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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 3197. Отображено 100.

01-03-2012 дата публикации

Digital hologram image display device

Номер: US20120050459A1

Автор: Guensik Lee, Minsung YOON

Принадлежит: LG Display Co Ltd

The present disclosure relates to a digital hologram display device in which the 0th diffraction component is removed for optimizing the reproduction and replay of three-dimensional hologram video data. The present disclosure suggests a digital hologram image display device including a pattern generator generating holography interference patterns; a spatial light modulator receiving the holography interference patterns from the pattern generator and representing the holography interference patterns; a light source positioning at one side of the spatial light modulator and illuminating a reference beam to the spatial light modulator; an optical device controlling the reference beam to be collimated onto the entire surface of the spatial light modulator; and a diffusion sheet disposed between the light source and the spatial light modulator.

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Номер записи: 1

12-04-2012 дата публикации

Apparatus and method for holography 3-dimensional display

Номер: US20120086994A1

Автор: Hong-seok Lee, Hoon Song, Jung-mok Bae, Kyu-hwan Choi, Seung-hoon Han, Yoon-sun Choi

Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus includes a recording light source configured to emit recording beams, an electrically addressable spatial light modulator (EASLM) configured to time sequentially modulate the recording beams emitted from the recording light source according to hologram information corresponding to a 3-dimensional image spatially divided into a plurality of portions, an optically addressable spatial light modulator (OASLM) configured to include a plurality of regions corresponding to the plurality of the divided portions of the 3-dimensional image and images on a region corresponding to the portions using the modulated recording beams to form a hologram, a scanning optical unit configured to reproduce the hologram formed by the recording beams serially modulated by the EASLM on a reduced scale and transmit the hologram to the regions of the OASLM corresponding to the portions, and a reproducing light source configured to produce a surface light and emit the surface light to the OASLM.

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Номер записи: 2

03-05-2012 дата публикации

Holographic Apparatus and Method

Номер: US20120105580A1

Автор: Adrian James Cable, Edward Buckley

Принадлежит: Cambridge University Technical Services Ltd CUTS

The invention relates to a method of and apparatus for displaying a holographically generated video image having plural video frames. For each period there is provided a respective sequential plurality of holograms. The holograms of the plural video frames are displayed for viewing the replay field thereof, and the noise variance of each frame is perceived as attenuated by averaging across said plurality of holograms.

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Номер записи: 3

19-07-2012 дата публикации

Multiple laminar flow-based particle and cellular separation with laser steering

Номер: US20120183947A1

Автор: Amy Anderson, Daniel Mueth, Jessica Shireman, Joseph Plewa, Lewis Gruber, Neil Harris Rosenbaum

Принадлежит: Arryx Inc

The invention provides a method, apparatus and system for separating cellular components, and can be combined with holographic optical trapping manipulation or other forms of optical tweezing. One exemplary method includes providing a first flow having a plurality of components; providing a second flow; contacting the first flow with the second flow to provide a first separation region; and differentially sedimenting a first cellular component of the plurality of components into the second flow while concurrently maintaining a second cellular component of the plurality of components in the first flow. The second flow having the first cellular component is then differentially removed from the first flow having the second cellular component. Holographic optical traps may also be utilized in conjunction with the various flows to move selected components from one flow to another, as part of or in addition to a separation stage.

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Номер записи: 4

08-11-2012 дата публикации

Optical solenoid beams

Номер: US20120281263A1

Автор: David G. Grier, Sang-hyuk Lee, Yohai Roichman

Принадлежит: New York University NYU

Optical solenoid beams, diffractionless solutions of the Helmholtz equation whose diffraction-limited in-plane intensity peak spirals around the optical axis, and whose wavefronts carry an independent helical pitch. The solenoid beams have the noteworthy property of being able to exert forces on illuminated objects that are directed opposite to the direction of the light's propagation. Optical solenoid beams therefore act as true tractor beams that are capable of transporting material back toward their source.

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Номер записи: 5

15-11-2012 дата публикации

Displaying 3D Imaging Sensor Data on a Hogel Light Modulator

Номер: US20120287490A1

Автор: Michael A. Klug, Michael E. Weiblen, Thomas L. Bumett, III

Принадлежит: Zebra Imaging Inc

Methods and systems for displaying 3D imaging data, including providing 3D imaging sensor data, processing the 3D imaging sensor data, the processing being configured to modify the 3D imaging sensor data into a modified format suitable for a hogel light modulator, and providing the modified 3D imaging data to the hogel light modulator.

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Номер записи: 6

29-11-2012 дата публикации

Floating virtual hologram display apparatus

Номер: US20120300274A1

Автор: Chih-Hsiung Lin

Принадлежит: Era Optoelectronics Inc

A floating virtual hologram display apparatus, includes a scanning mechanism, a diffractive optical element and a reconstruction light source thereof. After a light beam emitted from the reconstruction light source passes through the diffractive optical element (DOE), and is diffracted by the DOE, a hologram beam spot will be displayed in front of the diffractive optical element; a floating virtual hologram is displayed after a position of the hologram beam spot is scanned and altered by the scanning mechanism; the floating virtual hologram being allowed to display a variable virtual image by controlling the reconstruction light source to emit bright, dark and different color of light corresponding to an image through the image signal processing unit.

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Номер записи: 7

21-03-2013 дата публикации

Laser machining device and laser machining method

Номер: US20130068742A1

Автор: Haruyasu Ito, Naoya Matsumoto, Norihiro Fukuchi, Takashi Inoue, Yuu Takiguchi

Принадлежит: Hamamatsu Photonics KK

A laser machining device 1 comprises a laser light source 10 , a spatial light modulator 20 , a controller 22 , a converging optical system 30 , and a shielding member 40 . The phase-modulating spatial light modulator 20 inputs a laser beam outputted from the laser light source 10 , displays a hologram modulating a phase of the laser beam at each of a plurality of pixels arranged two-dimensionally, and outputs the phase-modulated laser beam. The controller 22 causes the spatial light modulator 20 to display a plurality of holograms sequentially, lets the converging optical system 30 converge the laser beam outputted from the spatial light modulator 20 at converging positions having a fixed number of M, selectively places N converging positions out of the M converging positions into a machining region 91 , and machines an object to be machined 90.

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Номер записи: 8

25-04-2013 дата публикации

Display device

Номер: US20130100511A1

Автор: Kakuya Yamamoto, Keiji Sugiyama, Kenichi Kasazumi

Принадлежит: Panasonic Corp

A display device ( 1 ) includes a light source ( 101 ) which outputs laser light, an illumination optical system ( 102 ) which emits the laser light as illumination light, a spatial modulation element ( 103 ) which diffracts the illumination light by displaying a diffraction pattern, and a wearing section ( 111 ) for wearing on a user's head. A positional relationship between the spatial modulation element ( 103 ) and an expected eye position ( 191 a ), which is expected to be a position of an eye ( 190 ) of the user, is fixed in a state where the wearing section ( 111 ) is worn on the user's head. The spatial modulation element ( 103 ) displays, as the diffraction pattern, a diffraction pattern by which a fictive image is displayed to the user due to diffracted light, which has been diffracted by the diffraction pattern, reaching the expected eye position ( 191 a ).

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Номер записи: 9

16-05-2013 дата публикации

SPATIAL LIGHT MODULATING PANEL USING TRANSMITTIVE LIQUID CRYSTAL DISPLAY PANEL AND 3D DISPLAY DEVICE USING THE SAME

Номер: US20130120817A1

Автор: KIM Sunwoo, SHIN Minyoung, YOON Minsung

Принадлежит: LG DISPLAY CO., LTD.

The present disclosure relates to a spatial light modulating panel using a transitive liquid crystal display panel and a three-dimensional display device using the same. The present disclosure suggests a spatial light modulator comprising: a plurality of pixels arrayed in a matrix manner; and a liquid crystal layer configured to modulate phase of an incident light passing through the each pixel, respectively. The spatial light modulator and the 3D display using the same according to the present disclosure provides thin flat type display system having the easy and simple structure and the low manufacturing cost. 1. A spatial light modulating panel comprising:a plurality of pixels arrayed in a matrix manner; anda liquid crystal layer configured to modulate a phase of an incident light passing through the each pixel, respectively.2. The spatial light modulating panel according to claim 1 , further comprising:an upper substrate and a lower substrate defining the pixels arrayed in the matrix manner and joining each other with the liquid crystal layer therebetween;an upper electrode disposed at each pixel and formed an inner side of the upper substrate; anda lower electrode disposed at each pixel and formed an inner side of the lower substrate.3. The spatial light modulating panel according to claim 1 , wherein the liquid crystal layer includes an ECB mode liquid crystal material having a thickness for changing the phase of the incident light passing the each pixel from 0 to 2π according to the birefringence of the liquid crystal layer.4. The spatial light modulating panel according to claim 1 , wherein the incident light is linearly polarized parallel to an initial alignment direction of the liquid crystal layer and propagated to the pixels in a collimated condition.5. A holography 3D display comprising:a back light unit providing a linearly polarized back light to one direction; anda spatial light modulating panel disposed at the one direction, including a plurality of ...

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Номер записи: 10

13-06-2013 дата публикации

Holographic display

Номер: US20130148179A1

Автор: Ilya Blayvas, Ron Fridental

Принадлежит: Broadcom Corp

Disclosed are various embodiments of a holographic display device that may reproduce dynamic color holograms and holographic video. A holographic display device includes a processor, a memory, a display screen, and one or more monochromatic light sources. The memory stores a holographic interference pattern that encodes a three-dimensional scene. The display screen is configured by the processor to render the holographic interference pattern. The monochromatic light sources are configured to illuminate the display screen so as to reconstruct a wavefront reflected by the three-dimensional scene.

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Номер записи: 11

01-08-2013 дата публикации

Full Color Phase-Only Spatial Light Modulator for Holographic Video Display System

Номер: US20130194651A1

Автор: Arvind K. Srivastava, Fahri Yaras

Принадлежит: Light Field Corp

Full-color phase-only spatial light modulators (SLM) are proposed for modulating phase of the light. Proposed SLMs are low-power electrically actuated surface micromachined MEMS device with high reflectivity, high switching speed, high diffraction efficiency, high fill-factor and low surface adhesion to the substrate.

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Номер записи: 12

15-08-2013 дата публикации

Method for processing interaction between user and hologram using volumetric data type object wave field

Номер: US20130208010A1

Автор: Seung Taik Oh, Wook Ho SON

Принадлежит: Electronics and Telecommunications Research Institute ETRI

Disclosed is a method for processing interaction between a user and hologram using a volumetric data type object wave field. A method for processing interaction between a user and hologram for user's action using a volumetric data type object wave field includes: capturing user action on the holographic image of the object and solving collision between user and object; computing the updated position and rotation of the object by time integration of rigid body equation in collision; calculating the relative position and rotation of the hologram plane with respect to local object coordinates; transforming the hologram in the pre-computed volumetric object wave field grid according to the relative position and rotation of the hologram plane in local object coordinates and reading the object wave fields at all the pixels of the transformed hologram plane in order to generate a new hologram for the transformed object caused by user action.

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Номер записи: 13

22-08-2013 дата публикации

HOLOGRAM DISPLAY MODULE AND STEREOSCOPIC DISPLAY DEVICE

Номер: US20130215484A1

Автор: Kurokawa Takashi, Takaki Yasuhiro

Принадлежит: Tokyo University of Agriculture and Technology National University Corporation

A hologram display module that a large number of light source elements and a large number of spatial light modulation elements overlapped with the light source elements are arranged: wherein the light source element is arranged quadratically in area of predetermined height width to comprise each of scanline forming a line in height direction; openings of the light source elements are placed each other in distinct position horizontally; the light source elements produce lights that are coherence spatially each other, respectively; the spatial light modulation element spatially modulates light from the light source element for independence, respectively. 1. hologram display module that a large number of light source elements and a large number of spatial light modulation elements overlapped with the light source elements are arranged:whereinthe light source element is arranged quadratically in area of predetermined height width to comprise each of scanline forming a line in height direction;openings of the light source elements are placed each other in distinct position horizontally;the light source elements produce lights that are coherence spatially each other, respectively;the spatial light modulation element spatially modulates light from the light source element for independence, respectively.2. The hologram display module according to comprising:an array comprising a plurality of light source elements generating light coherent spatially each other, andan array comprising a plurality of spatial light modulation elements to modulate spatially lights from a plurality of light source elements for independence, respectively;wherein{'b': 2', '1, 'a scanline is comprised of a plurality of lines placed predetermined number (N) in coarser egular interval (d) vertically sequentially, and each line is comprised of a plurality of light source elements located in regular interval (d) horizontally,'}{'b': '1', 'the light source elements of a certain line and the light source ...

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Номер записи: 14

26-09-2013 дата публикации

Analytic method for computing video holograms in real time

Номер: US20130250049A1

Автор: Alexander Schwerdtner

Принадлежит: SeeReal Technologies SA

An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. The visibility region, together with each object point of the scene to be reconstructed, defines a subhologram and the whole hologram is generated from a superposition of subholograms, wherein the complex hologram values of a subhologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.

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Номер записи: 15

17-10-2013 дата публикации

Holographic display systems, methods and devices

Номер: US20130271800A1

Автор: Kapil Kanugo

Принадлежит: Intel Corp

Systems, devices and methods are described including providing infrared (IR) laser radiation to a Digital Micromirror Device (DMD) array and using the DMD array to spatially modulate the IR laser radiation. The spatially modulated IR laser radiation may then be projected to form a voxel array where each voxel of the array represents to a volume of air wherein the IR laser radiation has been focused sufficiently to cause air to ionize. The voxel array may then be spatially rotated.

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Номер записи: 16

05-12-2013 дата публикации

Light modulation device for a display

Номер: US20130321899A1

Автор: Ralf Häussler

Принадлежит: SeeReal Technologies SA

A display comprising an observer window, which in 3D and/or 2D representation mode of a 3D scene can be adapted to changing eye positions. Several observers can use the display simultaneously. The display includes a light modulation device having an actuatable diffraction unit and a controllable spatial light modulator, in which a 3D scene is coded in an actuatable manner, and a control unit. An observer window can be generated using coherent light beams on alternating eye positions. The diffraction unit includes at least electrodes and a controllable material into which a prism and/or lens function and/or scatter function can be written as a diffraction grating with a phase progression in an at least one-dimensionally controllable manner.

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Номер записи: 17

19-12-2013 дата публикации

SPATIAL LIGHT MODULATOR AND HOLOGRAPHIC 3D IMAGE DISPLAY INCLUDING THE SAME

Номер: US20130335795A1

Автор: CHOI Kyu-hwan, Lee Hong-seok, SONG Hoon, Sung Gee-young, WON Kang-hee

Принадлежит:

Provided is a complex spatial light modulator and a holographic 3D image display including the complex spatial light modulator. The complex spatial light modulator includes a spatial light modulator for modulating a phase or an amplitude of light, a pair of lens arrays, and a grating disposed between the pair of lens arrays. Accordingly, the phase and the amplitude of light may be modulated simultaneously. 1. A complex spatial light modulator comprising:a spatial light modulator for modulating a phase or an amplitude of light;a first lens array to receive light emitted from the spatial light modulator;a grating for diffracting light transmitted through the first lens array; anda second lens array for transmitting the light diffracted by the grating.2. The complex spatial light modulator of claim 1 , wherein the grating is located at a focal length of the first lens array.3. The complex spatial light modulator of claim 1 , wherein a focal length of the first lens array and a focal length of the second lens array are equal to each other.4. The complex spatial light modulator of claim 1 , wherein the first lens array comprises a focal length that is an integer times longer than a focal length of the second lens array.5. The complex spatial light modulator of claim 1 , wherein a lens surface of the first lens array faces the spatial light modulator.6. The complex spatial light modulator of claim 1 , wherein the first lens array comprises a plurality of lens cells claim 1 , and each lens cell comprises a width that is the same as a pitch of n pixels (where n is a natural number).7. The complex spatial light modulator of claim 6 , wherein each of the plurality of lens cells in the first lens array faces the n pixels of the spatial light modulator in a longitudinal-sectional direction of the first lens array.8. The complex spatial light modulator of claim 1 , wherein the spatial light modulator comprises an optical electrical device that has a refractive index that changes ...

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Номер записи: 18

26-12-2013 дата публикации

Light modulator having a switchable volume grating

Номер: US20130342887A1

Автор: Gerald Fuetterer, Norbert Leister

Принадлежит: SeeReal Technologies SA

Spatial light modulator configured as a periodic structure of polymer grating layers arranged essentially at equal distances and intermediate spaces to form a periodic grating structure. The surfaces bounding the periodic grating structure have electrodes influencing the refractive index of the active optical medium by an electric field. The electrodes have a pixelated arrangement and can be driven independently of each other with an electrical voltage. The orientation layer thickness and grating period of the periodic grating structure are configured so that they do not correspond to the Bragg condition for the light from at least one light source, and so that for light from the at least one light source incident on the spatial light modulator the light fraction deviated owing to Bragg diffraction is less than the undeviated transmitted light fraction.

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Номер записи: 19

02-01-2014 дата публикации

Input device with three-dimensional image display

Номер: US20140002366A1

Автор: Finn Pedersen, Jesper GLÜCKSTAD

Принадлежит: Danmarks Tekniskie Universitet

The present invention relates to an input device ( 2 ), such as a keyboard, comprising a plurality of activation parts ( 4 ) for depression, at least one registration part ( 6 ) for individual registration of depression of activation parts, and at least one image displaying part ( 8 ), where depression of the activation parts ( 4 ) provides tactile feedback to a user. The at least one image displaying part ( 8 ) is configured for displaying a label of an activation part ( 4 ) as a three-dimensional label.

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Номер записи: 20

06-02-2014 дата публикации

Spatial light modulation device and spatial light modulation method

Номер: US20140036180A1

Автор: Naoya Matsumoto, Tomoko Otsu, Yuu Takiguchi

Принадлежит: Hamamatsu Photonics KK

A spatial light modulation device includes a phase-modulation type spatial light modulator, a temperature sensor detecting a temperature of the spatial light modulator, and a control unit providing a drive signal to the spatial light modulator. The control unit has a storage unit. The storage unit stores N correction patterns created so as to correspond to N (N is an integer not less than 2) temperature values of the spatial light modulator in order to correct phase distortion of the spatial light modulator. The control unit selects one correction pattern according to a temperature value of the spatial light modulator, and generates the drive signal based on a phase pattern created by adding the one correction pattern to a desired phase pattern. Thereby, it becomes possible to suppress phase distortion according to a temperature change while suppressing a delay in operation.

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Номер записи: 21

06-02-2014 дата публикации

APPARATUS AND METHODS FOR HOLOGRAPHIC DISPLAY

Номер: US20140036329A1

Автор: Kang Hoonjong, Yaras Fahri

Принадлежит:

The present invention relates to a holographic display and more particularly to an apparatus and methods for a curved electro-holographic display. The apparatus mainly comprises; at least one light source for providing lights, at least one axially symmetric mirror for reflecting the fights coming from light source, at least one spatial light modulation system consists of one or more than one spatial light modulators for modulating lights reflecting from the axially symmetric mirror and forming a desired optical reconstruction above the axially symmetric mirror by reflecting the lights which is seen from a viewing zone by the user. 1. An apparatus for holographic display comprising;at least one light source for providing a source light beam and characterized byat least one axially symmetric mirror for reflecting the source light beam,a spatial light modulation system having one or more than one spatial light modulators for modulating light reflecting from the axially symmetric mirror and forming a desired optical reconstruction above the axially symmetric mirror, wherein the one or more than one spatial light modulators of the spatial light modulation system are in a configuration that has a central axis, and wherein the central axis is substantially collinear with the axis of symmetry of the axially symmetric mirror.2. The apparatus according to claim 1 , wherein the spatial light modulation system is configured in accordance with a holographic fringe pattern configuration claim 1 , wherein the holographic fringe pattern configuration comprises a plurality of holographic fringe patterns claim 1 , wherein at least one of the holographic fringe patterns is dynamically modified and wherein each of the plurality of holographic fringe patterns is associated with a corresponding planar spatial light modulator from among the one or more than one planar spatial light modulators of the spatial modulation system.3. The apparatus according to claim 1 , wherein the one or more ...

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Номер записи: 22

13-03-2014 дата публикации

Augmented reality information detail

Номер: US20140071163A1

Автор: Nicholas KAMUDA, Peter Tobias Kinnebrew

Принадлежит: Individual

A holographic object presentation system and related methods for presenting a holographic object having a selective information detail level are provided. In one example, a holographic object presentation program may receive user behavior information and physical environment information. Using one or more of the user behavior information and the physical environment information, the program may adjust the selective information detail level of the holographic object to an adjusted information detail level. The program may then provide the holographic object at the adjusted information detail level to an augmented reality display program for display on a display device.

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Номер записи: 23

13-03-2014 дата публикации

Apparatus and method for adjusting holographic image

Номер: US20140071506A1

Автор: Bho Ram Lee, Hyun Jeong Lee, Joon Ah Park, Seung Ju Han, Soo Chul Lim

Принадлежит: SAMSUNG ELECTRONICS CO LTD

A holographic object processing apparatus and method are provided. The holographic object processing apparatus may include a display device to output a holographic object, a database (DB) to store change information of the holographic object according to a distance between a control object and the holographic object, a distance measurement sensor to measure the distance between the control object and the holographic object, and a processing unit to extract change information corresponding to the measured distance from the DB and change the holographic object based on the extracted change information. The display device may output the changed holographic object.

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Номер записи: 24

27-03-2014 дата публикации

Method and Device for 3-D Display Based on Random Constructive Interference

Номер: US20140085427A1

Автор: Zhiyang Li

Принадлежит: Individual

The present invention relates to a method and an apparatus for 3-D display based on random constructive interference. It produces a number of discrete secondary light sources by using an amplitude-phase-modulator-array, which helps to create 3-D images by means of constructive interference. Next it employs a random-secondary-light-source-generator-array to shift the position of each secondary light source to a random place, eliminating multiple images due to high order diffraction. It could be constructed with low resolution liquid crystal screens to realize large size real-time color 3-D display, which could widely be applied to 3-D computer or TV screens, 3-D human-machine interaction, machine vision, and so on.

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Номер записи: 25

07-01-2016 дата публикации

PROJECTION DISPLAY AND METHOD FOR DISPLAYING AT LEAST ONE OF TWO-DIMENSIONAL AND THREE-DIMENSIONAL SCENE OR OF CONTENT

Номер: US20160004219A1

Автор: FUETTERER Gerald, Kroll Bo, Leister Norbert, STOLLE Hagen

Принадлежит:

A projection device is provided for displaying at least one of a two-dimensional and three-dimensional scene or of content. The projection device comprises an illumination device, at least two spatial light modulator devices and an optical system. The illumination device comprises at least one light source for generating a holographic illumination. One of said spatial light modulator devices is designed as spatial light modulator device modulating at least the phase of the light for the holographical generation of illumination patterns. This spatial light modulator device as first spatial light modulator device is followed by a second spatial light modulator device. The optical system is disposed to illuminate the second spatial light modulator device with a predefinable light distribution generated by the first spatial light modulator device. 1. A projection device for displaying at least one of a two-dimensional and three-dimensional scene or of content comprising:An illumination device comprising at least one light source for generating a holographic illumination,At least two spatial light modulator devices, where one of said spatial light modulator devices is designed as spatial light modulator device modulating at least the phase of the light for the holographical generation of illumination patterns, said spatial light modulator device as first spatial light modulator device is followed by a second spatial light modulator device,An optical system disposed to illuminate the second spatial light modulator device with a predefinable light distribution generated by the first spatial light modulator device.2. The projection device according to claim 1 , wherein the optical system comprising at least one imaging element.3. The projection device according to claim 1 , wherein the optical system is provided close to or directly at the position of the first spatial light modulator device.4. The projection device according to claim 1 , wherein the second spatial light ...

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Номер записи: 26

07-01-2016 дата публикации

HOLOGRAPHIC PROJECTION DEVICE FOR THE ENLARGEMENT OF A VISIBILITY REGION

Номер: US20160004220A1

Автор: RENAUD-GOUD Philippe

Принадлежит:

A holographic projection apparatus and a method for magnifying a virtual visibility region, for observing a reconstructed scene with at least one light modulation device and with at least one light source having sufficiently coherent light for generating a wavefront of a scene that is coded in the light modulation device. By means of imaging the wavefront into a viewer plane, it is possible to generate the virtual visibility region for observing the reconstructed scene. The virtual visibility region has at least two virtual viewer windows. In this case, the virtual viewer windows are dimensioned such that the reconstructed scene can always be observed without tracking of the viewer windows upon movement of a viewer in the viewer plane. 1. A method for an enlargement of a virtual visibility region for watching a reconstructed scene , comprising:emitting sufficiently coherent light from at least one light source so as to generate a wave front of the scene being encoded on at least one light modulator device; andgenerating a virtual visibility region for watching the reconstructed scene by imaging the wave front into an observer plane, where the virtual visibility region comprises at least two virtual observer windows, which are dimensioned such that the reconstructed scene is watchable without tracking the observer windows if an observer moves in the observer plane, and wherein the at least two virtual observer windows are generated in the virtual visibility region by multiplexing in order to enlarge the virtual visibility region.2. The method according to claim 1 , wherein the visibility region is reproduced using temporal multiplexing in order to enable multiple observers to watch the reconstructed scene.3. The method according to claim 1 , wherein in order to enable multiple observers to watch the reconstructed scene claim 1 , the virtual visibility region is reproduced in at least one observer plane.4. The method according to claim 1 , wherein the visibility ...

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Номер записи: 27

04-01-2018 дата публикации

NEAR-TO-EYE DISPLAY DEVICE WITH VARIABLE RESOLUTION

Номер: US20180003962A1

Автор: Ulusoy Erdem, Urey Hakan

Принадлежит:

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 ...

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Номер записи: 28

04-01-2018 дата публикации

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

Номер: US20180003981A1

Автор: Hakan Urey

Принадлежит: Cy Vision Inc

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.

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Номер записи: 29

07-01-2021 дата публикации

Display device, in particular a head-mounted display, based on temporal and spatial multiplexing of hologram tiles

Номер: US20210003843A1

Автор: Gerald FÜTTERER

Принадлежит: SeeReal Technologies SA

The invention relates to a display device, in particular a head-mounted display or hocular, having a spatial light modulator and a controllable light-deflecting device for generating a multiple image of the spatial light modulator, which consists of segments, the multiple image being produced at least with a predefinable number of segments which determines the size of a visible area within which a 3D-scene holographically encoded in the spatial light modulator can be reconstructed for observation by an eye of an observer.

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Номер записи: 30

07-01-2021 дата публикации

TILEABLE, COPLANAR, FLAT-PANEL 3-D DISPLAY WITH TACTILE AND AUDIO INTERFACES

Номер: US20210003966A1

Автор: Smalley Daniel

Принадлежит:

A method and system for a scalable multi-sense user experience are disclosed. A three-dimensional (“3-D”) display is disposed behind a slit plane comprising slits and ultrasonic transducers. Light from the 3-D display passes through the slits in the slit plane to generate a 3-D image. The ultrasonic transducers on the front of the slit plane, i.e., opposite the side where the 3-D display is disposed, generate directed acoustic field and/or a formed tactile field. Because the generating components for all three senses, i.e., visual, audio, and tactile, are coplanar, units may be tiled and thereby scaled to generate larger multi-sense experiences. 1. An apparatus for generating a multi-sense user experience , comprising:a 3-D display apparatus; anda slit plane having slits and ultrasonic transducers; the 3-D display is coplanar with the slit plane; and', 'the slits in the slit plane allow light from the 3-D display apparatus to pass through the 3-D display to generate a 3-D image on the side of the slit plane opposite the 3-D display apparatus., 'wherein2. The apparatus of claim 1 , wherein the ultrasonic transducers are disposed on the side of the slit plane opposite the 3-D display apparatus.3. The apparatus of claim 1 , wherein the ultrasonic transducers are configured to generate at least one of an audio field or a tactile field.4. The apparatus of claim 3 , wherein an audio field generated by the ultrasonic transducers is at least partially a directed audio field.5. The apparatus of claim 3 , wherein a tactile field generated by the ultrasonic transducers is at least partially a shaped tactile field.6. The apparatus of claim 3 , wherein the apparatus is configured to generate a three-sense user experience comprising a visual experience claim 3 , an audio experience claim 3 , and a tactile experience.7. The apparatus of claim 1 , wherein the slits are rectangular.8. The apparatus of claim 1 , wherein the slits are non-rectangular.9. The apparatus of claim 1 , ...

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Номер записи: 31

07-01-2021 дата публикации

Transparent Flat-Panel Holographic Display

Номер: US20210003968A1

Автор: Daniel E. Smalley, Sundeep Jolly, V. Michael Bove, Jr.

Принадлежит: Massachusetts Institute of Technology

In a method for forming a holographic image, light is provided to a flat-panel holographic video display that includes waveguide elements that each have a light-guiding substrate and an array of transducers configured to produce a diffraction grating comprising surface acoustic waves. The grating causes the waveguide to outcouple light, focusing it to, or producing wavefront curvatures consistent with it having emanated from, one or more points, in order to form a holographic image. The transducer array may include a large number of densely packed, vertically-adjacent transducers for each hogel for full parallax or may include a small number of vertically-adjacent transducers and a cylindrical optical element for each hogel. The display may be edge-illuminated by a collinear multicolor source. The substrate exit face may have nanopatterned areas alternated with flat areas in order to create regions of optimal internal reflection next to regions of low reflection.

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Номер записи: 32

07-01-2021 дата публикации

WIDE FIELD OF VIEW HYBRID HOLOGRAPHIC DISPLAY

Номер: US20210003969A1

Автор: GELMAN Shaul Alexander, KAUFMAN Aviad, ROTSCHILD Carmel

Принадлежит: Real View Imaging Ltd.

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 ...

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Номер записи: 33

03-01-2019 дата публикации

Dynamic Holography Printing Device

Номер: US20190004476A1

Автор: Brian Mullins, Jamieson Christmas

Принадлежит: Dualitas Ltd

A printing device ( 106 ) includes a laser source ( 110 ) and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light (Modulator, 112 ). The printing device generates a laser control signal and a LCOS-SLM control signal. The laser source generates a plurality of incident laser beams based on the laser control signal. The LCOS-SLM receives the plurality of incident laser beams, modulates the plurality of incident laser beams based on the LCOS-SLM control signal, and generates a plurality of holographic wavefronts ( 214, 216 ). Each holographic wavefront forms at least one focal point. The printing device cures a surface layer of a target material ( 206 ) at interference points of focal points of the plurality of holographic wavefronts. The cured surface layer of the target material forms a two-dimensional printed content.

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Номер записи: 34

08-01-2015 дата публикации

Method of operating a laser and laser apparatus using intra-cavity digital holograms

Номер: US20150009547A1

Автор: Andrew Forbes, Ihar Anatolievich Litvin, Liesl Burger, Sandile NGCOBO

Принадлежит: Council for Scientific and Industrial Research CSIR

Laser apparatus includes an output coupler, a gain medium for generating laser light, a rear optical element, and an input coupler. The input coupler is arranged to direct a pump beam to the gain medium and to define an optical path between the output coupler and the rear optical element. The rear optical element is a spatial light modulator arranged to act as an intra-cavity digital holographic mirror which can be digitally addressed. The spatial light modulator displays selectively a gray-scale image of a hologram thereby to phase-modulate laser light in the cavity, thus making it possible to generate an output laser beam having a desired characteristic. The apparatus includes a computer arranged to generate at least one hologram corresponding to a desired output beam characteristic, and a driver circuit responsive to an output from the computer to generate a corresponding gray-scale image of the hologram on the spatial light modulator.

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Номер записи: 35

08-01-2015 дата публикации

Lighting Device for Headlights with a Phase Modulator

Номер: US20150009695A1

Автор: Dackson Masiyano, Jamieson Christmas, Mikael Collin

Принадлежит: Two Trees Photonics Ltd

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.

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Номер записи: 36

14-01-2016 дата публикации

APPARATUS AND METHOD FOR DISPLAYING HOLOGRAPHIC 3D IMAGE

Номер: US20160011565A1

Автор: An Jungkwuen, Choi Chilsung, KIM Sunil, Lee Hongseok, SONG Hoon, SUNG Geeyoung

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

An apparatus and a method for displaying holographic 3D image are provided. The method includes generating, by a controller, a hologram signal to generate multiple identical hologram images which are shifted with respect to one another by a predetermined distance and overlapped on one another, and modulating, by a spatially light modulator (SLM), light incident on the SLM based on the hologram signal. 1. A method of displaying a holographic three-dimensional (3D) image , the method comprising:generating a hologram signal to generate multiple identical hologram images which are shifted with respect to one another by a predetermined distance and overlapped on one another; andmodulating, by a spatially light modulator (SLM), light incident on the SLM based on the hologram signal.2. The method of claim 1 , wherein the generating the hologram signal comprises:determining a number of the multiple identical hologram images; anddetermining the predetermined distance.3. The method of claim 2 , wherein the determining the predetermined distance comprises determining the predetermined distance to set a pitch of the multiple identical hologram images to be greater than or equal to a pupil length of a user.4. The method of claim 3 , wherein the determining the predetermined distance comprises photographing the pupil length of the user.5. The method of claim 3 , wherein the determining the predetermined distance comprises determining the predetermined distance based on the pupil length of the user stored in advance and a background illuminance level.6. The method of claim 2 , further comprising controlling an intensity of the incident light based on the number of the multiple identical hologram images.7. The method of claim 2 , wherein the determining the number comprises determining the number of the multiple identical hologram images based on a signal input by the user.8. The method of claim 2 , further comprising tracking a position change of a pupil of a user.9. The method of ...

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Номер записи: 37

10-01-2019 дата публикации

Method and system for facilitating provisioning of holographic content

Номер: US20190011698A1

Автор: Pierce Elliott James

Принадлежит: Individual

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.

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Номер записи: 38

10-01-2019 дата публикации

Holographic head-up display device

Номер: US20190011706A1

Автор: Byung Choon Yang, Hye Sog Lee, Jae Ho YOU

Принадлежит: Samsung Display Co Ltd

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.

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Номер записи: 39

14-01-2021 дата публикации

Quantum simulator and quantum simulation method

Номер: US20210011430A1

Автор: Haruyoshi Toyoda, Hiroto Sakai, Kenji Ohmori, Nobuyuki Takei, Taro Ando, Tomoko HYODO, Yoshiyuki Ohtake, Yuu Takiguchi

Принадлежит: Hamamatsu Photonics KK, Inter University Research Institute Corp National Institute of Natural Sciences

A quantum simulator includes a pseudo speckle pattern generator, a main vacuum chamber, an atomic gas supply unit, a light beam generator, a photodetector, and an atom number detector. The pseudo speckle pattern generator generates a pseudo speckle pattern in the inside of the main vacuum chamber by light allowed to enter the inside of the main vacuum chamber through the second window. The pseudo speckle pattern generator includes a controller, a light source, a beam expander, a spatial light modulator, and a lens. The controller sets a modulation distribution of the spatial light modulator based on a two-dimensional pseudo random number pattern.

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Номер записи: 40

14-01-2021 дата публикации

METHODS AND APPARATUS FOR ANGULAR AND SPATIAL MODULATION OF LIGHT

Номер: US20210011431A1

Автор: Chen Guanghao, Hellman Brandon, TAKASHIMA Yuzuru

Принадлежит: Arizona Board of Regents on Behalf of the University of Arizona

A light projection system comprising a light modulator that comprises a plurality of pixels each capable of selectively directing a corresponding modulatable amount of light, and a processor coupled to the light modulator to control the amount of light output from each of the plurality of pixels. The processor is configured to control the light modulator to form a computer generated hologram (CGH) wavefront from the light modulator corresponding to an image to be produced in the far field. The processor is also configured to control the light modulator to selectively direct the CGH wavefront. The light modulator may comprise an angular light modulator (ALM) comprising the plurality of pixels, each of the plurality of pixels having an OFF state and an ON state, the ALM arranged to direct the amounts of light in the direction as the pixels transition between the ON state and the OFF state. 1. A light projection system , comprising:a light modulator comprising a plurality of pixels each capable of selectively directing a corresponding modulatable amount of light; anda processor coupled to the light modulator to control the amount of light that is output from each of the plurality of pixels, the processor configured to control the light modulator to form a computer generated hologram (CGH) wavefront from the light modulator which corresponds to an image to be produced in a far field, and to control the light modulator to selectively direct the CGH wavefront in a direction.2. The system of claim 1 , further comprising a light source comprising a laser or an LED adapted to project a beam of light onto the light modulator to form the modulatable amounts of light.3. The system of claim 1 , wherein the light modulator comprises an angular light modulator (ALM) comprising the plurality of pixels claim 1 , each of the plurality of pixels having an OFF state and an ON state claim 1 , the ALM arranged to direct the amounts of light in the direction as the pixels transition ...

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Номер записи: 41

10-01-2019 дата публикации

Holographic Display Device And Method For Controlling The Same

Номер: US20190011884A1

Автор: Yuxin Zhang

Принадлежит: BOE Technology Group Co Ltd

A holographic display device and a method for controlling the same are disclosed. The holographic display device includes a light source, a spatial light modulator, an adjustable light directing device and a direction controller. The modulator is arranged at a light exit side of the light source and modulates a reading light and to emit an output light; the controller for setting an optical path of the output light depending on an observation position and outputting a control signal to the light directing device depending on the optical path is connected to the light directing device, the optical path being matched with the observation position; the light directing device is arranged on an light exit side of the modulator and adjusts a direction of the output light of the modulator in response to the control signal to direct the output light to the observation position along the optical path.

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Номер записи: 42

10-01-2019 дата публикации

APPARATUS AND METHOD FOR GENERATING AN OPTICAL PATTERN FROM IMAGE POINTS IN AN IMAGE PLANE

Номер: US20190011885A1

Автор: DÜRR Peter, MAI Alexander

Принадлежит:

Apparatus for generating an optical pattern from image points in an image plane, including: a control unit; a micro-mirror array; an illumination unit controllable by the control unit; a focusing unit; the control unit being configured to control one or several micro-mirror groups formed of several micro-mirrors of the multitude of micro-mirrors such that the centroid beams reflected at the micro-mirrors of one of the micro-mirror groups meet in the image plane, and such that optical path lengths of the centroid beams reflected at the micro-mirrors of the respective micro-mirror group are equal from the illumination unit up to the image plane or differ by an integer multiple of a wavelength of the light beams in order to generate an image point of the image points in such a way. 1. An apparatus for generating an optical pattern from image points in an image plane , comprising:a control unit for controlling the generation of the optical pattern;a micro-mirror array for reflecting light beams that are incident on the micro-mirror array in a planar manner, wherein the micro-mirror array comprises a multitude to micro-mirrors, each being tiltable by the control unit about at least one axis so that a direction of a centroid beam of the light beams reflected at the respective micro-mirror is adjustable;an illumination unit controllable by the control unit for generating the light beams, configured such that the light beams are at least partially spatially coherent;a focusing unit for focusing onto the image plane the light beams reflected at the multitude of micro-mirrors of the micro-mirror array;the control unit being configured to control one or several micro-mirror groups formed of several micro-mirrors of the multitude of micro-mirrors such that the centroid beams reflected at the micro-mirrors of one of the micro-mirror groups meet in the image plane, and such that optical path lengths of the centroid beams reflected at the micro-mirrors of the respective micro- ...

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Номер записи: 43

09-01-2020 дата публикации

HOLOGRAPHIC DISPLAY DEVICE HAVING REDUCED CHROMATIC ABERRATION

Номер: US20200012092A1

Автор: An Jungkwuen, Choi Chilsung, KIM Young, Lee Hongseok, SONG Hoon, Won Kanghee

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A holographic display device includes a light source configured to emit light, the light including first light of a first wavelength, second light of a second wavelength, and third light of a third wavelength; a spatial light modulator configured to form a holographic pattern to modulate the light emitted from the light source and to produce a holographic image; and a focusing optical system configured to focus the holographic image. The focusing optical system includes a fixed-focus optical system having a fixed focal length, and a variable focus optical system having a focal length that is changed by electrical control. The fixed-focus optical system is configured to focus the first light of the first wavelength, the second light of the second wavelength, and the third light of the third wavelength on different positions, respectively, on an optical axis to cancel a chromatic aberration by the variable focus optical system. 1. A holographic display device comprising:a light source configured to emit light, the light comprising first light of a first wavelength, second light of a second wavelength, and third light of a third wavelength;a spatial light modulator configured to form a holographic pattern to modulate the light emitted from the light source and to produce a holographic image; anda focusing optical system configured to focus the holographic image, a fixed-focus optical system having a fixed focal length; and', 'a variable focus optical system having a focal length that is changed by electrical control,, 'wherein the focusing optical system compriseswherein the fixed-focus optical system is configured to focus the first light of the first wavelength, the second light of the second wavelength, and the third light of the third wavelength on different positions, respectively, on an optical axis to cancel chromatic aberration by the variable focus optical system.2. The holographic display device of claim 1 , wherein each of the fixed-focus optical system and ...

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Номер записи: 44

18-01-2018 дата публикации

Multi-beam resin curing system and method for whole-volume additive manufacturing

Номер: US20180015672A1

Автор: Allison E. Browar, Brett Kelly, Christopher M. Spadaccini, Johannes HENRIKSSON, Maxim Shusteff, Nicholas Fang, Robert Matthew Panas

Принадлежит: Lawrence Livermore National Security LLC

A multi-beam volumetric resin curing system and method for whole-volume additive manufacturing of an object includes a bath containing a photosensitive resin, a light source for producing a light beam, and a spatial light modulator which produces a phase- or intensity-modulated light beam by impressing a phase profile or intensity profile of an image onto a light beam received from the light source. The system and method also include projection optics which then produces multiple sub-image beams from the modulated light beam which are projected to intersect each other in the photosensitive resin to cure select volumetric regions of the resin in a whole-volume three-dimensional pattern representing the object.

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Номер записи: 45

19-01-2017 дата публикации

OPTICAL SYSTEM COMPRISING A SPATIAL LIGHT MODULATOR

Номер: US20170017076A1

Автор: Emiliani Valentina, Guillon Marc, Papagiakoumou Eirini

Принадлежит:

The invention concerns an optical system () comprising: 2301718. The optical system according to claim 1 , wherein for a same power of the unmodulated “zero order” part in the replay volume claim 1 , the perturbing aberrant optical element () decreases by a factor ten or more claim 1 , a maximum intensity of the unmodulated “zero order” part of the modulated light beam () in the replay volume ().3301217. The optical system according to one of to claim 1 , wherein the perturbing aberrant optical element () is configured for spatially modulating a phase of the incident light beam () and/or the modulated light beam ().430. The optical system according to claim 3 , wherein the aberrations introduced by the perturbing aberrant optical element () have spatial frequencies that are less than or equal to 1/(2a) claim 3 , where a is a period of the array of controllable elements.513. The optical system according to one of to claim 3 , wherein the spatial light modulator () is a spatial phase modulator.6301217. The optical system according to one of to claim 3 , wherein the perturbing aberrant optical element () comprises a lens having a cylindrical surface claim 3 , for spreading the incident light beam () and/or the modulated light beam () according to a spreading direction.7301217. The optical system according to one of to claim 3 , wherein the perturbing aberrant optical element () comprises a first lens having a first cylindrical surface and a second lens having a second cylindrical surface claim 3 , for spreading the incident light beam () and/or the modulated light beam () according to a first spreading direction and to a second spreading direction defining an angle relative to the first spreading direction.8. The optical system according to one of to claim 3 , wherein:{'b': 18', '18, 'the modulated part carries the image to be projected into the replay volume () for exciting a light sensitive substance located in the replay volume (), and'}{'b': '17', 'the light ...

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Номер записи: 46

21-01-2016 дата публикации

FLUORESCENCE RECEIVING APPARATUS AND FLUORESCENCE RECEIVING METHOD

Номер: US20160018786A1

Автор: Matsumoto Naoya

Принадлежит:

A fluorescence receiving apparatus comprises an excitation light source, a spatial light modulator of a phase modulation type for phase-modulating excitation light to obtain phase-modulated light, a focusing optical system configured to focus the phase-modulated light to a specimen, a specimen stage for supporting the specimen, a fluorescence receiver for receiving fluorescence generated by focus of the phase-modulated light to the specimen, a control unit for displaying a first CGH on the spatial light modulator, and a correction unit for correcting the first CGH. The correction unit comprises a receiver-specific sensitivity information storage preliminarily acquiring and storing sensitivity information per reception position specific to the fluorescence receiver, and a second hologram generator for correcting the first CGH, based on intensities of the fluorescence and the sensitivity information, to generate a second CGH. The control unit displays the second CGH on the spatial light modulator.

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Номер записи: 47

17-04-2014 дата публикации

OPTICALLY ADDRESSABLE SPATIAL LIGHT MODULATOR DIVIDED INTO PLURALITY OF SEGMENTS, AND HOLOGRAPHIC THREE-DIMENSIONAL IMAGE DISPLAY APPARATUS AND METHOD USING THE LIGHT MODULATOR

Номер: US20140104664A1

Автор: CHEN Jhen Si, Chu Daping, COLLINGS Neil, Crossland William Alden, Lee Hong-seok, SONG Hoon

Принадлежит:

Provided are an optically addressable spatial light modulator (OASLM) divided into a plurality of segments, and an apparatus and method for displaying a holographic three-dimensional (3D) image using the OASLM. The holographic 3D image display apparatus includes a first light source which emits a write beam, an electric addressable spatial light modulator (EASLM) which modulates the write beam emitted from the first light source according to hologram information regarding a 3D image, a second light source which emits a read beam, an OASLM which receives the write beam modulated by the EASLM and modulates the read beam emitted from the second light source according to hologram information included in the modulated write beam, a scanning optical unit which projects the write beam modulated by the EASLM onto the OASLM, and a Fourier lens which focuses the read beam modulated by the OASLM onto a predetermined space to form the 3D image. 1. An optically addressable spatial light modulator (OASLM) comprising:a plurality of divided light modulation segments arranged in a two-dimensional (2D) array;a plurality of gaps disposed between the plurality of segments; anda plurality of independent transparent electrodes and a plurality of independent interconnections, wherein one of the plurality of independent transparent electrodes and one of the plurality of independent interconnections is connected to each of the plurality of segments, such that each of the plurality of segments can be turned on/off independently of any other of the plurality of segments.2. The OASLM of claim 1 , further comprising:a transparent front substrate and a transparent rear substrate; wherein the plurality of transparent electrodes comprise a plurality of first transparent electrodes disposed on a surface of the front substrate and a plurality of second transparent electrodes disposed on a surface of the rear substrate; anda photosensitive layer disposed on the first transparent electrodes and a ...

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Номер записи: 48

22-01-2015 дата публикации

PHASE RETRIEVAL

Номер: US20150022526A1

Автор: Christmas Jamieson

Принадлежит:

There is provided a method of processing a pixellated image to retrieve a phase distribution representative of the image. The phase distribution representative of the image is in the Fourier domain. The method comprises padding the image pixels with padding, or non-image, pixels to increase the total number of pixels in the pixellated image. The method further comprises processing the padding or non-image pixels differently to the image pixels in each iteration of the iterative method. 2. A method as claimed in wherein for the first iteration claim 1 , the non-image pixels comprises an initial random noise field or uniform intensity field.3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. A method as claimed in wherein the attenuation factor for the nth iteration of the iterative method is less than the attenuation factor for the (n+1)th iteration.8. A method as claimed in wherein the gain factor for the nth iteration of the iterative method is more than the gain factor for the (n+1)th iteration.9. A method as claimed in wherein the variable gain and/or variable attention factor are at least partially optimised for each iteration by use of a calibration algorithm.10. A method as claimed in wherein the non-image pixels are processed by replacing the value of at least some of the non-image pixels.11. A method as claimed in wherein the at least some of the non-image pixels comprises those non-image pixels having a value above a predetermined threshold.12. method as claimed in where the at least some of the non-image pixels comprises all non-image pixels.13. A method as claimed in wherein the at least some of the non-image pixels are replaced by a predetermined value claims 10 , optionally claims 10 , unity.14. A method as claimed in wherein the non-image pixels are replaced by a random noise field.15. A method as claimed in wherein the random noise field is an initial random noise field for the first iteration.16. A method as claimed in wherein the step of ...

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Номер записи: 49

25-01-2018 дата публикации

Beam steering backlight unit and holographic display apparatus including the same

Номер: US20180024628A1

Автор: Chilsung Choi, Hongseok Lee, Hoon Song, Jungkwuen AN, Sunil Kim

Принадлежит: SAMSUNG ELECTRONICS CO LTD

A beam steering backlight unit provides a hologram image to multiple viewing positions and a holographic display apparatus includes the beam steering backlight unit. The backlight unit includes a light source array comprising a plurality of two-dimensionally arranged light sources and a micro lens array arranged to face the light source array and comprising a plurality of two-dimensionally arranged micro lenses. The light source array includes a plurality of light source blocks each corresponding to a respective one of the plurality of micro lenses, wherein a plurality of the light sources are arranged in each of the plurality of light source blocks. The light source array is configured to select and turn on only those light sources of the plurality of light sources respectively disposed in a same position in each of the plurality of light source blocks and turn off the other light sources.

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Номер записи: 50

26-01-2017 дата публикации

APPARATUS AND METHOD FOR MEASURING QUALITY OF HOLOGRAPHIC IMAGE

Номер: US20170024890A1

Автор: YOON Min Sung

Принадлежит: Electronics and Telecommunications Research Instit ute

A method and apparatus for measuring a quality of a holographic image are provided. An image quality measuring method may include acquiring a first image including a holographic image in a background, and a second image that does not include a holographic image, the first image and the second image being on the same background, extracting a gray level value and a dark-noise counted level value from the first image in a selected range of the first image, extracting a gray level value and a dark-noise counted level value from the second image in the same range as the selected range of the first image, and determining a holographic contrast ratio (HCR) of the holographic image based on the extracted gray level values and the extracted dark-noise counted level values. 1. An image display method using a spatial light modulator (SLM) , the image display method comprising:converting three-dimensional (3D) data to holographic data and uploading the holographic data to the SLM so that the holographic data is suitable for a display to display a holographic image;emitting an illumination light to the SLM; anddisplaying a holographic image on an active area formed by the SLM based on the holographic data and the illumination light.2. The image display method of claim 1 , wherein the holographic data is generated based on a preset test pattern.3. The image display method of claim 1 , wherein the illumination light has coherence.4. The image display method of claim 1 , wherein the illumination light has a feature of a parallel plane wave so that the illumination light is expanded to correspond to the active area.5. The image display method of claim 1 , wherein the emitting comprises uniformly emitting the illumination light to the active area.6. The image display method of claim 1 , wherein the displaying comprises displaying the holographic image by collecting or dispersing light in the active area when the illumination light passes through the SLM or is reflected from the SLM.7 ...

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Номер записи: 51

10-02-2022 дата публикации

Holographic fingerprint

Номер: US20220043394A1

Автор: Alexander Cole, Timothy Smeeton

Принадлежит: Envisics Ltd

A holographic projector comprising a spatial light modulator arranged to display a hologram of a light pattern for projection and to spatially-modulate light, in accordance with display, to form a holographic reconstruction, wherein the holographic reconstruction is spatially-separated from the spatial light modulator. If the holographic projection is operating properly, the formed holographic reconstruction should correspond to the light pattern. The holographic projector also comprises a detector array comprising a plurality of light detection elements arranged to detect light corresponding to a respective plurality of positions of the holographic reconstruction and to provide a respective plurality of output signals related to light detection, and a fault detection circuit arranged to compare one or more of the plurality of output signals from the respective plurality of light detection elements with one or more of a plurality of expected signals based on the light distribution of the light pattern.

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Номер записи: 52

10-02-2022 дата публикации

LIGHT IRRADIATING DEVICE AND SENSOR

Номер: US20220043395A1

Автор: Saitoh Yukito, Sasata Katsumi, Sato Hiroshi

Принадлежит: FUJIFILM Corporation

Provided is a small-sized light irradiating device having a simple configuration that projects an optical pattern. The light irradiating device includes a light source and a liquid crystal hologram element, in which the liquid crystal hologram element diffracts transmitted light in a plurality of different directions, the liquid crystal hologram element includes a liquid crystal hologram layer, the liquid crystal hologram layer is a layer that consists of a computer generated hologram and is formed of a composition including a liquid crystal compound, and the liquid crystal hologram layer further includes a plurality of regions in which directions of optical axes derived from the liquid crystal compound are different from each other. 1. A light irradiating device comprising:a light source; anda liquid crystal hologram element,wherein the liquid crystal hologram element diffracts transmitted light in a plurality of different directions,the liquid crystal hologram element includes a liquid crystal hologram layer,the liquid crystal hologram layer is a layer that consists of a computer generated hologram and is formed of a composition including a liquid crystal compound, andthe liquid crystal hologram layer includes a plurality of regions in which directions of optical axes derived from the liquid crystal compound are different from each other.2. The light irradiating device according to claim 1 ,wherein a size of the region is 50 μm or less.3. The light irradiating device according to claim 1 ,wherein the light source emits light having a spread angle of 5° or less.4. The light irradiating device according towherein a polarization switching element is provided between the light source and the liquid crystal hologram element and switches a polarization state of light to be transmitted.5. The light irradiating device according to claim 4 ,wherein the light source emits unpolarized light, anda polarizer is provided between the light source and the polarization switching ...

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Номер записи: 53

10-02-2022 дата публикации

HOLOGRAPHIC DISPLAY AND OPERATING METHOD THEREOF

Номер: US20220043396A1

Автор: An Jungkwuen, Choi Chilsung, KIM Sunil, Lee Hongseok, PARK Joonyong, SONG Hoon

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided are holographic displays and operating methods of the holographic display. The holographic display includes a backlight portion configured to emit light for displaying an image; a deflector configured to control a direction at which the image is displayed; a lens portion configured to control a location where the image to be displayed is formed to match a location that satisfies a diffraction condition; and a panel portion configured to display a 3D image by combining the image to be displayed with an interference pattern generated with respect to an overlapped hologram. 1. A holographic display comprising:a backlight portion configured to emit light for displaying an image recorded with a hologram;a deflector configured to control a direction at which the image is displayed;a lens portion configured to control a location where the image is formed to match a location that satisfies a diffraction condition; anda panel portion configured to display an interference pattern with respect to an overlapped hologram, the interference pattern comprising a first interference pattern corresponding to the image recorded with the hologram and a second interference pattern corresponding to a z-scan hologram image that adjusts in real time a focal depth of the image recorded with the hologram.2. The holographic display of claim 1 , further comprising a hologram supply portion configured to supply a control signal to the panel portion so that the panel portion displays the interference pattern.3. The holographic display of claim 1 , wherein the deflector comprises:a first deflector configured to deflect the image in a horizontal direction; anda second deflector configured to deflect the image in a vertical direction.4. The holographic display of claim 1 , wherein the deflector comprises a mono-deflector configured to deflect the image in a vertical direction and a horizontal direction.5. The holographic display of claim 1 , wherein the lens portion comprises a variable ...

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Номер записи: 54

24-01-2019 дата публикации

Near Eye Dynamic Holography

Номер: US20190025583A1

Автор: Mullins Brian

Принадлежит:

A display device accesses holographic data corresponding to an image. A laser source generates a laser light. A SLM (Spatial Light Modulator) receives the laser light and modulate the laser light based on the holographic data of the image. A partially transparent reflective lens receives the modulated laser light and reflects the modulated laser light towards an eye of a user of the display device. A holographic image is formed in the form of a reconstructed wavefront based on the modulated laser light. The partially transparent reflective lens is disposed adjacent to the eye of the user. 1. A display device comprising:a hardware processor configured to access encoded holographic data of an image;a laser source configured to generate laser light;a spatial light modulator (SLM) configured to receive the laser light and to modulate the laser light based on the encoded holographic data of the image; anda partially transparent reflective lens configured to receive the modulated laser light, to reflect the modulated laser light towards an eye of a user of the display device, and to form a holographic image in the form of a reconstructed wavefront based on the modulated laser light, the partially transparent reflective lens disposed adjacent to the eye of the user.2. The display device of claim 1 , wherein the partially transparent reflective lens comprises a parabolic lens including a concave side claim 1 , a convex side claim 1 , and a partially reflective layer applied to the concave side claim 1 ,wherein the parabolic lens forms a focus point located around the eye of the user,wherein the SLM directs the modulated laser light to the partially reflective layer on the concave side of the parabolic lens.3. The display device of claim 2 , wherein the partially transparent reflective lens combines external visible light reflected off a physical object that is within a field of a view of the display device with the modulated laser light.4. The display device of claim 2 , ...

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Номер записи: 55

24-01-2019 дата публикации

Holographic System for Controlling Plasma

Номер: US20190025757A1

Автор: Brian Mullins

Принадлежит: Dualitas Ltd

A device ( 200,300 ) forms steerable plasma ( 222, 310 ) using a laser source ( 110 ) and a LCOS-SLM, Liquid Crystal on Silicon Spatial Light Modulator ( 112 ). The device generates a laser control signal and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light Modulator) control signal. The laser source generates a plurality of incident laser beams based on the laser control signal. The LCOS-SLM receives the plurality of incident laser beams, modulates the plurality of incident laser beams based on the LCOS-SLM control signal to form a plurality of holographic wavefronts. Each holographic wavefront forms at least one corresponding focal point. The LCOS-SLM forms plasma at interference points of the focal points of the plurality of holographic wavefronts.

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Номер записи: 56

24-01-2019 дата публикации

SYSTEM AND METHOD FOR APPLYING ORTHOGONAL LIMITATIONS TO LIGHT BEAMS USING MICROELECTROMECHANICAL SYSTEMS

Номер: US20190025760A1

Автор: ASHRAFI SOLYMAN, LINQUIST ROGER

Принадлежит:

A system contains a light source for generating a plane wave light beam. A MicroElectroMechanical (MEM) system includes an array of micro-mirrors for generating a light beam having a plurality of orbital angular momentum modes multiplexed together within the light beam responsive to the plane wave light beam and control signals for controlling the array of micro-mirrors. A controller generates the control signals to dynamically control a position of each of a plurality of micro-mirrors of the array of micro-mirrors to apply the plurality of orbital angular momentum modes on to the light beam. The controller controls the position of the plurality of micro-mirrors to dynamically generate a plurality of holograms for dynamically applying the plurality orbital angular momentum modes to the plane wave light beam and to dynamically encode a phase and amplitude of the light beam responsive to the control signals. 1. A system , comprising:a light source for generating a plane wave light beam;a MicroElectroMechanical (MEM) system including an array of micro-mirrors for generating a light beam having a plurality of orbital angular momentum modes multiplexed together within the light beam responsive to the plane wave light beam and control signals for controlling the array of micro-mirrors; anda controller for generating the control signals to dynamically control a position of each of a plurality of micro-mirrors of the array of micro-mirrors to apply the plurality of orbital angular momentum modes on to the light beam, wherein the controller controls the position of the plurality of micro-mirrors to dynamically generate a plurality of holograms for dynamically applying the plurality orbital angular momentum modes to the plane wave light beam and to dynamically encode a phase and amplitude of the light beam responsive to the control signals.2. The system of claim 1 , wherein the MEM system comprises a digital light processing (DLP) system.3. The system of claim 1 , wherein the ...

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Номер записи: 57

24-04-2014 дата публикации

HOLOGRAPHIC IMAGING DEVICE AND METHOD

Номер: US20140111609A1

Автор: Yamaichi Eiji

Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Technologies are generally described for reproducing holographic images by causing a photo-induced change in the diffractive index of a holographic recording medium. An example device may include a light irradiation unit and a transparent substrate. The light irradiation unit can be configured to transmit a photo-inducing light. Further, the transparent substrate may have a predetermined refractive index and can be configured to include a first surface and a second surface opposite the first surface. The first surface can be configured to receive an incident light, and the second surface can be configured to receive the photo-inducing light. The transparent substrate can be configured to form interference fringe patterns from a photo-induced change in the refractive index of the transparent substrate responsive to the photo-induced light. 1. A holographic imaging device , comprising:a light irradiation unit configured to transmit a photo inducing light; anda transparent substrate having a predetermined refractive index, the transparent substrate including a first surface and a second surface opposite the first surface, wherein the first surface is configured to receive an incident light, and wherein the second surface is configured to receive the photo-inducing light, andwherein the light irradiation unit and the transparent substrate are collaboratively configured to selectively form interference fringe patterns from a photo-induced change in the refractive index of the transparent substrate responsive to the photo-induced light.2. The holographic imaging device of claim 1 , wherein the light irradiation unit includes at least one laser beam source.3. The holographic imaging device of claim 2 , wherein the at least one laser beam source is configured to irradiate the second surface of the transparent substrate with two laser beams crossing with each other at a predetermined location in the transparent substrate effective to cause the photo-induced change in the ...

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Номер записи: 58

23-01-2020 дата публикации

Head-Up Display

Номер: US20200026077A1

Автор: Christmas Jamieson, Karner Mate

Принадлежит:

There is provided a head-up display for a vehicle. The head-up display has a first housing and a second housing. The first housing comprises a picture generating unit and optical system. The second housing comprises a substantially flat cover glass and a layer. The picture generating unit is arranged to output pictures. The picture generating unit comprises a light source and a spatial light modulator. The light source is arranged to emit light. The spatial light modulator is arranged to receive the light from the light source and spatially-modulate the light in accordance with computer-generated light-modulation patterns displayed on the spatial light modulator to form a holographic reconstruction corresponding to each picture. The optical system is arranged to receive the pictures output by the picture generating unit and relay the pictures using an optical combiner to form a virtual image of each picture. The optical combiner combines light output by the picture generating unit with light from a real-world scene to present combined images to a viewer within an eye-box. The second housing is disposed between the first housing and optical combiner. The substantially flat cover glass is arranged to protect the first housing. The layer is arranged to change the trajectory of light such that any sunlight reflected by the cover glass is deflected away from the eye-box. 1. A head-up display for a vehicle , the head-up display having a first housing comprising:a picture generating unit arranged to output pictures, wherein the picture generating unit comprises: a light source arranged to emit light; and a spatial light modulator arranged to receive the light from the light source and spatially-modulate the light in accordance with computer-generated light-modulation patterns displayed on the spatial light modulator to form a holographic reconstruction corresponding to each picture; andan optical system arranged to receive the pictures output by the picture generating unit ...

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Номер записи: 59

28-01-2021 дата публикации

Holographic display apparatus and method for providing expanded viewing window

Номер: US20210026298A1

Автор: Chilsung Choi, Hongseok Lee, Hoon Song, Hwi Kim, Jungkwuen AN, Yunhee Kim

Принадлежит: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SAMSUNG ELECTRONICS CO LTD

A holographic display apparatus capable of providing an expanded viewing window and a display method are provided. The holographic display apparatus includes an image processor configured to provide computer generated hologram (CGH) data to a spatial light modulator, wherein the image processor is further configured to generate a hologram data array comprising information of the holographic image to be reproduced at the first resolution or a resolution less than the first resolution, perform an off-axis phase computation on the hologram data array at the second resolution, and then, generate the CHG data at the first resolution.

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Номер записи: 60

04-02-2016 дата публикации

HOLOGRAPHY REPRODUCING APPARATUS AND HOLOGRAPHY REPRODUCING METHOD

Номер: US20160033935A1

Автор: KIM Sunil, Lee Hongseok, Seo Wontaek

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A holography reproducing apparatus and a holography reproducing method are provided. The holography reproducing apparatus includes: a backlight configured to emit light, and a spatial light modulator configured to modulate light input from the backlight and transmit the modulated light to generate a transmissive hologram image, wherein at least one of a wave front of light emitted from the backlight and the spatial light modulator has a curved surface. 1. A holography reproducing apparatus comprising:a backlight configured to emit light; anda spatial light modulator configured to modulate light input from the backlight and transmit the modulated light to generate a transmissive hologram image,wherein at least one of a wave front of light emitted from the backlight and the spatial light modulator has a curved surface.2. The holography reproducing apparatus of claim 1 , wherein the spatial light modulator has a curved surface.3. The holography reproducing apparatus of claim 2 , wherein the curved surface of the spatial light modulator has locally the same radius of curvature as a distance between the spatial light modulator and a coordinate plane just in front of an eye lens.4. The holography reproducing apparatus of claim 3 , wherein the curved surface of the spatial light modulator is a concave curved surface.5. The holography reproducing apparatus of claim 4 , wherein the spatial light modulator has a curved surface having a shape selected from a paraboloid claim 4 , a hyperboloid claim 4 , an ellipsoid claim 4 , a parabola claim 4 , a hyperbola claim 4 , and an elliptic line.6. The holography reproducing apparatus of claim 2 , wherein the curved surface of the spatial light modulator has a shape selected from a paraboloid claim 2 , a hyperboloid claim 2 , an ellipsoid claim 2 , a parabola claim 2 , a hyperbola claim 2 , and an elliptic line.7. The holography reproducing apparatus of claim 1 , wherein the backlight is further configured to emit non-plane wave light ...

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Номер записи: 61

01-02-2018 дата публикации

Slim backlight unit for holographic display device and holographic display device including the same

Номер: US20180032030A1

Автор: Alexander V. MOROZOV, Chilsung Choi, German B. Dubinin, Hongseok Lee, Hoon Song, Jungkwuen AN, Sunil Kim, Young Kim, Yunhee Kim

Принадлежит: SAMSUNG ELECTRONICS CO LTD

A backlight unit for a binocular-holographic display device and a holographic display device including the same are provided. The backlight unit includes a light source unit which outputs light, a first beam expansion unit which expands, in a first direction, the light output from the light source unit, a second beam expansion unit which expands, in a second direction perpendicular to the first direction, the light output from the first beam expansion unit, and a beam deflection unit which diffracts light incident on the first beam expansion unit. The holographic display device includes the backlight unit, a field lens, and a spatial light modulator.

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Номер записи: 62

01-05-2014 дата публикации

Apparatus and Method for Displaying a Video Image

Номер: US20140118806A1

Автор: Buckley Edward, Cable Adrian, COLLINGS Neil, Crossland William, Lawrence Nicholas, Mash Peter, Wilkinson Timothy

Принадлежит: Cambridge Enterprise Limited

A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam. 1. A method of projecting a 2-D video image onto a screen , the projected 2-D video image being made up of sequential image frames at a video frame rate , the method comprising:receiving an input video image made up of video frames at a processor;in the processor, processing each input in real-time to obtain quantized data representative of one or more respective phase-only kinoforms;writing the quantized data representative of one or more respective phase-only kinoforms to a reflective phase-only spatial light modulator to sequentially represent each said kinoform;illuminating the reflective phase-only spatial light modulator with visible light from an illumination source to provide a phase modulated output beam;processing the phase modulated output beam from the reflective phase-only spatial light modulator by optics to reconstruct the sequential image frames across the screen at a replay field in real-time for viewing the 2-D video image; andcontrolling the intensity to achieve a desired image brightness from frame to frame.2. A method as claimed in in which the video image is one of a time varying or still image.3. A method as claimed in claim 1 , further comprising parallel processing respective sub-sets of an initial kinoform to obtain optimized sub-sets and recombining the optimized sub-sets.4. A method as claimed in claim 3 , in which the initial kinoform sub-sets comprise initial kinoform segments.5. A method as claimed in claim 3 , in which the initial kinoform is randomly generated or pre-determined or the result of an initial FFT claim 3 , or a recycled phase distribution.6. A method as claimed in claim 1 , in which image frames are processed to obtain ...

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Номер записи: 63

05-02-2015 дата публикации

METHOD OF COMPUTING A HOLOGRAM

Номер: US20150036199A1

Автор: Haussler Ralf, Leister Norbert, SCHWERDTNER Armin

Принадлежит:

A method of computing a hologram by determining the wavefronts at the approximate observer eye position that would be generated by a real version of an object to be reconstructed. In normal computer generated holograms, one determines the wavefronts needed to reconstruct an object; this is not done directly in the present invention. Instead, one determines the wavefronts at an observer window that would be generated by a real object located at the same position of the reconstructed object. One can then back-transforms these wavefronts to the hologram to determine how the hologram needs to be encoded to generate these wavefronts. A suitably encoded hologram can then generate a reconstruction of the three-dimensional scene that can be observed by placing one's eyes at the plane of the observer window and looking through the observer window. 120-. (canceled)21. A method of generating a holographic reconstruction of an object using a display device and a computer , the display device including a light source , an optical system and a spatial light modulator , the optical system illuminates the spatial light modulator , the optical system images the light source into an observer plane , and the holographic reconstruction of the object being visible by the observer if the observer's eyes are placed at the observer plane; the method comprising the step of:using the computer to encode a hologram on the spatial light modulator, andwherein tracking of the observer is achieved by a configurable diffractive optical element.22. The method of wherein the wavefronts are reconstructed by the hologram or wherein the wavefronts are calculated for one or more observers windows.23. The method of wherein the hologram is computed by determining the wavefronts at the observer eye position that would be generated by the object to be reconstructed.24. The method of wherein the determined wavefronts at the observer eye position are back-transformed to the spatial light modulator to determine ...

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Номер записи: 64

31-01-2019 дата публикации

Photostimulation device and photostimulation method

Номер: US20190033284A1

Автор: Hirotoshi Terada, Koyo Watanabe, Naoya Matsumoto

Принадлежит: Hamamatsu Photonics KK

A photostimulation apparatus includes an objective lens arranged to face a biological object, a light source configured to output light to be radiated toward the biological object via the objective lens, a shape acquisition unit configured to acquire information about a shape with a refractive index difference in the biological object, a hologram generation unit configured to generate aberration correction hologram data for correcting aberrations due to the shape with the refractive index difference on the basis of the information acquired by the shape acquisition unit, and a spatial light modulator on which a hologram based on the aberration correction hologram data is presented and which modulates the light output from the light source.

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Номер записи: 65

31-01-2019 дата публикации

DIRECTIONAL BACKLIGHT UNIT, THREE-DIMENSIONAL (3D) IMAGE DISPLAY APPARATUS, AND 3D IMAGE DISPLAYING METHOD

Номер: US20190033609A1

Автор: BAE Jihyun, CHUNG Jaeseung, HONG Seogwoo, KIM Dongouk, Kim Hyunjoon, LEE Sunghoon, PARK Joonyong, SHIM Dongsik, SHIN Bongsu

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A directional backlight unit, a three-dimensional (3D) image display apparatus, and a 3D image displaying method are provided. The directional backlight unit includes a light guide plate having an emission surface on which a plurality of grating elements including first and second groups of grating elements are provided. The plurality of grating elements are arranged such that light beams emitted from the first and second groups of grating elements commonly propagate through a plurality of pixel points and respectively form first and second groups of view points of which corresponding regions do not overlap with each other. 1. A directional backlight device comprising:a light guide plate;a light source configured to provide light to the light guide plate; anda plurality of grating elements provided on an emission surface of the light guide plate and configured to externally emit the light from the emission surface such that the light propagates through a plurality of pixel points spaced apart from the emission surface,wherein at least two of the plurality of grating elements match with each pixel point from among the plurality of pixel points, two adjacent grating elements match with different pixel points from among the plurality of pixel points, and light beams emitted from the at least two grating elements propagate through one pixel point matched with the at least two grating elements and then are simultaneously directed toward different view points.2. The directional backlight device of claim 1 , wherein an overall number of grating elements is an integer multiple of a number of pixel points included in the plurality of pixel points.3. The directional backlight unit of claim 1 , wherein the plurality of grating elements are arranged such that light beams emitted from the plurality of grating elements propagate through the plurality of pixel points and form a plurality of groups of view points and that regions within which different groups of view points are ...

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Номер записи: 66

31-01-2019 дата публикации

Method and system for simulation of forces using holographic objects

Номер: US20190033780A1

Автор: Abhay K. Patra, Harish Bharti, Sarbajit K. Rakshit

Принадлежит: International Business Machines Corp

The disclosure is directed to simulating forces using holographic objects. A method according to embodiments includes: generating an invisible holographic object, the invisible holographic object providing a haptic effect; displaying a visible holographic object; aligning the visible holographic object and the invisible holographic object to provide a visible and touchable combined holographic object, the combined holographic object providing the haptic effect; applying a force to the combined holographic object, the applied force causing a displacement of the combined holographic object and including an amplitude and direction; and adjusting the haptic effect of the combined holographic object to generate an adjusted haptic effect representative of an effect of the applied force on the combined holographic object.

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Номер записи: 67

30-01-2020 дата публикации

DEVICE FOR COMBINING LIGHT BEAMS WHICH INTERACT WITH ADJACENTLY ARRANGED PIXELS OF A LIGHT MODULATOR

Номер: US20200033672A1

Автор: Leister Norbert, Reichelt Stephan

Принадлежит:

The present invention relates to a device for combining light beams which interact with adjacently arranged pixels of a light modulator. The present invention furthermore relates to a device for beam combination and to a spatial light modulation device for complex-valued modulation. The invention relates to a device for beam combination, and to an optical arrangement of polarization-sensitive component parts which allows complex-valued modulation of a light field by means of a phase-modulating light modulator and a beam combiner, which is insensitive to changes in the incidence direction of the illumination wave. This document furthermore also relates to various arrangements of reflectively operating light modulators. 1. A device for combining light beams which interact with adjacently arranged pixels of a light modulator , wherein the light modulator comprises a multiplicity of pixels and is driven in such a way that two adjacent pixels respectively form a macropixel , wherein a beam splitter is provided in relation to a macropixel , which is configured and arranged in such a way that incident light beams are thereby split into a first subbeam and a second subbeam , in such a way that the first subbeam propagates in the direction of the first pixel of the macropixel and the second subbeam propagates in the direction of the second pixel of the macropixel , wherein a first structured beam influencing component is provided between the beam splitter and the light modulator , which is configured in such a way that the first subbeam can thereby be influenced in a different way to the second subbeam , wherein the first and second subbeams pass after interaction with the respective pixel of the macropixel through a second structured beam influencing component , which is configured in such a way that the first subbeam can thereby be influenced in a different way to the second subbeam , wherein a beam combiner is provided , which is configured and arranged in such a way that ...

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Номер записи: 68

30-01-2020 дата публикации

HOLOGRAPHIC PROJECTOR

Номер: US20200033803A1

Автор: Christmas Jamieson

Принадлежит:

There is provided a holographic projection system arranged to project light to a rectangular replay field. The holographic projection system comprises: a spatial light modulator, comprising an array of pixels, arranged to receive a computer-generated hologram and output spatially-modulated light forming a holographic reconstruction at the rectangular replay field, wherein each pixel is rectangular; and a light source arranged to illuminate the plurality of pixels to form the spatially-modulated light forming a holographic reconstruction at the replay field, wherein the rectangular replay field is spatially separated from the spatial light modulator and the aspect ratio of the rectangular replay field is substantially equal to the aspect ratio of each pixel but orthogonally orientated. 123.-. (canceled)24. A holographic projection system arranged to project light to a rectangular replay field , wherein the holographic projection system comprises:a spatial light modulator, comprising an array of individually addressable pixels, arranged to receive a computer-generated hologram and output spatially-modulated light forming a holographic reconstruction at the rectangular replay field, wherein each pixel is rectangular;a light source arranged to illuminate the plurality of pixels to form the spatially-modulated light forming a holographic reconstruction at the replay field, wherein the holographic reconstruction comprises image content arranged to be viewed by a human viewer of the holographic projection system,wherein the rectangular replay field is spatially separated from the spatial light modulator and the aspect ratio of the rectangular replay field is substantially equal to the aspect ratio of each pixel but with the rectangular replay field and each pixel orthogonally orientated with respect to each other.25. A holographic projection system as claimed in wherein the holographic reconstruction is formed by interference of the spatially-modulated light at the replay ...

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Номер записи: 69

04-02-2021 дата публикации

Diffractive optic for holographic projection

Номер: US20210033769A1

Автор: Rajesh Menon

Принадлежит: University of Utah Research Foundation UURF

Technology is described for methods and systems for a diffractive optic device ( 525 ) for holographic projection. The diffractive optic device can include a lens ( 535 ) configured to convey a hologram. The lens ( 535 ) further comprises a patterned material ( 510 ) formed with an array of cells having a non-planar arrangement of cell heights extending from a surface of the patterned material. The lens further optionally comprises a filling material ( 530 ) to fill gaps on both surfaces of the patterned material.

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Номер записи: 70

04-02-2021 дата публикации

An optical device for forming a distribution of a three-dimensional light field

Номер: US20210033895A1

Автор: Lodewijks Kristof, Rottenberg Xavier

Принадлежит:

An optical device for forming a distribution of a three-dimensional light field comprises: an array of individually addressable unit cells; each unit cell in the array of unit cells comprising a stack including: at least one electrode; and a resonance defining layer, comprising at least a phase change material, PCM, layer, wherein the resonance defining layer is patterned to define a geometric structure dimensioned for defining a wavelength-dependent in-plane resonance of an electromagnetic wave; wherein the at least one electrode causes a phase change of the phase change material based on receiving a control signal to alter a wavelength-dependency of resonance in the resonance defining layer for controlling the optical property of the unit cell; wherein unit cells in the array of unit cells are separated such that the PCM layer of a unit cell is separated from the PCM layer in an adjacent unit cell. 2. The optical device according to claim 1 , wherein the geometric structure extends in one direction in the plane of the PCM layer defining a length of the geometric structure claim 1 , wherein the geometric structure is dimensioned such that a thickness of the geometric structure is in a range between 0.25*the length of the geometric structure and 1*the length of the geometric structure claim 1 , wherein the length of the geometric structure is smaller than λ/2 claim 1 , wherein λ is a wavelength of light to be used with the unit cell.3. The optical device according to claim 1 , wherein the geometric structure is circular in the plane of the4. The optical device according to claim 1 , wherein the geometric structure has a first size in a first direction in the plane of the resonance defining layer and a second size claim 1 , different from the first size claim 1 , in a second direction claim 1 , different from the first direction claim 1 , in the plane of the resonance defining layer.5. The optical device according to claim 1 , wherein the geometric structure is a ...

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Номер записи: 71

04-02-2021 дата публикации

SAW Modulators and Light Steering Methods

Номер: US20210033943A1

Автор: Byrnes Steven J., Callahan Dennis M., Favalora Gregg E., Frank Ian W., Laine Juha-Pekka J., Moebius Michael G., Register Joseph J.

Принадлежит:

An electro-holographic light field generator device is disclosed. The light field generator device has an optical substrate with a waveguide face and an exit face. One or more surface acoustic wave (SAW) optical modulator devices are included within each light field generator device. The SAW devices each include a light input, a waveguide, and a SAW transducer, all configured for guided mode confinement of input light within the waveguide. A leaky mode deflection of a portion of the waveguided light, or diffractive light, impinges upon the exit face. Multiple output optics at the exit face are configured for developing from each of the output optics a radiated exit light from the diffracted light for at least one of the waveguides. An RF controller is configured to control the SAW devices to develop the radiated exit light as a three-dimensional output light field with horizontal parallax and compatible with observer vertical motion. 1. An electro-holographic light field generator device , comprising:a substrate;an array of surface acoustic wave modulators having waveguides extending across the substrate; andtwo dimensional array of diffractive optics for shaping output light from the substrate.2. The device as claimed in claim 1 , wherein the waveguides extend parallel to each other across the substrate.3. The device as claimed in claim 1 , wherein a separation between the waveguides is less than 400 μm.4. The device as claimed in claim 1 , wherein a length of the waveguides is less than 10 centimeters.5. The device as claimed in claim 1 , wherein different ones of the waveguides carry different colors of light.6. The device as claimed in claim 1 , wherein the array of optics is on a face of the substrate.7. The device as claimed in claim 1 , wherein the array of optics is on an exit face of the substrate.8. The device as claimed in claim 1 , wherein the array of optics is an array of diffractive lenses.9. The device as claimed in claim 8 , wherein the diffractive ...

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Номер записи: 72

04-02-2021 дата публикации

HOLOGRAPHIC DISPLAY METHOD AND HOLOGRAPHIC DISPLAY DEVICE

Номер: US20210034012A1

Автор: SHI Bingchuan

Принадлежит:

Disclosed are a holographic display method and a holographic display device. The holographic display method includes: acquiring an area of Nth diffraction order corresponding to an eye position; according to the area of Nth diffraction order, calculating a holographic complex amplitude distribution corresponding to a window of Nth diffraction order to obtain window hologram information, a function of the holographic complex amplitude distribution being expressed by C(m, n)=A(m, n)*exp[−iφ(m, n)/N]; encoding the window hologram information; and according to the encoded window hologram information, loading the encoded window hologram information in the area of Nth diffraction order to display a hologram. 1. A holographic display method , comprising:{'sup': 'th', 'acquiring an area of Ndiffraction order corresponding to an eye position;'}{'sup': th', 'th, 'according to the area of Ndiffraction order, calculating a holographic complex amplitude distribution corresponding to a window of Ndiffraction order to obtain window hologram information, a function of the holographic complex amplitude distribution being expressed by C(m, n)=A(m, n)*exp[−iφ(m, n)/N];'}encoding the window hologram information; and{'sup': 'th', 'according to the encoded window hologram information, loading the encoded window hologram information in the area of Ndiffraction order to display a hologram,'}wherein C is the function of the holographic complex amplitude distribution, A is an amplitude function, i is a phase identifier, φ is a phase function, m is a sequence number of row where a pixel is located and n is a sequence number of column where the pixel is located, and N=±j, where j is an integer other than 0 and multiples of 3.2. The holographic display method according to claim 1 , wherein when the area of Ndiffraction order corresponding to the eye position is an area of 1diffraction order claim 1 , holographic complex amplitudes corresponding to a window of 1diffraction order are directly ...

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Номер записи: 73

11-02-2016 дата публикации

Video Display Device And Head-Mounted Display

Номер: US20160041393A1

Автор: Yoshihiro Inagaki

Принадлежит: KONICA MINOLTA INC

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.

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Номер записи: 74

09-02-2017 дата публикации

METHOD AND DEVICE FOR ENCODING THREE-DIMENSIONAL SCENES WHICH INCLUDE TRANSPARENT OBJECTS IN A HOLOGRAPHIC SYSTEM

Номер: US20170038728A1

Автор: Pfeifer Nils, Zschau Enrico

Принадлежит:

Method for computing the code for the reconstruction of three-dimensional scenes which include objects which partly absorb light or sound. The method can be implemented in a computing unit. In order to reconstruct a three-dimensional scene as realistic as possible, the diffraction patterns are computed separately at their point of origin considering the instances of absorption in the scene. The method can be used for the representation of three-dimensional scenes in a holographic display or volumetric display. Further, it can be carried out to achieve a reconstruction of sound fields in an array of sound sources. 1. A method for computing holographic encoding values for an optical light modulator of a holographic system for the reconstruction of three-dimensional scenes , which include objects with transparent properties , for at least one observer eye , comprising:dividing the three-dimensional scene into individual object points and determining the coordinates of these object points,determining a virtual observer position which corresponds with the position of a selected observer eye where the three-dimensional scene is apparently perceived,determining all object points to be encoded which are not fully covered by other opaque object points seen from the virtual observer position as visible real or virtual object points,sorting of all visible object points to be encoded which are seen at the same angle from the virtual observer position by their distance to the virtual observer position,determining the actual brightness of each visible object point, with considering the location and intensity of all real and virtual light sources of the scene at the position of those object points at the angle at which they are seen from the virtual observer position, where the physical properties of the objects including the real and virtual light sources are taken into account,determining for each visible object point to be encoded an apparent brightness value with which the ...

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Номер записи: 75

24-02-2022 дата публикации

IMAGE PROCESSING

Номер: US20220057751A1

Автор: Christmas Jamieson

Принадлежит:

Methods of performing a complex Fourier transform of a complex data set corresponding to an image are disclosed. The methods comprise receiving a complex data set and performing a first 1D complex Fourier transform in the complex data set in Cartesian form; converting the complex data set into polar form and compressing the complex data set in polar form; performing a row-column transformation of the complex data set; decompressing the complex data set and converting the complex data set back into Cartesian form; and performing a second 1D Fourier transform in the complex data set in Cartesian form, wherein the second 1D complex Fourier transform is orthogonal to the first 1D complex Fourier transform. Corresponding systems are also disclosed, as are application to the iterative computation of computer-generated holograms. 1. An image processing system , comprising:one or more processors, arranged to perform a Fourier transform of a first complex data set corresponding to an image, wherein the first complex data set comprises a two-dimensional array of complex values in Cartesian form each represented in a first number format with a first number of bits, the values of the two-dimensional array representing pixels of the image, and the two-dimensional array defines first linear arrays of values representing pixels along one dimension and second linear arrays of values representing pixels along the other dimension;tangible, non-transitory, computer-readable media storing instructions executable by the one or more processors, wherein the instructions, when executed, cause the image processing system to perform functions comprising:performing a 1D Fourier transform of each first linear array of values of the first complex data set in Cartesian form;converting each value of each Fourier transformed first linear array to polar form;converting each value in polar form to a second number format with a second number of bits less than the first number of bits;storing the ...

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Номер записи: 76

07-02-2019 дата публикации

HOLOGRAPHIC PROJECTOR

Номер: US20190041797A1

Автор: Christmas Jamieson, Cole Alexander

Принадлежит:

A holographic projector comprises a spatial light modulator, a light receiving member and a driver. The spatial light modulator is arranged to receive and represent a computer-generated hologram and spatially modulate light incident on the spatial light modulator to form a holographic reconstruction in accordance with the computer-generated hologram. The light receiving member is arranged to receive spatially modulated light along an optical axis from the spatial light modulator and the holographic reconstruction is formed on the light receiving member. The driver is coupled to the light receiving member to move the light receiving member in a plane, The driver is configured to move the light receiving member while maintaining an orientation of the light receiving member relative to the spatial light modulator substantially constant, 1. A holographic projector comprising:a spatial light modulator arranged to receive and represent a computer-generated hologram and spatially modulate light incident on the spatial light modulator to form a holographic reconstruction in accordance with the computer-generated hologram;a light receiving member arranged to receive spatially modulated light along an optical axis from the spatial light modulator, wherein the holographic reconstruction is formed on the light receiving member; anda driver coupled to the light receiving member to move the light receiving member in a plane, wherein the driver is configured to move the light receiving member while maintaining an orientation of the light receiving member relative to the spatial light modulator substantially constant.2. A holographic projector according to claim 1 , wherein the driver is configured to reciprocate the light receiving member.3. A holographic projector according to claim 2 , wherein the light receiving member is secured to an arm connected to an arrangement for reciprocating the arm in a direction normal to the optical axis.4. A holographic projector according to ...

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Номер записи: 77

06-02-2020 дата публикации

Dynamic Holography Focused Depth Printing Device

Номер: US20200041957A1

Автор: Mullins Brian

Принадлежит:

A printing device () includes a laser source and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light Modulator). The printing device generates a laser control signal and a LCOS-SLM control signal. The laser source () generates a plurality of incident laser beams based on the laser control signal. The LCOS-SLM () receives the plurality of incident laser beams, modulates the plurality of incident laser beams based on the LCOS-SL M control signal to generate a plurality of holographic wavefronts () from the modulated plurality of incident laser beams. Each holographic wavefront forms at least one corresponding focal point. The printing device cures a surface layer or sub-surface layer () of a target material () at interference points of focal points of the plurality of holographic wavefronts. The cured surface layer of the target material forms a three-dimensional printed content. 1. A device comprising:a hardware processor comprising a dynamic holography printing application configured to generate a laser control signal and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light Modulator) control signal based on a three-dimensional object;a laser source configured to generate a plurality of incident laser beams based on the laser control signal; anda LCOS-SLM configured to receive the plurality of incident laser beams, to modulate the plurality of incident laser beams based on the LCOS-SLM control signal, to generate a plurality of holographic wavefronts, each holographic wavefront forming a light field region comprising at least one focal point, the plurality of light field regions corresponding to a body of the three-dimensional object formed in a target material, and to cure a portion of a target material at the plurality of light field regions, the portion of the target material including the body of the three-dimensional object.2. The device of claim 1 , further comprising:a laser source controller coupled to the laser source, the laser source controller configured ...

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Номер записи: 78

06-02-2020 дата публикации

HOLOGRAPHIC DISPLAY APPARATUS AND HOLOGRAPHIC DISPLAY METHOD FOR PROVIDING ENHANCED IMAGE QUALITY

Номер: US20200041958A1

Автор: An Jungkwuen, Lee Hongseok, SEO Juwon, Seo Wontaek, SONG Hoon

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided is a holographic display apparatus including a light source configured to emit light; a spatial light modulator configured to sequentially generate hologram patterns for modulating the light and to sequentially reproduce frames of hologram images based on the hologram patterns; and a controller configured to provide hologram data signals to the spatial light modulator, the hologram data signals being used to sequentially generate the hologram patterns. The controller is configured to further provide, to the spatial light modulator, diffraction pattern data signals for forming periodic diffraction patterns for adjusting locations of the hologram images to be reproduced on a hologram image plane, the diffraction pattern data signals being configured to move the periodic diffraction patterns on the spatial light modulator along a predetermined direction for each of the frames. 1. A controller for a holographic display apparatus comprising a spatial light modulator , the controller comprising a processor configured to:generate a first frame hologram data signal comprising information of a first frame hologram pattern for reproducing a first frame hologram image for a first frame and a first frame diffraction pattern data signal comprising information of a first frame periodic diffraction pattern for adjusting a location of the first frame hologram image to be reproduced;generate a first final signal comprising the first frame hologram data signal and the first frame diffraction pattern data signal;provide the first final signal to the spatial light modulator;generate a second frame hologram data signal comprising information of a second frame hologram pattern for reproducing a second frame hologram image for a second frame and a second frame diffraction pattern data signal comprising information of a second frame periodic diffraction pattern for adjusting a location of the second frame hologram image to be reproduced;generate a second final signal comprising ...

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Номер записи: 79

18-02-2021 дата публикации

SPATIAL LIGHT MODULATOR, LIGHT MODULATING DEVICE, AND METHOD FOR DRIVING SPATIAL LIGHT MODULATOR

Номер: US20210048692A1

Автор: Sakai Hiroto, TAKUMI Munenori, Tanaka Hiroshi

Принадлежит: HAMAMATSU PHOTONICS K.K.

An SLM includes a modulation unit and a driving circuit. The modulation unit includes a plurality of pixels, and modulates a phase or an intensity of incident light in each pixel according to an amplitude of a drive signal changing periodically with time. The driving circuit provides the drive signal to the modulation unit. The driving circuit performs control such that a phase of the drive signal V(t) provided to a first pixel group in the plurality of pixels and a phase of the drive signal V(t) provided to a second pixel group in the plurality of pixels are mutually inverted. 1. A spatial light modulator comprising:a modulator including a plurality of pixels, and configured to modulate a phase or an intensity of incident light in each pixel according to an amplitude of a drive signal changing periodically with time; anda driving circuit configured to provide the drive signal to the modulator, whereinthe driving circuit is configured to perform control such that a phase of the drive signal provided to a first pixel group in the plurality of pixels and a phase of the drive signal provided to a second pixel group in the plurality of pixels are mutually inverted.2. The spatial light modulator according to claim 1 , wherein the modulator includes a liquid crystal layer.3. The spatial light modulator according to claim 1 , wherein the driving circuit is configured to perform control such that an area of the first pixel group and an area of the second pixel group in an irradiation region of the incident light are equal to each other.4. The spatial light modulator according to claim 1 , wherein the driving circuit is configured to variably control a boundary line between the first pixel group and the second pixel group.5. A light modulation apparatus comprising:{'claim-ref': {'@idref': 'CLM-00004', 'claim 4'}, 'the spatial light modulator according to ; and'}a photodetector configured to detect an intensity of light after modulation, whereinthe driving circuit is ...

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Номер записи: 80

18-02-2016 дата публикации

Multiple laminar flow-based particle and cellular separation with laser steering

Номер: US20160047777A1

Автор: Amy Anderson, Daniel Mueth, Jessica Shireman, Joseph Plewa, Lewis Gruber, Neil Rosenbaum

Принадлежит: Premium Genetics UK Ltd

The invention provides a method, apparatus and system for separating blood and other types of cellular components, and can be combined with holographic optical trapping manipulation or other forms of optical tweezing. One of the exemplary methods includes providing a first flow having a plurality of blood components; providing a second flow; contacting the first flow with the second flow to provide a first separation region; and differentially sedimenting a first blood cellular component of the plurality of blood components into the second flow while concurrently maintaining a second blood cellular component of the plurality of blood components in the first flow. The second flow having the first blood cellular component is then differentially removed from the first flow having the second blood cellular component. Holographic optical traps may also be utilized in conjunction with the various flows to move selected components from one flow to another, as part of or in addition to a separation stage.

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Номер записи: 81

24-02-2022 дата публикации

Spatial light modulator

Номер: US20220060667A1

Автор: Jamieson Christmas

Принадлежит: Dualitas Ltd

A liquid crystal on silicon spatial light modulator comprising an array of light-modulating pixels and a controller are disclosed. Each light-modulating pixel of the array comprises liquid crystal and is associated with a respective flip-flop. The controller receives a hologram of an image comprising a plurality of hologram pixels. Each hologram pixel comprises a respective n-bit hologram pixel value. The controller drives each light-modulating pixel in accordance with a respective hologram pixel value of the hologram. There is a one-to-n pixel correlation between the hologram and the light-modulating pixels. The flip-flops of each contiguous group of n light-modulating pixels are connected in series to form a shift register. During operation of the shift register, the n-bit hologram pixel value associated with each contiguous group of n light-modulating pixels is provided to each light-modulating pixel one bit at a time over the course of at least n clock cycles.

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Номер записи: 82

16-02-2017 дата публикации

IMAGE PHASE RETRIEVAL

Номер: US20170045859A1

Автор: Christmas Jamieson

Принадлежит:

A method of processing a pixellated image to retrieve a phase distribution representative of the image. The phase distribution representative of the image is in the Fourier domain. The method includes padding the image pixels with padding, or non-image, pixels to increase the total number of pixels in the pixellated image. The method further includes processing the padding or non-image pixels differently to the image pixels in each iteration of the iterative method. 1. (canceled)2. An iterative method of processing a pixellated image comprising image pixels to retrieve a phase distribution representative of the image in the Fourier domain , the method comprising:padding the image pixels with non-image pixels to increase the total number of pixels in the pixellated image, wherein the values of the non-image pixels comprises an initial random noise field;associating each pixel of the pixellated image with a phase value to form a first data set having plural elements, each element of the first data set having amplitude information and phase information; and performing a Fourier transform of the first data set to produce a second data set having plural elements, each element of the second data set having amplitude and phase information;', 'quantizing the phase information from the second data set;', 'forming a third data set having plural elements, each element of the third data set having amplitude and phase information, the phase information being derived from the second data set and;', 'inverse Fourier transforming the third data set to produce a fourth data set having plural elements, each element of the fourth data set having amplitude and phase information;', 'overwriting the amplitude and/or phase information of the fourth data set to produce a fifth data set having plural elements, each element of the fifth data set having amplitude and phase information;', 'wherein overwriting comprises processing the non-image pixels differently to the image pixels and ...

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Номер записи: 83

15-02-2018 дата публикации

Lighting Device for Headlights with a Phase Modulator

Номер: US20180046138A1

Автор: Dackson Masiyano, Jamieson Christmas, Mikael Collin

Принадлежит: Dualitas Ltd

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.

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Номер записи: 84

15-02-2018 дата публикации

SCANNED COARSE INTEGRAL HOLOGRAPHIC DISPLAY

Номер: US20180046140A1

Автор: CHEN JHEN-SI, Chu Daping, Smithwick Quinn Y.

Принадлежит:

A holographic display system for generating a super hologram with full parallax in different fields of view in the horizontal and vertical directions. The display system includes assemblies or subsystems each adapted to combine holographic displays and coarse integral displays to produce or display a coarse integral hologram. Briefly, the display system described herein teaches techniques for enhancing operations of coarse integral holographic (CIH) displays. The enhanced CIH displays may utilize ganged scanners, may operate scanners to provide boustrophedon scanning, may be configured to add color information such by view sequential color hologram display and scanning, may replace or supplement X-Y scanning abilities with a resonant scanner, and may replace physical lenslet arrays by generating and displaying a holographic lenslet for each elemental hologram used to create the super hologram. 1. A scanning coarse integral holographic display , comprising:a scanning relay comprising a spatial light modulator displaying elemental holograms of a 3D scene, an array of lenslets, and a scanner assembly operable to direct each of the elemental holograms behind one of the lenslets; anda coarse integral optics assembly positioned between the scanning relay and a viewing space for the holographic display,wherein the coarse integral optics assembly is adapted to combine the elemental holograms into a single hologram viewable in a hologram image plane.2. The holographic display of claim 1 , wherein the scanner assembly includes a resonant scanner to provide vertical dither.3. The holographic display of claim 2 , wherein the scanner assembly includes an X-Y scanner receiving output light of the resonant scanner and scanning the elemental holograms behind the lenslets and wherein the scanner assembly further includes at least one relay lens disposed between the resonant scanner and the X-Y scanner.4. The holographic display of claim 1 , wherein the scanner assembly includes an X ...

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Номер записи: 85

03-03-2022 дата публикации

HOLOGRAPHIC DISPLAY APPARATUS AND OPERATING METHOD THEREOF

Номер: US20220066391A1

Автор: Lee Hongseok, SUNG Geeyoung, YANG Daeho

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

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.

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Номер записи: 86

14-02-2019 дата публикации

Optical system

Номер: US20190049731A1

Автор: Alexander Knuettel

Принадлежит: Agrippa Holding & Consulting GmbH

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.

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Номер записи: 87

14-02-2019 дата публикации

LIGHT GUIDE PLATE, BACKLIGHT UNIT, AND HOLOGRAPHIC DISPLAY APPARATUS INCLUDING THE BACKLIGHT UNIT

Номер: US20190049739A1

Автор: An Jungkwuen, Choi Chilsung, KIM Sunil, Lee Hongseok, LEE Sunghoon, SONG Hoon

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided are a light guide plate, a backlight unit, and a holographic display apparatus including the backlight unit. The backlight unit includes a light source and a light guide plate including two or more layers configured to guide light from the light source, wherein the two or more layers are configured to control a ratio of light transmitted therethrough to light reflected thereby. 1. A backlight unit comprising:a light source: anda light guide plate comprising at least two layers configured to guide light from the light source, wherein each of the at least two layers is configured to control a ratio of light reflected thereby and light transmitted therethrough.2. The backlight unit of claim 1 , wherein the at least two layers comprises a first layer claim 1 , a second layer claim 1 , and a third layer claim 1 , wherein a refractive index of the second layer is different than at least one of a refractive index of the first layer and a refractive index of the third layer.3. The backlight unit of claim 2 , wherein a difference between a refractive index of the first layer and a refractive index of the second layer is at least about 0.2.4. The backlight unit of claim 2 , wherein the refractive index of the second layer is different than the refractive index of the third layer.5. The backlight unit of claim 4 , wherein a difference between the refractive index of the second layer and the refractive index of the third layer is at least about 0.2.6. The backlight unit of claim 2 , wherein each of the refractive index of the first layer claim 2 , the refractive index of the second layer claim 2 , and the refractive index of the third layer is about 1.2 to about 2.0.7. The backlight unit of claim 2 , wherein a thickness of the first layer and a thickness of the third layer are each about 0.1 mm to about 5 mm.8. The backlight unit of claim 2 , further comprising a reflective layer disposed on the first layer.9. The backlight unit of claim 2 , wherein the second layer ...

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Номер записи: 88

14-02-2019 дата публикации

HOLOGRAPHIC DISPLAY SYSTEM AND HOLOGRAPHIC DISPLAY METHOD

Номер: US20190049898A1

Автор: Qiao Yong, SHI Bingchuan, WU Xinyin, ZHANG Yuxin

Принадлежит:

A holographic display system and a holographic display method are disclosed. By utilizing the shift of at least one of the light source module and the spatial light modulator, a holographic image can be provided to a plurality of stationary or moving observers over a wide range. The holographic display system includes a light source module for generating a coherent beam; a spatial light modulator for generating a holographic image using the coherent beam; a position detecting device for detecting an eye position of at least one observer; and an actuating device capable of shifting at least one of the light source module and the spatial light modulator based on the eye position of the at least one observer, thereby projecting the holographic image to the eye position of the at least one observer. 1. A holographic display system , comprising:a light source module for generating a coherent beam;a spatial light modulator for generating a holographic image using the coherent beam;a position detecting device for detecting an eye position of at least one observer; andan actuating device capable of shifting at least one of the light source module and the spatial light modulator based on the eye position of the at least one observer, thereby projecting the holographic image to the eye position of the at least one observer.2. The holographic display system according to claim 1 , further comprising: a liquid crystal lens array arranged on a light exit side of the spatial light modulator.3. The holographic display system according to or claim 1 , wherein the actuating device is a three-dimensional actuating device.4. The holographic display system according to or claim 1 , wherein the actuating device is a piezoelectric actuating device or a microelectromechanical system actuating device.5. The holographic display system according to or claim 1 , further comprising: an eye diagram processing device for obtaining a fixation point coordinate of the at least one observer based on ...

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Номер записи: 89

14-02-2019 дата публикации

WIDE FIELD OF VIEW HYBRID HOLOGRAPHIC DISPLAY

Номер: US20190049899A1

Автор: GELMAN Shaul Alexander, KAUFMAN Aviad, ROTSCHILD Camel

Принадлежит:

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 method for displaying a wide Field of View (FoV) scene including an interference based holographic image within the scene , comprising:setting pixel values in a Spatial Light Modulator (SLM) for producing a Computer Generated Hologram (CGH);illuminating the SLM with coherent light, thereby producing a first interference based holographic image;setting pixel values in a first additional SLM for producing a first additional image;illuminating the first additional SLM, thereby producing a first additional image; andallowing a real view of the real world to be viewable through and around the first holographic image and the first additional image,whereinthe first holographic image is projected toward a viewer's fovea;the first additional image is displayed as part of the scene and adjacent to the first holographic image; andthe real view of the real world is also viewable as part of the scene.2. The method of claim 1 , and further comprising:tracking a viewer's pupil; andcontrolling the displaying the first holographic image to direct the first holographic image to the viewer's pupil using a direction-adjustable optical element.3. The method of claim 1 , in which ...

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Номер записи: 90

25-02-2021 дата публикации

Hologram Replicator Assemblies For Head Up Displays Including Continuous Transmission Neutral Density Filters And Corrective Leveling Elements

Номер: US20210055549A1

Автор: CHANG Kai-Han, Seder Thomas A.

Принадлежит:

A replicator assembly includes reflective, transmissive, and transparent elements. The reflective element receives and reflects a hologram of a HUD system. The transmissive element includes a partially transmissive portion that receives a reflection of the hologram from the reflective element, outputs N replications of the hologram, and reflects N−1 replications of the hologram. The partially transmissive portion is implemented as a continuous transmission neutral density filter across different phase regions. The phase regions of the partially transmissive portion correspond respectively to the N replications. N is an integer greater than or equal to 2. The reflective element reflects the N−1 replications of the hologram. The transparent element is disposed between the reflective and transmissive elements and guides the N replications of the hologram between the reflective and transmissive elements. The reflective, transmissive and transparent elements are implemented as a replicator and collectively provide the N replications of the hologram. 1. A replicator assembly comprising:a first reflective element configured to receive and reflect a first hologram generated by one or more light sources and one or more modulators of a head up display system;a first transmissive element comprising a partially transmissive portion, wherein the partially transmissive portion is configured to receive a reflection of the first hologram from the first reflective element, output N replications of the first hologram, and reflect at least N−1 replications of the first hologram, wherein the partially transmissive portion is implemented as a continuous transmission neutral density filter across different phase regions, wherein the phase regions of the partially transmissive portion correspond respectively to the N replications, where N is an integer greater than or equal to 2, andwherein the first reflective element is configured to reflect at least the N−1 replications of the first ...

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Номер записи: 91

25-02-2021 дата публикации

HOLOGRAM DISPLAY DEVICE

Номер: US20210055690A1

Автор: KIM Sang-Ho

Принадлежит:

A hologram display device includes a light source unit that generates light, a spatial light modulation panel that spatially modulates light received from the light source unit and generates diffracted light, and an optical unit that generates a holographic image using the diffracted light. The spatial light modulation panel includes first color filters, second color filters, and third color filters. The number of the second color filters is greater than the number of each of the first and third color filters. During a turned-on state of the spatial light modulation panel, a distance between second color images displayed through the second color filters is substantially equal to a distance between first color images displayed through the first color filters and a distance between third color images displayed through the third color filters. 1. A hologram display device , comprising:a light source unit that generates light;a spatial light modulation panel that spatially modulates the light received from the light source unit and generates diffracted light; andan optical unit that generates a holographic image using the diffracted light, a plurality of first color filters;', 'a plurality of second color filters; and', 'a plurality of third color filters,, 'wherein the spatial light modulation panel compriseswherein a number of the second color filters is greater than a number of each of the first and third color filters, and during a turned-on state of the spatial light modulation panel, a distance between second color images displayed through a first group of the second color filters is substantially equal to a distance between first color images displayed through the first color filters and a distance between third color images displayed through the third color filters, andwherein black gray scale images are displayed through a second group of the second color filters during a turned-on state of the spatial light modulation panel.2. The hologram display device of ...

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Номер записи: 92

25-02-2021 дата публикации

Holographic Projector

Номер: US20210055691A1

Автор: Chowdhury Sahar, Collin Mikael, Wengierow Michal

Принадлежит:

A holographic projector comprises an image processing engine, a hologram engine, a display engine and a light source. The image processing engine is arranged to receive a source image for projection and generate a plurality of secondary images from the source image. The source image comprises pixels. Each secondary image comprises fewer pixels than the source image. A first secondary image has more pixels that a second secondary image. The hologram engine is arranged to determine, such as calculate, a hologram corresponding to each secondary image to form a plurality of holograms. Thus, a first hologram corresponding to the first secondary image has more pixels than a second hologram corresponding to the second secondary image. The display engine is arranged to display each hologram in turn on the display device. The light source is arranged to Illuminate each hologram during display to form a holographic reconstruction corresponding to each secondary image on a replay plane. 1. A holographic projector comprising: receive a source image for projection, wherein the source image comprises pixels; and', 'generate first and second secondary images from the source image, wherein each secondary image comprises fewer pixels than the source image and wherein the first secondary image has more pixels than the second secondary image;, 'an image processing engine arranged toa hologram engine arranged to determine first and second holograms corresponding to the first and second secondary images respectively, such that the first hologram has more pixels than the second hologram;a display engine arranged to display each hologram in turn on a display device; anda light source arranged to Illuminate each hologram during display to form a holographic reconstruction corresponding to each secondary image on a replay plane.2. A holographic projector as claimed in wherein the image processing engine is arranged to derive the first secondary image from a central region of the source ...

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Номер записи: 93

25-02-2021 дата публикации

Lighting System

Номер: US20210055692A1

Автор: Christmas Jamieson

Принадлежит:

There is provided a lighting system for a vehicle. The lighting system comprises a holographic projector and a light distribution system. The holographic projector comprises a hologram engine and a spatial light modulator. The hologram engine is arranged to output holograms. The spatial light modulator is arranged to display each hologram and spatially-modulate light in accordance with each hologram. The spatially-modulated light forms a holographic reconstruction, corresponding to each hologram, on a replay plane. The light distribution system comprises a plurality of optical fibres. Each optical fibre comprises an input optically-coupled to respective sub-area of the replay plane and an output optically coupled with an illumination sub-system of the vehicle. 1. A lighting system for a vehicle , the system comprising: a hologram engine arranged to output holograms;', 'a spatial light modulator arranged to display each hologram and spatially-modulate light in accordance with each hologram, wherein the spatially-modulated light forms a holographic reconstruction, corresponding to each hologram, on a replay plane; and', 'a light distribution system comprising a plurality of optical fibres wherein each optical fibre comprises an input optically-coupled to respective sub-area of the replay plane and an output optically coupled with an illumination sub-system of the vehicle., 'a holographic projector comprising2. A lighting system as claimed in wherein the holographic reconstruction illuminates at least one sub-area of the replay plane optically-coupled to an optical fibre of the plurality of optical fibres.3. A lighting system as claimed in wherein the hologram engine is arranged to output a first hologram at a first time and a second hologram at a second time not equal to the first time claim 1 , wherein the first hologram forms a first holographic reconstruction which illuminates at least first sub-area of the replay plane optically-coupled to a first optical fibre of ...

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Номер записи: 94

13-02-2020 дата публикации

Holographic Lidar System and Method

Номер: US20200049828A1

Автор: Christmas Jamieson, Collin Mikael, Masiyano Dackson

Принадлежит:

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. 128-. (canceled)29. A method for performing a light detection and ranging (“LIDAR”) measurement on a scene , comprising:providing a beam of incident light;illuminating an addressable spatial light modulator with the beam of incident light;providing, using the spatial light modulator, a selectable phase delay distribution to the beam of incident light with the addressable spatial modulator to provide an exit beam, the phase delay distribution comprising a representation of a pattern of illumination in the hologram domain, andperforming holographic transformation of the pattern of illumination in the hologram domain, such that the phase-modulated light of the exit beam forms an image in the spatial domain; andprojecting the image in the spatial domain to form a pattern of illumination in space, the pattern of illumination in space illuminating the scene.30. The method of claim 29 , further comprising detecting illumination reflected from the scene claim 29 , wherein the detection of illumination reflected from the scene comprises capturing an image of the scene illuminated with the pattern of illumination in space.31. The method of claim 30 , further comprising comparing the captured image with the projected pattern of illumination.32. The method of claim 30 , further comprising detecting an abnormality in the scene based on the detected illumination.33. The method of claim 32 , wherein detecting the abnormality ...

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Номер записи: 95

13-02-2020 дата публикации

SLIM BACKLIGHT UNIT FOR HOLOGRAPHIC DISPLAY DEVICE AND HOLOGRAPHIC DISPLAY DEVICE INCLUDING THE SAME

Номер: US20200050146A1

Автор: An Jungkwuen, Choi Chilsung, DUBININ German B., KIM Sunil, KIM Young, Kim Yunhee, Lee Hongseok, MOROZOV Alexander V., SONG Hoon

Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A backlight unit for a binocular-holographic display device and a holographic display device including the same are provided. The backlight unit includes a light source unit which outputs light, a first beam expansion unit which expands, in a first direction, the light output from the light source unit, a second beam expansion unit which expands, in a second direction perpendicular to the first direction, the light output from the first beam expansion unit, and a beam deflection unit which diffracts light incident on the first beam expansion unit. The holographic display device includes the backlight unit, a field lens, and a spatial light modulator. 1. A backlight unit comprising:a light source configured to emit light;a first beam expander configured to expand the light emitted from the light source in a first direction, the first beam expander comprising a first light guide plate which transmits light incident thereon;a second beam expander configured to expand the light output from the first beam expander in a second direction perpendicular to the first direction, the second beam expander comprising a second light guide plate which transmits light incident thereon; anda beam deflector disposed on an optical path between the light source and the first beam expander, the beam deflector being configured to divide the light emitted from the light source into a first light beam and a second light beam, which are traveling at different angles, and two-dimensionally control paths of the first light beam and the second light beam.2. The backlight unit of claim 1 , wherein the first beam expander comprises:an input coupler configured to transmit the first light beam and the second light beam into the first light guide plate; andan output coupler configured to emit the first light beam and the second light beam from the first light guide plate.3. The backlight unit of claim 2 , wherein the input coupler is disposed on an upper surface of the first light guide plate to ...

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Номер записи: 96

13-02-2020 дата публикации

Near-Eye Device

Номер: US20200050147A1

Автор: Dackson Masiyano, Jamieson Christmas

Принадлежит: Dualitas Ltd

There is provided a near-eye device for augmenting a real world view. The near-eye device comprises a spatial light modulator comprising an array of phase modulating elements arranged to apply a phase delay distribution to incident light. The device further comprises a beam combiner comprising a first optical input arranged to receive spatially modulated light from the spatial light modulator and a second optical input having a field of view of the real world.

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Номер записи: 97

15-05-2014 дата публикации

HOLOGRAPHIC IMAGING

Номер: US20140132998A1

Автор: Yamaichi Eiji

Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Technologies are generally described for generating a holographic image on a transparent screen such that a user can view another scenery image though the screen along with the generated holographic image. Example devices may include an ultraviolet light irradiation unit configured to irradiate an ultraviolet light towards a hologram generating unit. The holographic generating unit may be configured to generate a hologram image in response to the received ultraviolet light. Further, the light irradiation unit and the hologram generating unit may be operable to project the hologram image onto a transparent screen coated with a photochromic material. The light transmittance of the photochromic material coated on the transparent screen may change when a light beam with a specific frequency range is irradiated on the photochromic material. The example device may further include a hologram reconstruction light source configured to irradiate a hologram reconstruction light on the transparent screen. 1. A holographic imaging device , comprising:an ultraviolet light irradiation unit configured to irradiate an ultraviolet light; anda hologram generating unit configured to receive the ultraviolet light and generate a hologram image in response to the received ultraviolet light, wherein the ultraviolet light irradiation unit and the hologram generating unit are operable to project the hologram image onto a transparent screen coated with a photochromic material.2. The holographic imaging device of claim 1 , the ultraviolet light irradiation unit comprising a light source and an ultraviolet light passing filter.3. The holographic imaging device of claim 2 , the light source comprising a mercury vapor lamp or a Xenon arc lamp.4. The holographic imaging device of claim 1 , the hologram generating unit comprising a quartz glass plate coated with a photosensitive material.5. The holographic imaging device of claim 1 , the hologram generating unit comprising a transparent LCD (liquid ...

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Номер записи: 98

13-02-2020 дата публикации

HIGH LUMINANCE PROJECTION DISPLAYS AND ASSOCIATED METHODS

Номер: US20200053329A1

Автор: Damberg Gerwin, Richards Martin J., Todd Craig

Принадлежит: DOLBY LABORATORIES LICENSING CORPORATION

Projection displays include a highlight projector and a main projector. Highlights projected by the highlight projector boost luminance in highlight areas of a base image projected by the main projector. Various highlight projectors including steerable beams, holographic projectors and spatial light modulators are described. 1. A method for displaying images , comprising:spatially modulating light according to a desired image;Fourier transforming the light representing the desired image onto a Fourier plane; andattenuating or eliminating one or more frequency components of the Fourier transformed light by a mask positioned on the Fourier plane.2. The method of claim 1 , wherein the light is Fourier transformed onto the Fourier plane based on diffraction.3. The method of claim 1 , wherein the mask is configured to attenuate or eliminate Fourier components corresponding to one or more spatial frequencies.4. The method of claim 1 , wherein the mask is a fixed or controllable optical mask.5. The method of claim 1 , further comprising:emitting the light by a coherent light source.6. The method of claim 5 , wherein the coherent light source includes a laser and a beam expander.7. The method of claim 1 , wherein the light is spatially modulated according to the desired image by a spatial light modulator.8. The method of claim 1 , wherein the light is Fourier transformed onto the Fourier plane by a phase modulating panel.9. The method of claim 8 , wherein driving values for pixels of the phase modulating panel is determined by an inverse Fourier transform of a desired light distribution.10. The method of claim 8 , wherein phase-shifting effect of the phase modulating panel is spatially varied according to real component of an inverse Fourier transform of the desired image.11. A display system claim 8 , comprising:a spatial light modulator configured to spatially modulate light according to a desired image;a Fourier transform component configured to Fourier transform the ...

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Номер записи: 99

10-03-2022 дата публикации

HOLOGRAPHIC PROJECTOR

Номер: US20220075317A1

Автор: Cole Alexander

Принадлежит:

A projector arranged to project an image within a display area on a display plane. The image comprises a light feature. A light sensor is spatially separated from the display plane. In an aligned state, light forming the light feature of the image on the display plane is at least partially disposed around the light sensor. In the aligned state, substantially no light forming the light feature impinges on the light sensor. The aligned state defines a selected alignment between the display area and the display plane (i.e. a selected position of the display area on the display plane). 1. A projector arranged to project an image within a display area on a display plane , wherein the image comprises a light feature , and the projector comprises a light sensor spatially separated from the display plane , wherein the display area and light sensor are aligned such that light forming the light feature of the image on the display plane is at least partially disposed around the light sensor , without substantially impinging thereon , when operated in an aligned state , wherein the aligned state defines a selected alignment between the display area and the display plane.2. A projector as claimed in wherein the light sensor is disposed upstream of the display plane.3. A project as claimed in wherein the image is substantially focused on the display plane.4. A projector as claimed in wherein the light feature comprises a dark region at least partially surrounded by a light region.5. A projector as claimed in wherein the light feature comprises a hollow light feature or a part thereof claim 4 , optionally comprising one of: a hollow circle or ring of light; a hollow polygon of light; an arc of light claim 4 , and an intersection of edges of a polygon of light.6. A projector as claimed in wherein claim 4 , when operated in the aligned state claim 4 , a reference point in the dark region of the light feature is coincident with a reference point of the light sensor.7. A projector as ...

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Номер записи: 100