grating surface comprises a first material that corresponds to a first refractive index value, the underlayer comprises a second material that corresponds to a second refractive index value, and the substrate comprises a third material that corresponds to a third refractive index value. 1. An augmented reality (AR) display system for delivering augmented reality content to a user , comprising:an image-generating source to provide one or more frames of image data;a light modulator to transmit light associated with the one or more frames of image data;a diffractive optical element (DOE) to receive the light associated with the one or more frames of image data and direct the light to the user's eyes, the DOE comprising a diffraction structure having a waveguide substrate, a surface grating, and an underlayer disposed between the waveguide substrate and the surface grating; andwherein the surface grating has a surface grating refractive index, the underlayer has an underlayer refractive index, and the surface grating refractive index is greater than the underlayer refractive index.2. The system of claim 1 , wherein the underlayer refractive index is approximately 1.79 or 1. 84.3. The system of claim 1 , wherein the waveguide substrate has a waveguide substrate refractive index claim 1 , and the waveguide substrate refractive index is approximately 1.5 claim 1 , 1.7 claim 1 , or 1.8.4. The system of claim 1 , wherein all of the waveguide substrate claim 1 , the underlayer claim 1 , and the surface grating correspond to different refractive index values.5. The system of claim 1 , wherein the underlayer refractive index is higher value compared to a waveguide refractive index.6. The system of claim 1 , wherein the waveguide substrate claim 1 , the underlayer ...

OPTICAL DEVICE, IMAGE DISPLAY DEVICE, AND DISPLAY APPARATUS

An optical device includes a first A deflecting member, a first B deflecting member, a first C deflecting member, a second A deflecting member, a second B deflecting member, and a second C deflecting member. Light emitted from an image forming device that enters the first A deflecting member and is emitted toward a pupil of an observer via the first B deflecting member and the first C deflecting member. Light emitted from the image forming device that enters the second A deflecting member is emitted toward the pupil of the observer via the second B deflecting member and the second C deflecting member. A direction of light deflected by the first A deflecting member that is orthogonally projected on a light guide plate is opposite a direction of light deflected by the second A deflecting member that is orthogonally projected on the light guide plate. 1. An optical device , on which light emitted from an image forming device is incident , in which the light is guided , and from which the light is emitted , the optical device comprising:a light guide plate;a first deflecting unit; anda second deflecting unit, whereinthe first deflecting unit includes a first A deflecting member, a first B deflecting member, and a first C deflecting member,the second deflecting unit includes a second A deflecting member, a second B deflecting member, and a second C deflecting member,part of the light emitted from the image forming device enters the first A deflecting member,the light incident on the first A deflecting member is deflected by the first A deflecting member, enters the first B deflecting member by total reflection inside of the light guide plate, is deflected by the first B deflecting member, enters the first C deflecting member by total reflection inside of the light guide plate, is deflected by the first C deflecting member, and is emitted toward a pupil of an observer,at least remaining part of the light emitted from the image forming device enters the second A deflecting ...

Display apparatus

A display apparatus that can surely make an image reach an observer's pupil without imposing a burden on the observer. The apparatus includes: an eyepiece optical system; and an image display apparatus including an image forming apparatus and a transfer optical system. The eyepiece optical system and the image display apparatus are spatially separated from each other, the eyepiece optical system forms an image from the transfer optical system on a retina of an observer, the image display apparatus further includes a first position detection apparatus that detects a position of the eyepiece optical system, a second position detection apparatus that detects a position of a pupil of the observer. On the basis of detected positional information of the eyepiece optical system and the pupil, the transfer optical system is controlled such that the image incident from the image forming apparatus reaches the eyepiece optical system.

Headset and head-mounted display

Headsets and head-mounted displays including first and second diffractive elements are described. In some cases, the first and second diffractive elements include first and second grating surfaces, and for at least one wavelength, the first and second grating surfaces have at least one different corresponding diffractive property. The head-mounted display may include two-dimensionally pixelated adjacent first and second display surfaces for displaying images, and first and second diffractive elements disposed adjacent the respective first and second display surfaces. In some cases, the first diffractive element is configured to diffract a first wavelength λ1, but not a different second wavelength into zero and first diffraction orders having intensities within 5% of each other, and the second diffractive element is configured to diffract the second wavelength but not the first wavelength 1, into zero and first diffraction orders having intensities within 5% of each other.

OPTICAL ASSEMBLY FOR HEAD-MOUNTABLE DEVICE

Head-mountable devices can include an arrangement of components that include a waveguide that is decoupled from the ability of system loads to be transferred into the waveguide. Such decoupling can be achieved by utilizing an elastic bond with low stiffness to bond certain components together. This allows the system to flex and deform without transferring stress to the waveguide. Such decoupling can also be achieved by selectively bonding in regions that have relatively lower displacements between a support structure and the waveguide. These measures can help preserve component alignment while allowing a head-mountable device to be lightweight and small in size. 1. A head-mountable device comprising:a frame;a lens coupled to the frame by a first adhesive bond; anda waveguide coupled to the lens by a second adhesive bond, wherein the second adhesive bond is more flexible than the first adhesive bond so that the waveguide is at least partially isolated from a load applied by the frame to the lens, the waveguide being configured to move relative to the frame and the lens.2. The head-mountable device of claim 1 , wherein the first adhesive bond has a first modulus of elasticity claim 1 , and the second adhesive bond has a second modulus of elasticity that is lower than the first modulus of elasticity.3. The head-mountable device of claim 1 , wherein:the lens is a first lens;the head-mountable device further comprises a second lens; andthe waveguide is positioned between the first lens and the second lens.4. The head-mountable device of claim 3 , wherein the first lens is coupled to the second lens by a third adhesive bond that isolates the waveguide from an external environment.5. The head-mountable device of claim 1 , wherein the lens has a lip defining a recess claim 1 , wherein the waveguide is positioned within the recess.6. The head-mountable device of claim 1 , further comprising:an arm extending away from the frame; anda display element within the arm and ...

APPARATUS FOR EYE TRACKING

An eye tracker having a waveguide for propagating illumination light towards an eye and propagating image light reflected from at least one surface of an eye, a light source optically coupled to the waveguide, and a detector optically coupled to the waveguide. Disposed in the waveguide is at least one grating lamina for deflecting the illumination light towards the eye along a first waveguide path and deflecting the image light towards the detector along a second waveguide path. 120.-. (canceled)21. An eye tracker comprising: a source , a detector; and a waveguiding structure comprising a first waveguide containing an input coupler for coupling illumination from said source into a first TIR waveguide path in said first waveguide and a second grating for coupling light out of said first TIR waveguide path onto an eye; and a second waveguide containing a second grating for coupling light reflected from at least one surface of eye into a second TIR waveguide path in said second waveguide and an output coupler for coupling light out of said second TIR path onto said detector.22. The apparatus of wherein said first and second waveguide are formed as a single continuous waveguide layer.23. The apparatus of wherein said first and second waveguide are configured as separate overlapping waveguide layers wherein first grating at least partially overlaps said second grating.24. The apparatus of wherein said second grating comprises a multiplicity of electrically switchable elements each having a diffracting state for coupling light from said eye into said waveguide and a non-diffracting state.25. The apparatus of wherein said first and second waveguide paths are in opposing directions.26. The apparatus of wherein said first grating is disposed in proximity to an upper or lower edge of said second grating along said first waveguide path.27. The apparatus of wherein said first grating comprises first and second gratings disposed in proximity to upper and lower edges of said ...

HEAD-MOUNTED DISPLAY APPARATUS

A head-mounted display apparatus includes a display unit including a substrate and display elements, and an optical element. The substrate includes a plurality of display portions and a plurality of light-transmitting portions, and the display elements are on the plurality of display portions of the substrate. The optical element is in an optical path of light that is emitted from the display unit and has through-holes that respectively correspond to the plurality of light-transmitting portions. 1. A head-mounted display apparatus comprising:a display unit comprising a substrate and display elements, the substrate comprising a plurality of display portions and a plurality of light-transmitting portions, and the display elements being on the plurality of display portions of the substrate; andan optical element in an optical path of light that is emitted from the display unit and having through-holes that respectively correspond to the plurality of light-transmitting portions.2. The head-mounted display apparatus of claim 1 , wherein the plurality of display portions are spaced from each other claim 1 , and the light-transmitting portions are between respective ones of the plurality of display portions.3. The head-mounted display apparatus of claim 1 , wherein the display elements are non-transmitting elements.4. The head-mounted display apparatus of claim 1 , wherein the optical element is configured to focus light emitted from the display elements onto a preset point.5. The head-mounted display apparatus of claim 1 , wherein the optical element is a Fresnel lens or is a holographic optical element (HOE) having the through-holes.6. The head-mounted display apparatus of claim 1 , wherein the plurality of display portions are a plurality of parallel claim 1 , linear shapes that are spaced from each other.7. The head-mounted display apparatus of claim 1 , further comprising a frame accommodating the display unit and the optical element and configured to be placed on a ...

METHOD AND APPARATUS FOR HEAD WORN DISPLAY WITH MULTIPLE EXIT PUPILS

A method for displaying an image viewable by an eye, the image being projected from a portable head worn display, comprises steps of: emitting a plurality of light beams of wavelengths that differ amongst the light beams; directing the plurality of light beams to a scanning mirror; modulating in intensity each one of the plurality of light beams in accordance with intensity information provided from the image, whereby the intensity is representative of a pixel value within the image; scanning the plurality of light beams in two distinct axes with the scanning mirror to form the image; and redirecting the plurality of light beams to the eye using a holographic optical element acting as a reflector of the light beams, whereby the redirecting is dependent on the wavelength of the light beam, to create for each light beam an exit pupil at the eye that is spatially separated from the exit pupils of the other light beams. 175-. (canceled)76. A method comprising:emitting a plurality of light beams, a wavelength of at least one of the plurality of light beams to differ from a wavelength of at least one other of the plurality of light beams;modulating an intensity of at least one of the plurality of light beams based at least in part on intensity information corresponding to an image to be projected;scanning the plurality of light beams in two distinct axes to form the image; andredirecting the plurality of light beams to a plurality of exit pupils based at least in part on the wavelengths of each of the light beams to project the image at the plurality of exit pupils.77. The method of claim 76 , wherein a first exit pupil of the plurality of exit pupils is spatially separated from a second exit pupil of the plurality of exit pupils.78. The method of claim 76 , wherein the intensity of the light beams is representative of pixel values within the image.79. The method of claim 76 , comprising:forming a first bundle of light beams, each light beam of the first bundle of light ...

IMAGE LIGHT GUIDE WITH EXPANDED LIGHT DISTRIBUTION OVERLAPPING GRATINGS

An image light guide for conveying a virtual image has a waveguide that conveys image-bearing light, formed as a flat plate having an in-coupling diffractive optic with a first grating vector diffracting an image-bearing light beam into the waveguide and directing diffracted light. An out-coupling diffractive optic is formed as a plurality of overlapping diffraction gratings including a first grating pattern having first grating vector k and a second grating pattern having a second grating vector k for expanding and ejecting the expanded image bearing beams from the waveguide into an expanded eyebox within which the virtual image can be seen. 125.-. (canceled)26. An image light guide for conveying a virtual image comprising:a waveguide having a transmissive substrate with front and back surfaces, wherein the substrate is operable to propagate image-bearing light beams along a length of the waveguide;an in-coupling diffractive optic formed along the waveguide, wherein the in-coupling diffractive optic is operable to diffract the image-bearing light beams from an image source into the waveguide, whereby at least a portion of the image-bearing light beams propagate along the waveguide in an angularly encoded form;an out-coupling diffractive optic spaced apart from the in-coupling diffractive optic along the length of the waveguide, wherein the out-coupling diffractive optic is operable to diffract the image-bearing light beams from the waveguide in an angularly decoded form toward an eyebox;wherein the out-coupling diffractive optic comprises a plurality of diffractive features in a plane defining a plurality of diffraction patterns having different orientations within the plane, wherein two or more diffraction patterns are operable to relatively displace portions of each of the image-bearing light beams in to dimensions for expanding the eyebox;wherein each of the diffractive features comprises a length and width in the plane defining an aspect ratio of length to ...

ADHESIVE COMPOSITION

The present disclosure provides an adhesive composition including an aliphatic urethane (meth)acrylate, a thickener and a spacer. The adhesive composition has printability that printing can be effectively performed into a pattern with a thin width or the like, and is capable of forming an adhesive having excellent physical properties such as transparency, a gap maintaining ability capable of maintaining a constant cell gap between films and adhesive force. The adhesive composition is useful for constituting an optical element for HMDs. 1. An adhesive composition , comprising:an aliphatic urethane (meth)acrylate;a thickener; anda spacer.2. The adhesive composition according to claim 1 , of which a viscosity is 200 claim 1 ,000 cP or more claim 1 , the viscosity being measured at room temperature at a shear rate of 0.1 sec.3. The adhesive composition according to claim 1 , wherein the urethane (meth)acrylate comprises units of aliphatic polyol claim 1 , diisocyanate compound and (meth)acrylate having a hydroxyl group at its terminal.4. The adhesive composition according to claim 1 , wherein the urethane (meth)acrylate has a glass transition temperature of 80° C. or lower.5. The adhesive composition according to claim 1 , wherein the urethane (meth)acrylate has a weight average molecular weight in a range of 1 claim 1 ,000 to 100 claim 1 ,000.6. The adhesive composition according to claim 1 , wherein the urethane (meth)acrylate is comprised in a ratio the adhesive composition in a range of 50 to 90 weight %.7. The adhesive composition according to claim 1 , wherein the thickener is fumed silica claim 1 , clay claim 1 , zeolite or talc.8. The adhesive composition according to claim 1 , wherein the thickener is comprised in an amount from 5 to 50 parts by weight relative to 100 parts by weight of the aliphatic urethane (meth)acrylate.9. The adhesive composition according to claim 1 , wherein the spacer has a D50 particle diameter in a range of from 10 μm to 200 μm.10. ...

SYSTEMS, DEVICES, AND METHODS FOR NARROW WAVEBAND LASER DIODES

Systems, devices, and methods for narrow waveband laser diodes are described. The conventional coating on the output facet of a laser diode is replaced with a notch filter coating that is reflective of wavelengths within a narrow waveband around the nominal output wavelength of the laser diode and transmissive of other wavelengths. The notch filter coating ensures the laser diode will lase at the nominal wavelength and not lase for wavelengths outside of the narrow waveband. The notch-filtered laser diode provides a narrow waveband output that is matched to the playback wavelength of at least one hologram in a transparent combiner of a wearable heads-up display, and thereby reduces or eliminates display aberrations that can result from wavelength sensitivity of the playback properties of the hologram. 1. A wearable heads-up display comprising:a support structure that in use is worn on a head of a user of the wearable heads-up display;a transparent combiner carried by the support structure and positioned in a field of view of an eye of the user when the support structure is worn on the head of the user, wherein the transparent combiner includes at least one holographic optical element; anda laser projector carried by the support structure and positioned and oriented to project laser light onto the at least one holographic optical element, wherein the laser projector includes at least one laser diode and the at least one laser diode comprises:a layer of p-type semiconductor material;a layer of n-type semiconductor material;a layer of optically active material disposed between the layer of p-type semiconductor material and the layer of n-type semiconductor material;a reflective rear facet at a first end of the layer of optically active material;a partially reflective output facet at a second end of the layer of optically active material, the second end opposite the first end across a length of the layer of optically active material to define a laser cavity at least ...

SYSTEMS, DEVICES, AND METHODS FOR NARROW WAVEBAND LASER DIODES

Systems, devices, and methods for narrow waveband laser diodes are described. The conventional coating on the output facet of a laser diode is replaced with a notch filter coating that is reflective of wavelengths within a narrow waveband around the nominal output wavelength of the laser diode and transmissive of other wavelengths. The notch filter coating ensures the laser diode will lase at the nominal wavelength and not lase for wavelengths outside of the narrow waveband. The notch-filtered laser diode provides a narrow waveband output that is matched to the playback wavelength of at least one hologram in a transparent combiner of a wearable heads-up display, and thereby reduces or eliminates display aberrations that can result from wavelength sensitivity of the playback properties of the hologram. 1. A method of fabricating a narrow waveband laser diode , the method comprising:forming a laser cavity;positioning a first facet at a first end of the laser cavity;coating a second facet with a notch filter coating; andpositioning the second facet, with the notch filter coating applied thereto, at a second end of the laser cavity, the second end opposite the first end across a length of the laser cavity.2. The method of wherein:positioning a first facet at a first end of the laser cavity includes positioning a reflective rear facet at the first end of the laser cavity;coating a second facet with a notch filter coating includes coating a partially reflective output facet with the notch filter coating; andpositioning the second facet, with the notch filter coating applied thereto, at a second end of the laser cavity includes positioning the partially reflective output facet, with the notch filter coating applied thereto, at the second end of the laser cavity.3. The method of claim 2 , further comprising:coating the reflective rear facet with the notch filter coating prior to positioning the reflective rear facet at the first end of the laser cavity.4. The method of ...

Integrated MicroOptic Imager, Processor, and Display

An optical system for displaying light from a scene includes an active optical component that includes a first plurality of light directing apertures, an optical detector, a processor, a display, and a second plurality of light directing apertures. The first plurality of light directing apertures is positioned to provide an optical input to the optical detector. The optical detector is positioned to receive the optical input and convert the optical input to an electrical signal corresponding to intensity and location data. The processor is connected to receive the data from the optical detector and process the data for the display. The second plurality of light directing apertures is positioned to provide an optical output from the display.

PRIVATE COMMUNICATION WITH GAZING

Content from a user computing device may be transmitted to at least one recipient computing device. A plurality of avatars is displayed that each represent different recipients associated with recipient computing devices. A group communication session is established among the user computing device and the recipient computing devices. During the group communication session: initial content is transmitted from the user computing device to each recipient computing device; based on determining that the user id gazing at a selected avatar, a private communication session is established between the user computing device and the recipient computing device associated with the selected avatar. During the private communication session, subsequent content is transmitted from the user computing device to such recipient computing device, and is not transmitted to the other recipient computing devices. 1. A method for transmitting content from a user computing device to at least one recipient computing device , the method comprising:displaying to a user of the user computing device a plurality of avatars, wherein each of the avatars represents a different recipient, and each of the different recipients is associated with a different recipient computing device;establishing a group communication session among the user computing device and each of the different recipient computing devices; and transmitting initial content from the user computing device to each of the different recipient computing devices;', 'determining that the user of the user computing device is gazing at a selected avatar of the plurality of avatars;', 'based on determining that the user is gazing at the selected avatar, establishing a private communication session between the user computing device and the recipient computing device that is associated with the selected avatar; and', 'during the private communication session, transmitting subsequent content from the user computing device to the recipient ...

IMAGE GENERATING DEVICE AND IMAGE GENERATING METHOD

This invention is provided with: a light source; a light scanning mirror; a measurement mechanism for measuring a change in the intensity of light reflected from an eyeball as time elapses through the scanning of at least a surface of the pupil with a light beam by means of the light scanning mirror; a sampling mechanism for sampling the intensity of light reflected from the pupil from the measured change in the intensity of the reflected light as time elapses; and a mechanism for detecting the size and the position of the pupil by synchronizing the sampled intensity of light reflected from the pupil, and the scanning time during which the surface of the eyeball is scanned; and an image generating mechanism for forming an image on the retina of the eyeball by projecting a light beam for generating an image onto the pupil in the detected position while scanning. 1. An image generating device , comprising:a light source;a light scanning mirror for scanning with light from the light source;a measurement mechanism for measuring a change in the intensity of light reflected from an eyeball as time elapses through the scanning of at least a surface of the pupil with a light beam by means of the light scanning mirror;a sampling mechanism for sampling the intensity of light reflected from the pupil from the measured change in the intensity of the reflected light as time elapses; anda mechanism for detecting the size and the position of the pupil by synchronizing the sampled intensity of light reflected from the pupil, and the scanning time during which the surface of the eyeball is scanned; andan image generating mechanism for forming an image on the retina of the eyeball by projecting a light beam for generating an image onto the pupil in the detected position while scanning.2. The image generating device according to claim 1 , wherein the pupil position detection mechanism has a reflection member from which the light beam for the scanning by means of the light scanning ...

METHOD AND SYSTEM FOR CALIBRATING A WEARABLE HEADS-UP DISPLAY HAVING MULTIPLE EXIT PUPILS

A method of calibrating a wearable heads-up display includes generating visible light that is representative of the white color of the pixels of a display UI by a plurality of light sources of the wearable heads-up display and projecting the visible light to an exit pupil of the wearable heads-up display. A measured white point of the exit pupil is determined from the visible light received at the exit pupil. The measured white point of the exit pupil is compared to a target white point, and a set of factors by which to scale the power of the light sources is determined based on the comparison. The method may be applied to all the exit pupils of the wearable heads-up display such that the wearable heads-up display has a uniform white point across all the exit pupils. 1. A method of calibrating a wearable heads-up display having multiple exit pupils , the method comprising: [ generating visible light that is representative of the white color of the pixel by a plurality of light sources of the wearable heads-up display; and', 'projecting the visible light to the at least one exit pupil by the wearable heads-up display;, 'for each pixel of a plurality of pixels of a display user interface (UI), the plurality of pixels having a white color, 'determining a measured white point of the at least one exit pupil from at least a portion of the visible light received at the at least one exit pupil; and', 'determining a set of factors by which to scale a power of each of the plurality of light sources based on minimizing a difference between the measured white point of the at least one exit pupil and the target white point., 'calibrating a white point of at least one exit pupil to a target white point, the calibrating comprising2. The method of claim 1 , wherein calibrating a white point of at least one exit pupil to a target white point further comprises generating the display UI.3. The method of claim 1 , wherein calibrating a white point of at least one exit pupil to a target ...

MULTI-PART OPTICAL SYSTEM FOR LIGHT PROPAGATION IN CONFINED SPACES AND METHOD OF FABRICATION AND USE THEREOF

The present invention is a Substrate guided hologram that allows a wider range of optical devices based on SGHs with improved parameters such as larger NTE displays with a wider field of view, thinner substrates and more compact form factors. The Substrate-Guided Hologram of the subject invention includes a holographic lens which is positioned at an angle to and spaced from a holographic grating, with a mirror located at a diagonal to each of the lens and the grating. 15.-. (canceled)6. An optical system comprising:(a) a light source comprising a light beam;(b) a holographic lens fixed to a first substrate spaced in proximity of the light source at or within the focal distance of the holographic lens;(c) a holographic grating fixed to a second substrate spaced apart from and at an angle to the first substrate;(d) a mirror located at a diagonal to and between the holographic lens and the holographic grating;wherein the light beam travels from the light source through the first substrate to the holographic lens then through the first substrate by total internal reflection to bounce off the mirror into the second substrate to the holographic grating by total internal reflection and then out-coupled for viewing by a user.7. The optical system of therein the first substrate has a different refractive index from the second substrate.8. The optical system of wherein the first substrate has a larger refractive index than the holographic lens.9. The optical system of wherein the second substrate has a smaller index of refraction than the holographic grating.10. The optical system of further comprising a helmet to which the optical system is mounted.11. The optical system of wherein the holographic lens is positioned perpendicularly to the holographic grating.12. The optical system of wherein the holographic lens is positioned at an angle comprising 0° to 360° relative to the holographic grating.13. The optical system of wherein the holographic lens is positioned at an angle ...

IMAGE DISPLAY DEVICE

An image display device includes, an imaging light generation part configured to generate an imaging light having a single color, a light-guiding plate, an incident side diffraction element provided at a light incident part of the light-guiding plate, and configured to cause the imaging light to enter the light-guiding plate, an exit side diffraction element provided at a light emitting part of the light-guiding plate, and configured to cause the imaging light propagating within the light-guiding plate to exit, and an angle dependent reflective film provided between the light-guiding plate and the exit side diffraction element, and having a reflectance varying depending on magnitude of a propagation angle of the imaging light, in which the reflectance for the imaging light propagating at a relatively small propagation angle is larger than the reflectance for the imaging light propagating at a relatively large propagation angle. 1. An image display device , comprising: a light-guiding plate;', 'an incident side diffraction element provided at a light incident part of the light-guiding plate, and configured to cause the imaging light to enter the light-guiding plate;', 'an exit side diffraction element provided at a light emitting part of the light-guiding plate, and configured to cause the imaging light propagating within the light-guiding plate to exit; and', 'an angle dependent reflective film provided between the light-guiding plate and the exit side diffraction element, and having a reflectance varying depending on magnitude of a propagation angle of the imaging light propagating within the light-guiding plate, wherein', 'the reflectance of the angle dependent reflective film for the imaging light propagating at a relatively small propagation angle is larger than the reflectance of the angle dependent reflective film for the imaging light propagating at a relatively large propagation angle., 'an imaging light generation part configured to generate an imaging ...

Video Display Device And Head-Mounted Display

A video display device is provided with: a display element which modulates light from an illumination optical system, and displays video; and an ocular optical system for guiding video light from the display element into a pupil of an observer. The ocular optical system is provided with: an ocular prism which guides the video light therein; and a holographic optical element (HOE). The HOE is provided abutting the ocular prism, and is a volume-phase-type hologram which diffracts and reflects the video light guided inside the ocular prism. A surface of the ocular prism, said surface abutting the HOE, has a curvature of 0 in one direction, and has a curvature which is not 0 in a direction orthogonal to the one direction. The diffraction power of the HOE is not 0 in the one direction, and is 0 in the direction orthogonal to the one direction.

PERIPHERAL FIELD-OF-VIEW ILLUMINATION SYSTEM FOR A HEAD MOUNTED DISPLAY

A display system for a head mounted device that illuminates the peripheral regions of the user's field of view to enhance an immersive experience. The system may use peripheral light emitters to the left and right of one or more central displays. Peripheral light emitters may provide lower resolution images, or only with vertical resolution, corresponding to the user's lower resolution vision in these peripheral regions. Reflective surfaces and lenses may be used to direct peripheral light into desired shapes and patterns. Rendering of peripheral light colors and intensities at each peripheral pixel may use approximations for improved performance since users may not be sensitive to precise color values in the peripheral regions. 1. A peripheral field-of-view illumination system for a head-mounted display comprising:a mount configured to be worn on a head of a user;one or more displays coupled to said mount and located in front of a left eye and a right eye of said user;a left peripheral light emitter located on a left side of said one or more displays;a right peripheral light emitter located on a right side of said one or more displays;a 3D model of a scene;a display renderer coupled to said 3D model of said scene and to said one or more displays; and,a peripheral renderer coupled to said 3D model of said scene, to said left peripheral light emitter, and to said right peripheral light emitter; ["said one or more displays form one or more display images in a central portion of said user's field-of-view;", 'light from said left peripheral light emitter is projected left of said one or more display images;', 'light from said right peripheral light emitter is projected right of said one or more display images;', 'said left peripheral light emitter and said right peripheral light emitter each comprise a plurality of peripheral light pixels located at different vertical positions;', 'said display renderer assigns a display pixel color to each pixel of said one or more ...

Near-Ocular Display Based On Hologram Projection

A display device includes a two-dimensional array of tiles. Each tile includes a two-dimensional array of pixels and a lens, of a two-dimensional array of lenses. Each pixel is configured to output light so that the two-dimensional array of pixels outputs a respective pattern of light. Each lens is configured to direct at least a portion of the respective pattern of light from the two-dimensional array of pixels to a pupil of an eye of a user. The display device also includes one or more processors configured to obtain a transformed image for forming a non-transformed image on a retina of the eye; and activate a subset of the two-dimensional array of tiles for outputting, from at least the subset of the two-dimensional array of tiles, a collective pattern of light that is based on the transformed image and directed to the pupil of the eye. 1. A display device , comprising: a two-dimensional array of pixels, wherein each pixel is configured to output light so that the two-dimensional array of pixels outputs a respective pattern of light; and', 'a lens, of a two-dimensional array of lenses, configured to direct at least a portion of the respective pattern of light from the two-dimensional array of pixels to a pupil of an eye of a user; and, 'a two-dimensional array of tiles, each tile comprising obtain a transformed image for forming a non-transformed image on a retina of the eye of the user; and', 'activate a subset of the two-dimensional array of tiles for outputting, from at least the subset of the two-dimensional array of tiles, a collective pattern of light that is directed to the pupil of the eye of the user, wherein the collective pattern of light is configured to form the non-transformed image on the retina of the eye of the user., 'one or more processors coupled with the two-dimensional array of tiles and configured to2. The display device of claim 1 , wherein the one or more processors are configured to:generate the transformed image from the non-transformed ...

Enhanced Pixel Resolution through Non-Uniform Ocular Projection

A display device includes a two-dimensional array of tiles. Each tile includes a two-dimensional array of pixels and a lens, of a two-dimensional array of lenses. The display device also includes one or more processors coupled with the two-dimensional array of tiles and configured to: obtain a transformed image for projecting a non-transformed image on a retina of an eye of a user; activate a first subset of the two-dimensional array of tiles for projecting a first portion of the transformed image on the retina of the eye of the user with a first resolution; and activate a second subset of the two-dimensional array of tiles for projecting a second portion of the transformed image on the retina of the eye of the user with a second resolution.

Composite diffraction element, instrument, and image projection system

The present technology aims to provide a diffraction element that functions like a transmissive hologram, and more particularly, aims to provide a diffraction element suitable for forming an image projection system. The present technology provides a composite diffraction element that includes a stack structure including a first diffraction element, a second diffraction element, and a third diffraction element in this order. The second diffraction element diffractively reflects light that has passed through the first diffraction element and reached the second diffraction element, toward the first diffraction element. The first diffraction element diffractively reflects the light diffractively reflected by the second diffraction element, toward the third diffraction element. The third diffraction element transmits the light diffractively reflected by the first diffraction element, and diffractively reflects zeroth-order light that has passed through the first diffraction element and the second diffraction element.

WAVEGUIDE-BASED ILLUMINATION FOR HEAD MOUNTED DISPLAY SYSTEM

A head-mounted display system is configured to project light to an eye of a user wearing the head-mounted display system to display content in a vision field of said user. The head-mounted display system comprises at least one diffusive optical element, at least one out-coupling optical element, at least one mask comprising at least one mask opening, at least one illumination in-coupling optical element configured to in-couple light from at least one illumination source into a light-guiding component, an image projector configured to in-couple an image and an at least one illumination source is configured to in-couple light into at least one illumination in-coupling optical element, an eyepiece, a curved light-guiding component, a light-guiding component comprising a portion of a frame, and/or two light-guiding components disposed on opposite sides of at least one out-coupling optical element. 1. A head-mounted display system configured to project light to an eye of a user wearing the head-mounted display system to display content in a vision field of said user , said head-mounted display system comprising:a frame configured to be supported on a head of the user;an image projector configured to project an image;at least one illumination source;a light-guiding component, said light-guiding component configured so as to be positioned forward one of the user's eyes when the frame is worn by the user;at least one illumination in-coupling optical element configured to in-couple light from the at least one illumination source into the light-guiding component so as to guide light from the at least one illumination source therein; andat least one diffusive optical element disposed on the light-guiding component so as to be positioned forward one of the user's eyes when the frame is worn by the user, wherein the at least one diffusive optical element is configured to diffusively couple light from the at least one illumination source out of the light-guiding component;wherein ...

SYSTEMS, DEVICES, AND METHODS FOR WAVEGUIDE-BASED EYEBOX EXPANSION IN WEARABLE HEADS-UP DISPLAYS

Systems, devices, and methods for eyebox expansion in wearable heads-up displays (“WHUDs”) are described. The WHUDs described herein each include a projector and an optical waveguide positioned in an optical path between the projector and an eye of the user. For any given light signal from the projector, the optical waveguide receives the light signal at an input coupler and outputs multiple instances or copies of the light signal from multiple discrete, spatially-separated output couplers. The multiple instances or copies of the light signal may be converged by the optical waveguide directly to respective exit pupils at the user's eye or may be routed by the optical waveguide to a holographic combiner in the user's field of view from which the light signals may be converged to respective exit pupils at the user's eye. The optical waveguide employs exit pupil replication to expand the eyebox of the WHUD. 119-. (canceled)20. A wearable heads-up display comprising:an eyeglass lens positioned in a field of view of an eye of a user when the wearable heads-up display is worn on a head of the user;a projector to project light, the projector carried by an arm portion of the wearable heads-up display; and{'claim-text': ['an input coupler configured to couple light from the projector into the optical waveguide;', 'a first output coupler configured to direct a first portion of light to a first exit pupil at or proximate the eye of the user; and', 'a second output coupler configured to direct a second portion of light to a second exit pupil at or proximate the eye of the user.'], '#text': 'an optical waveguide carried by the wearable heads-up display and positioned at least partially within the field of view of the eye of the user when the wearable heads-up display is worn on the head of the user, wherein the optical waveguide comprises:'}21. The wearable heads-up display of claim 20 , wherein:the first output coupler is positioned within the field of view of the eye of the ...

METHODS AND SYSTEM FOR CREATING FOCAL PLANES USING AN ALVAREZ LENS

Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise a lens assembly comprising two transmissive plates, a first of the two transmissive plates comprising a first surface sag based at least in part on a cubic function, and a DOE to direct image information to a user's eye; wherein the DOE is placed in between the two transmissive plates of the lens assembly, and wherein the DOE is encoded with the inverse of the cubic function corresponding to the surface sag of the first transmissive plate; such that a wavefront created by the encoded DOE is compensated by the wavefront created by the first transmissive plate, thereby collimating light rays associated with virtual content delivered to the DOE. 1an image-generating source to provide one or more frames of image data;a light modulator to transmit light associated with the one or more frames of image data;a lens assembly comprising first and second transmissive plates, the first and second transmissive plates each having a first side and a second side that is opposite to the first side, the first side being a plano side, and the second side being a shaped side, the second side of the first transmissive plate comprising a first surface sag based at least in part on a cubic function, and the second side of the second transmissive plate comprising a second surface sag based at least in part on an inverse of the cubic function; anda diffractive optical element (DOE) to receive the light associated with the one or more frames of image data and direct the light to the user's eyes, the DOE being disposed between and adjacent to the first side of the first transmissive plate and the first side of the second transmissive plate, and wherein the DOE is encoded with refractive lens information corresponding to the inverse of the cubic function such that when the DOE is aligned so that the refractive lens information of the DOE cancels out the cubic function ...

PROJECTION DEVICE FOR SMART GLASSES, METHOD FOR DISPLAYING IMAGE INFORMATION WITH THE AID OF A PROJECTION DEVICE, AND CONTROL UNIT

A projection device for smart glasses. The projection device includes an image-generation unit for generating at least one first ray of light representing first image information, and a second ray of light representing second image information. The first ray of light and the second ray of light differ from each other with regard to a beam divergence. In addition, the first image information and the second image information differ from each other with regard to a perceivable image sharpness. Moreover, the projection device includes at least one deflection element, which is configured to display the first image information within a first field of view of an eye using the first ray of light, and to display the second image information within a second field of view of the eye disposed outside the first field of view, using the second ray of light. 115-. (canceled)16. A projection device for smart glasses , comprising:an image-generation unit to generate at least one first ray of light representing first image information, and a second ray of light representing second image information, the first ray of light and the second ray of light differing from each other with regard to a beam divergence, and the first image information and the second image information differing from each other with regard to a perceivable image sharpness; andat least one deflection element to display the first image information within a first field of view of an eye using the first ray of light, and to display the second image information within a second field of view of the eye using the second ray of light, the second field of view being located outside the first field of view.17. The projection device of claim 16 , wherein the image-generation unit is configured to generate the first ray of light and the second ray of light so that the first image information has a greater perceived image sharpness than the second image information claim 16 , the deflection element being configured to at least ...

DYNAMIC FULL THREE DIMENSIONAL DISPLAY

There is provided an optical display system, including a light source, a control unit, and an array of at least two juxtaposed double grating elements, each of the elements comprising a first grating and a second grating, spaced apart at a constant distance from each other, each of the two gratings having at least two edges and comprises at least one sequence of a plurality of lines, wherein the spacing between the lines gradually changes from one edge of the grating to the other edge, and wherein the first grating diffracts a light wave from the light source towards the second grating and is further diffracted by the second grating as an output light wave in a given direction. 166.-. (canceled)67. An optical display system , comprising: a light source;a control unit; andan array of at least two pixels, each of the pixels being a juxtaposed double grating element, comprising a first grating and a second grating spaced apart at a constant distance from each other, each of the two gratings having at least two edges, at least one sequence of a plurality of lines and an apertures,the spacing between the lines gradually changing over the aperture of the gratings,the first grating diffracting a light wave from the light source towards the second grating, the light wave further diffracted by the second grating as an output light wave in a given direction,wherein for each of the pixels the direction of the output light wave from the second grating is separately, dynamically and externally controlled by the control unit.68. The optical display system according to claim 67 , wherein the pixels further comprising a light transmitting substrate having at least two major surfaces located between the first and the second gratings claim 67 , wherein the refractive index of the light transmitting substrate is externally controlled and the direction of the output light wave from the second grating is controlled by changing the refractive index of the substrate.69. The optical ...

DISPLAY APPARATUS

It is an object of the present invention to provide a display apparatus having a configuration and a structure that enable virtual images to be observed by an observer to exhibit high contrast, and enable the observer who uses the display apparatus to safely act in a real environment while reliably recognizing an external environment. A display apparatus of the present invention includes: a frame to be mounted to a head of an observer; an image display apparatus attached to the frame; and a dimming apparatus . The image display apparatus includes an image forming apparatus, and an optical apparatus having a virtual-image forming region in which virtual images are formed. The optical apparatus overlaps with at least a part of the dimming apparatus . When the dimming apparatus operates, a light blocking rate of the dimming apparatus decreases, for example, from an upper region and an outer-side region of a virtual-image-forming-region facing region toward a central portion of the virtual-image-forming-region facing region. 1. A display apparatus , comprising:(A) a frame to be mounted to a head of an observer;(B) an image display apparatus attached to the frame; and(C) a dimming apparatus that adjusts light intensities of external light beams that enter from an outside, (a) an image forming apparatus, and', '(b) an optical apparatus having a virtual-image forming region in which virtual images are formed on a basis of light beams emitted from the image forming apparatus,, 'the image display apparatus including'}the optical apparatus overlapping with at least a part of the dimming apparatus,when the dimming apparatus operates,(i) a light blocking rate of the dimming apparatus decreasing from an upper region and an outer-side region of a virtual-image-forming-region facing region toward a central portion of the virtual-image-forming-region facing region,(ii) the light blocking rate of the dimming apparatus decreasing from a lower region and the outer-side region of the ...

Optical layered composite having two groupings of coating layers and its application in augmented reality

An optical layered composite includes: a substrate having a front face, a back face, a thickness ds between the front face and the back face, and a refractive index ns; and a coating applied to the front face, the coating having two regions, the two regions being a region A and a region B. The region A comprises one or more coating layers, each of which satisfies one or both of the criteria: a thickness below 5 nm; or a refractive index of 1.6 or more. The region B comprises one or more coating layers, each of which satisfies one or both of the criteria: a thickness below 5 nm; or a refractive index below 1.6.

Image Display Device and Optical See-Through Display

The image display device according to the present invention has a display element for displaying an image, and an eyepiece optical system for leading image light from the display element to the pupil of an observer. The eyepiece optical system has a prism and a volume-phase-type holographic optical element, and the holographic optical element is in contact with the prism. The prism surface in contact with the holographic optical element comprises a conical surface, and the prism surface on which the image light from the display element is first incident comprises a conical surface. 1. An image display apparatus , comprising:a display element which displays an image; andan eyepiece optical system which guides image light from the display element to an observer's pupil,whereinthe eyepiece optical system includes:a prism on which the image light is incident; anda volume-phase holographic optical element which diffracts the image light guided inside the prism, the holographic optical element lies in contact with the prism,a prism surface that lies in contact with the holographic optical element is formed of a conic surface, anda prism surface on which the image light from the display element is incident first is formed of a conic surface.2. The image display apparatus of claim 1 , wherein the holographic optical element is of a reflection type.3. The image display apparatus of claim 1 , further comprising: 'wherein the display element modulates light from the illumination optical system to display the image.', 'an illumination optical system which illuminates the display element,'}4. The image display apparatus of claim 1 , wherein of surfaces constituting the prism claim 1 , prism surfaces through which the image light is transmitted are claim 1 , except the prism surface formed of a conic surface claim 1 , formed of flat surfaces.5. The image display apparatus of claim 1 , wherein the display element has a rectangular display surface claim 1 , and a short-side ...

DISPLAY SPECTACLES AND DRIVING METHOD THEREOF

Display spectacles and a driving method thereof are disclosed. The display spectacles include a spectacle frame and two display devices provided on the spectacle frame as spectacle lenses. Each of the display devices includes a backlight, a lower substrate on a light exit side of the backlight, an upper substrate arranged opposite to the lower substrate, a liquid crystal layer located between the upper substrate and the lower substrate, a plurality of electrode structures located between the upper substrate and the lower substrate, and a control unit. During displaying, the electrode structure deflects liquid crystal molecules in the liquid crystal layer corresponding to the electrode structure to form a microprism structure. The control unit adjusts a voltage on the electrode structure, thereby controlling total internal reflection or refraction of the microprism structure for light emitted from the backlight, and the adjustment for display gray scale can thus be realized. 1. Display spectacles: comprising a spectacle frame and two display devices provided on the spectacle frame as spectacle lenses; each of the display devices comprising a backlight , a lower substrate on a light exit side of the backlight , an upper substrate arranged opposite to the lower substrate , a liquid crystal layer located between the upper substrate and the lower substrate , a plurality of electrode structures located between the upper substrate and the lower substrate , and a control unit;wherein during displaying, the electrode structure deflects liquid crystal molecules in the liquid crystal layer corresponding to the electrode structure to form a microprism structure; the control unit adjusts a voltage on the electrode structure, thereby controlling total internal reflection or refraction of the microprism structure for light emitted from the backlight.2. The display spectacles according to claim 1 , wherein several microprism structures constitute one sub-pixel; and a plurality of ...

SENSOR ASSISTED HEAD MOUNTED DISPLAYS FOR WELDING

Sensor assisted head mounted displays for welding are disclosed. Disclosed example head mounted devices include an optical sensor, an augmented reality controller, a graphics processing unit, and a semi-transparent display. The optical sensor collects an image of a weld environment. The augmented reality controller determines a simulated object to be presented in a field of view, a position in the field of view, and a perspective of the simulated object in the field of view. The graphics processing unit renders the simulated object based on the perspective to represent the simulated object being present in the field of view and in the weld environment. The display presents the rendered simulated object within the field of view based on the position. At least a portion of the weld environment is observable through the display and the lens when the display is presenting the rendered simulated object. 1. A welding interface device , comprising: an illuminator to output a radiation at a first wavelength outside of an arc radiation spectrum;', 'a time-of-flight sensor to collect the image of the weld environment at the first wavelength; and', 'a bandpass filter to mitigate light at wavelengths other than the first wavelength;, 'an optical sensor to collect an image of a weld environment comprisingan augmented reality controller to, based on the image of the weld environment and first instructions that correspond to a weld operation in the weld environment, determine a simulated object to be presented in a field of view, a position of the simulated object in the field of view, and a perspective of the simulated object in the field of view;a graphics processing unit to render the simulated object as a three-dimensional stereographic image based on the perspective to represent the simulated object being present in the field of view and in the weld environment; anda semi-transparent display to present the rendered simulated object within the field of view based on the ...

Optical Systems with Light-Expanding Couplers

An electronic device may include a display that generates light for an optical system that redirects the light towards an eye box. The optical system may include a waveguide, a non-diffractive input coupler, a cross coupler, and an output coupler. The cross coupler may expand the light in a first direction. The cross coupler may perform an even number of diffractions on the light and may couple the light back into the waveguide at an angle suitable for total internal reflection. The output coupler may expand the light in a second direction while coupling the light out of the waveguide. The cross coupler may include surface relief gratings or holographic gratings embedded within the waveguide or formed in a separate substrate. The optical system may direct the light towards the eye box without chromatic dispersion and while supporting an expanded field of view and optical bandwidth. 1. An optical system that redirects light produced by a display module towards an eye box , the optical system comprising:a waveguide;a non-diffractive input coupler configured to couple the light produced the display module into the waveguide;a cross coupler on the waveguide, wherein the cross coupler is configured to perform an even number of diffractions on the light coupled into the waveguide by the non-diffractive input coupler, wherein the even number of diffractions are configured to expand the light in a first direction, and wherein the waveguide is configured to propagate the light expanded in the first direction via total internal reflection; andan output coupler on the waveguide, wherein the output coupler is configured to couple the light expanded in the first direction by the cross coupler out of the waveguide while expanding the light in a second direction that is different from the first direction.2. The optical system defined in claim 1 , wherein the cross coupler comprises a surface relief grating.3. The optical system defined in claim 2 , wherein the surface relief ...

LIGHT GUIDE DISPLAY ASSEMBLY FOR PROVIDING EXPANDED FIELD OF VIEW

A device includes one or more light guides. The device also includes a first in-coupling element configured to couple a first light having a first input field of view (“FOV”) into a first light guide, and a second in-coupling element configured to couple a second light having a second input FOV into a second light guide. The device also includes a first out-coupling element configured to couple the first light out of the first light guide as a first output light having a first output FOV, and a second out-coupling element configured to couple the second light out of the second light guide as a second output light having a second output FOV substantially non-overlapping with the first output FOV. A combination of the first output FOV and the second output FOV is larger than at least one of the first output FOV or the second output FOV.

VIRTUAL IMAGE DISPLAY DEVICE AND OPTICAL UNIT

A virtual image display device includes an image generation device, and a concave transmissive mirror configured to reflect image light emitted from the image generation device. A light superimposer is provided on an external side of a partial reflective film provided in the concave transmissive mirror, the light superimposer being configured to superimpose additional light in a visible range on image light transmitted through the partial reflective film.

HOLOGRAPHIC DISPLAY APPARATUS AND OPERATING METHOD THEREOF

A holographic display apparatus and a holographic display method are provided. The holographic display apparatus determines a representative depth from 3D image data; calculates a computer generated hologram (CGH) corresponding to the representative depth on the 3D image data; obtains the modulated CGH by modulating a phase of the CGH to increase an eye box; modulates a light according to the modulated CGH and generates a hologram image; and forms the generated hologram image at the representative depth.

TRANSPARENT SOUND DAMPENING PROJECTION SCREEN

The invention generally provides a transparent projection screen material with sound dampening properties and methods for using a screen to manipulate light and sound. Methods and materials of the invention can improve live sound and sound recordings by inhibiting ambient sound from reaching listeners or microphones and reducing feedback. 1. An audiovisual display system comprising:a substantially flat screen comprising a translucent mesh defining an obverse surface and a reverse surface;an object disposed proximal to the reverse surface and visible through the screen to a person viewing the obverse surface;a projector configured to project an image onto the obverse surface;a speaker configured to transmit a sound wave towards the reverse surface; anda computer device comprising a tangible, non-transitory memory coupled to a processor, the computer device operably coupled to the speaker and the projector.2. The system of claim 1 , further comprising a microphone and further wherein the obverse surface faces the microphone.3. The system of claim 1 , wherein the mesh comprises synthetic fibers.4. The system of claim 3 , wherein the synthetic fibers have a substantially triangular cross-section.5. The system of claim 4 , wherein the synthetic fibers have a maximum cross-sectional dimension of about 100 microns.6. The system of claim 5 , wherein the synthetic fibers have a maximum cross-sectional dimension of about 20 microns.7. The system of claim 3 , wherein parallel ones of the synthetic fibers are spaced away from one another by a minimum spacing distance that is about 50 microns.8. The system of claim 7 , wherein the minimum spacing distance is about 100 microns.9. The system of claim 8 , wherein the minimum spacing distance is about 450 microns.10. The system of claim 3 , wherein some of the synthetic fibers are substantially perpendicular to others of the synthetic fibers.11. The system of claim 1 , wherein the obverse surface comprises a gray color.12. The ...

MULTIPLEXED HOLOGRAM TILING IN A WAVEGUIDE DISPLAY

Embodiments related near-eye display devices having angularly multiplexed holograms are disclosed. One disclosed embodiment provides a near-eye display device including an image source, a waveguide, and a controller. The waveguide is configured to propagate light received the image source to a user of the near-eye display device, and includes a holographic grating comprising a plurality of angularly multiplexed holograms. The controller is configured to control display of an image via the image source. 1. A method of manufacturing a waveguide for a near-eye display device , the method comprising:forming a first holographic recording by reproducing a master hologram at a light coupling interface of the waveguide via laser light directed at a first angle relative to the master hologram;forming a second holographic recording by reproducing the master hologram at the light coupling interface of the waveguide in spatially overlapping relation to the first holographic recording via laser light directed at a second, different angle relative to the master hologram.2. The method of claim 1 , further comprising positioning a mask between a laser providing the laser light and the master hologram claim 1 , wherein openings of the mask are positioned in a same location during the forming of the first holographic recording and the forming of the second holographic recording.3. The method of claim 1 , further comprising forming one or more additional holographic recordings claim 1 , each additional holographic recording being recorded by laser beams having at a different incident angle relative to other holographic recordings.4. The method of claim 1 , wherein the light coupling interface is an output grating claim 1 , and the method further comprising forming an input grating comprising angularly multiplexed holograms.5. The method of claim 4 , wherein the output grating is a first grating and the input grating is a second grating claim 4 , the method further comprising forming a ...

Optical system

The invention relates to an optical system for generating a two- or three-dimensional image, the system comprising: a projection apparatus for optically transmitting image information to at least one user; an eye detection apparatus; and an imaging apparatus for imaging the image information of the projection device, so that the user can perceive said image information. The imaging apparatus comprises at least one optical hologram set, at least one of which sets is designed to be angle-amplifying. Using the projection apparatus, at least one virtual optical point is generated, or a plurality of optical points are generated such that they form at least one optical wave front, each virtual optical point being generated by the superposition of at least two coherent light waves in the region of the at least one angle-amplifying optical hologram set, and the at least one optical hologram set is used to image the at least one virtual point or the at least one optical wavefront onto the eyes of the at least one user. The respective movements of the eyes of the at least one user can be detected by the eye detection apparatus and the latter cooperates with the projection apparatus in such a way that the amount of image information is adapted according to the respective alignment of the eye and/or position of the eye in different perception regions of each eye.

OPTICAL WINDOW SYSTEM AND SEE-THROUGH TYPE DISPLAY APPARATUS INCLUDING THE SAME

An optical window system includes: a path conversion member configured to change a path of light of a first image from a first direction to a second direction, the path conversion member being translucent to light incident in the second direction; and a focusing member configured to focus the light of the first image in the second direction. Moreover, the path conversion member is configured to occupy a space according to an angle, defined by a first length of the path conversion member in the first direction and a second length of the path conversion member in the second direction, satisfying a predetermined condition, thereby reducing a system thickness and providing a wide field of view. 1. An optical window system comprising:a path conversion member configured to change a path of light of a first image from a first direction to a second direction, the path conversion member being translucent to light incident in the second direction; anda focusing member configured to focus the light of the first image in the second direction,wherein the path conversion member is configured to occupy a space according to an angle, defined by a first length of the path conversion member in the first direction and a second length of the path conversion member in the second direction, satisfying a predetermined condition.2. The optical window system of claim 1 , wherein the angle defined by tan(the second length/the first length) is less than 45°.3. The optical window system of claim 1 , wherein the angle defined by tan(the second length/the first length) satisfies the following condition:{'br': None, '5°≤the angle≤30°'}4. The optical window system of claim 1 , wherein the focusing member comprises a translucent concave mirror claim 1 , andthe path conversion member is placed between the translucent concave mirror and an observer.5. The optical window system of claim 4 , wherein the path conversion member comprises a first hologram optical element having a hologram pattern that is ...

IMAGE DISPLAY DEVICE WITH OPTICAL SYSTEMS TO GUIDE LIGHT TO A PUPIL

An image display device with which it is possible to visually recognize an image while securing the see-through property regardless of eye movements and changes in interpupillary distance, with which it is possible to display a large-size image with high quality, and which is small, has excellent wearability, and has an excellent external appearance. 1. An image display device comprising:a light source optical system emitting a light;a mirror reflecting the light emitted from the light source optical system;a light scanning device scanning in two-dimensionally the light reflected by the mirror;a pupil magnifying optical system magnifying a beam diameter of the light scanned by the light scanning device;a correcting optical system correcting the light magnified by the pupil magnifying optical system; anda deflecting optical system deflecting the light corrected by the correcting optical system to a position of an exit pupil, and the deflecting optical system transmitting a portion of external light.2. The image display device according to claim 1 ,wherein the light scanning device is MEMS mirror.3. The image display device according to claim 1 ,wherein the correcting optical system correcting a shape of the light magnified by the pupil magnifying optical system.4. The image display device according to claim 1 ,wherein the correcting optical system correcting a aberration of the light magnified by the pupil magnifying optical system.5. The image display device according to claim 1 ,wherein the correcting optical system correcting a distortion of the light magnified by the pupil magnifying optical system.6. The image display device according to claim 1 ,wherein the light having a intermediate image on an optical pass between the correcting optical system and the deflecting optical system.7. The image display device according to claim 1 ,wherein the deflecting optical system is formed of a holographic mirror.8. The image display device according to claim 1 ,wherein the ...

Dispersion compensation in volume bragg grating-based waveguide display

A waveguide display includes a substrate transparent to visible light, a coupler configured to couple display light into the substrate as guided wave in the substrate, and a first VBG and a second VBG coupled to the substrate. The coupler includes a diffractive coupler, a refractive coupler, or a reflective coupler. The first VBG is configured to diffract, at a first region of the first VBG, the display light in the substrate to a first direction, and diffract, at two or more regions of the first VBG along the first direction, the display light from the first region to a second direction towards the second VBG. The second VBG is configured to couple the display light from each of the two or more regions of the first VBG out of the substrate at two or more regions of the second VBG along the second direction.