Vehicle lighting system

Wedges for light transformation

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

Signal light

ELECTRONIC DEVICE STACK ASSEMBLY

An electronic device includes a stack assembly and a cover glass. The stack assembly includes an electrophoretic display sub-assembly for rendering content, a front light sub-assembly comprising a light guide, a light FPC, and a plurality of light sources, and a capacitive touch sensing sub-assembly for detecting touch inputs. A yellow-pigmented tape is applied over the light sources and an edge of the light guide. A stiffener member is coupled to the light FPC opposite the yellow-pigmented tape.

DISPLAY COMPRISING AN OPTICAL WAVEGUIDE FOR DISPLAYING AN IMAGE

A display apparatus for use in displaying an image to a viewer (4), comprising an optical waveguide (8) arranged to receive image-bearing light (2) into the optical waveguide to guide the received image-bearing light therealong to an output part (5) of the optical waveguide for output therefrom. A combiner (70) is arranged adjacent to the output part of the optical waveguide for reflecting image-bearing light output by the waveguide in a direction which passes back through the optical waveguide and for allowing light (6) from an external scene to pass through the combiner in said direction through the optical waveguide to combine with the reflected image-bearing light so that the image-bearing light overlays light from the external scene for viewing by a viewer.

BACKLIGHT FOR LIQUID CRYSTAL DEVICES

A backlight system for liquid crystal device display is equipped with a dual lighting system for day viewing and compatible with night vision systems. The day lighting system uses conventional fluorescent or incandescent lamps for full color display during daytime use. The night lighting system uses a light source which is either filtered to remove infrared and near infrared wavelengths or which is chosen from a class of sources which does not emit such wavelengths. The day lighting system is disabled while the night system is in use.

PANEL ASSEMBLY WITH INTEGRATED STOP SIGNAL

A panel assembly (10) for an automotive vehicle has a transparent panel (12) having opposing first (14) and second (16) surfaces. A portion of the first surface includes refractive structure (18) integral with the panel (12). At least one light source (22) is positioned at an edge of the panel for introducing light into the panel (12). The refractive structure (18) reflects light from the light source (22) out through a portion of the second surface (16). A film laminate (20) is positioned generally opposite the refractive structure (18). When the light source (22) is operatively connected to a vehicle braking system and the film laminate (20) is red, the panel assembly (10) will indicate a braking condition.

Lichtreklameapparat.

Dispositif lumineux.

Anzeigeeinrichtung zur leuchtenden Wiedergabe eines Zeichens

DEVICE LIGHT PANELS.

NIGHT VISION EQUIPMENT (S) COMPATIBLE LIGHTING DEVICE WITH DAY AND NIGHT LIGHT LATERAL INJECTION WINDOW

APPAREIL LUMINEUX

APPAREIL LUMINEUX COMPRENANT AU MOINS UN PANNEAU TRANSPARENT ET AU MOINS UNE SOURCE LUMINEUSE AGENCEE POUR ILLUMINER LE PANNEAU PAR AU MOINS UNE DE SES TRANCHES. CET APPAREIL COMPREND UNE PREMIERE PLAQUE DE PROTECTION 10 AGENCEE SENSIBLEMENT PARALLELEMENT A LA GRANDE FACE DU PANNEAU 2 OPPOSEE A L'OBSERVATEUR 8 ET A COTE DE CETTE DERNIERE, LA LUMIERE PROVENANT DE LA SOURCE LUMINEUSE 6 ETANT ARRETEE SUR LA TRANCHE DE CETTE PLAQUE 10. L'INVENTION EST APPLICABLE NOTAMMENT DANS LE DOMAINE DE LA FABRICATION D'ENSEIGNES LUMINEUSES.

Improvements with the signs and indicator lights

Illuminated advertising display sign - has plate between light and printed pane to regulate light levels

NIGHT VISION EQUIPMENT (S) COMPATIBLE LIGHTING DEVICE WITH DAY AND NIGHT LIGHT LATERAL INJECTION WINDOW

Luminous publicity panel with coloured inscriptions - employs coloured areas at light source transmitting light towards inscriptions in transparent panels

Backlight display for e.g. military helicopter, has light sources in which one source radiates in visible spectrum and another source radiates in spectrum having radiation pattern, and inverter type switch to light one of sources

L'invention a pour objet un écran rétro-éclairé pour équiper les cockpits d'aéronefs et de véhicules terrestres ou marins pouvant être utilisé de jour comme de nuit. Un écran (1) est éclairé par l'arrière par une source de lumière (2) à spectre large en mode jour et en mode nuit par une source de lumière (3) à spectre limité de telle sorte qu'elle n'émette aucun rayonnement dans le domaine de sensibilité des tubes à intensification de lumière qui équipent les jumelles de vision nocturne (10) dont peuvent se servir les pilotes des aéronefs ou autres véhicules, le passage d'un mode à l'autre se faisant par un simple commutateur ou même automatiquement. L'invention s'applique chaque fois qu'il faut afficher des informations sur un écran de jour comme de nuit et qu'il faut pouvoir utiliser en même temps la nuit des jumelles de vision nocturne à intensification de lumière.

광학 부재 및 표시장치

... 실시예에 따른 표시 장치는, 광원; 상기 광원으로부터 출사되는 광의 파장을 변환시키는 광 변환층; 상기 광 변환층 하부의 도광판; 상기 광 변환층으로부터 광이 입사되는 표시 패널; 상기 광 변환층 상에 배치되는 보호막; 상기 광 변환층을 지지하는 제 1 기판; 및 상기 광 변환층 상에 배치되는 제 2 기판을 포함하고, 상기 광 변환층은 상기 도광판 및 상기 표시 패널 사이에 배치되고, 상기 제 1 기판은 베이스층 및 볼록부들을 포함하고, 상기 제 2 기판은 폴리에틸렌테레프탈레이트(PET)를 포함하고, 상기 베이스층은 상기 볼록부들 및 상기 광 변환층을 지지하고, 상기 볼록부들은 상기 베이스층과 상기 광 변환층 사이에 위치하고, 상기 제 1 기판 상에는 상기 볼록부들에 의해 요철 패턴이 형성되고, 상기 요철 패턴은 볼록부들 사이의 오목부들을 포함하고, 상기 광 변환층은 상기 볼록부들 및 상기 오목부들에 대응하는 오목한 면 및 볼록한 면을 포함하고, 상기 광 변환층은 호스트 및 상기 호스트 내에 배치되는 복수 개의 양자점들을 포함하고, 상기 제 2 기판과 마주보는 상기 광 변환층의 면은 평평하고, 상기 볼록부의 직경은 1㎛ 내지 1㎜이다.

메타-물질로 코팅된 도파관이 있는 디스플레이

... 디스플레이 광을 수광하고 디스플레이 광을 광도파관에 따른 유도된 전파를 위한 각도로 회절시키도록 배치되는 제 1 회절부를 포함하는 광도파관을 포함하는 광학 디스플레이를 생산하는 장치가 개시된다. 도파관의 제 2 회절부는 광도파관에 의하여 제 1 회절부에 광학적으로 커플링되고, 광을 제 1 회절부로부터 수광하고 광도파관으로부터의 출력을 위한 각도로 회절시키도록 배치된다. 유도 광이 내부로 반사되는 도파관의 외면은 1.0(1)보다 작은 값의 굴절률을 가지는 메타-재료로 코팅된다.

LIGHT-EMITTING DEVICE

A light-emitting device (100) comprising four light sources (101, 102, 103, 104) in quadrangular arrangement, and a collimating element (110) arranged to collimate and mix light emitted by said light sources is provided. The collimating element has a receiving side (111) for receiving light from said light sources and an opposite output side (112), and comprises two intersecting V-shaped profile surfaces (120, 130), the edges of said V-shaped profile surfaces (125, 135) being arranged towards said receiving face (111). The collimating element is capable of collimating the light from the four light sources and obtain a good color mixing, such that light from each light source is collimated to essentially the same degree. © KIPO & WIPO 2009 ...

FLUORESCENT IMAGE DEVICE AND DRIVING METHOD USING MULTI-CHANNEL NEAR INFRARED RAY TUNABLE FILTER

The present invention aims to provide a fluorescent image device and a driving method using a multi-channel near infrared ray tunable filter, which are capable of measuring a change in a fluorescent substance and a change in a change imaging acquisition wavelength of a light source by using a single filter structure and an imaging system through a filter that is tunable in the wavelength. To this end, the present invention includes: a laser source for outputting laser light; a plurality of optical systems for irradiating an object to be measured with the laser light outputted to the laser source, and transmitting the fluorescence generated in the object to be measured, wherein the optical system includes a mirror; and a multi-channel tunable filter for controlling the transmission and reflection of various fluorescent wavelengths by using the change of a filter coating structure by electromagnetic force formed on a flexible substrate. COPYRIGHT KIPO 2017 ...

Phosphor based illumination system having a plurality of light guides and a display using same

An illumination system including a light source, light guides coupled to the light source, each including an input surface and an output surface, emissive material positioned to receive light from at least one light guide, and an interference reflector positioned such that the emissive material is between the output surfaces of the light guides and the interference reflector is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The interference reflector substantially transmits light having the second optical characteristic and substantially reflects light having the first optical characteristic.

Phosphor based illumination system having a long pass reflector and method of making same

An illumination system including a light source, a light guide including an output surface, emissive material positioned between the light source and the output surface of the light guide, and an interference reflector positioned between the emissive material and the output surface of the light guide is disclosed. The light source emits light having a first optical characteristic. The emissive material emits light having a second optical characteristic when illuminated with light having the first optical characteristic. The interference reflector substantially transmits light having the second optical characteristic and substantially reflects light having the first optical characteristic.

Conduit for coupling light source into thin waveguide film

This disclosure provides systems, methods and apparatus for increasing the efficiency of frontlight systems using thin waveguides. In one aspect, a narrowing reflective conduit can be used to condense light from a light source which is thicker than the waveguide, and inject it into the waveguide. A phosphor strip at the exit aperture of the narrowing reflective conduit can inject light with a diffuse directional profile independent of the directional profile of light within the narrowing reflective conduit.

Image display apparatus

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

Methods of producing slanted gratings with variable etch depths

Methods of producing gratings with trenches having variable height are provided. In one example, a method of forming a diffracted optical element may include providing an optical grating layer over a substrate, patterning a hardmask over the optical grating layer, and forming a sacrificial layer over the hardmask, the sacrificial layer having a non-uniform height measured from a top surface of the optical grating layer. The method may further include etching a plurality of angled trenches into the optical grating layer to form an optical grating, wherein a first depth of a first trench of the plurality of trenches is different than a second depth of a second trench of the plurality of trenches.

BACKLIGHT UNIT AND DISPLAY UNIT

A backlight unit (3) including an LED package (light source) (11) and an optical waveguide (14), wherein a light emission section (12) is provided in opposition to an incidence surface (14a) on the optical waveguide (14) at the optical waveguide side of the LED package (11) for emitting light from the LED package (11) toward the optical waveguide (14). On the light emission section (12), a dimension in the thickness direction of the optical waveguide (14) at the incidence surface side is configured to be equal to or less than a dimension in the thickness direction of the incidence surface (14a) on the optical waveguide (14), and a two-dimensional photonic crystal (12a) is used.

Slim waveguide coupling apparatus and method

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure.

DISPLAY DEVICE AND BACKLIGHT UNIT INCLUDED THEREIN

A display device includes a display panel, a backlight unit outputting light to the display panel, and an optical member refracting or reflecting the light output from the backlight unit and providing the display panel with the light. The backlight unit includes a light source emitting the light, a light guide plate scattering the light emitted from the light source and irradiating the scattered light to a front surface of the backlight unit, a reflective sheet reflecting the light, which is irradiated to a rear surface of the light guide plate, to the light guide plate, a quantum dot sheet for converting the light, which is irradiated to the front surface of the light guide plate, into a white light, and a light-converting material provided on an edge portion of the reflective sheet to convert the light into the white light.

BACKLIGHT UNIT PROVIDING UNIFORM LIGHT AND DISPLAY APPARATUS INCLUDING THE SAME

Provided is a backlight unit including a light source emitting coherent light, a light guide plate propagating the light emitted by the light source, an input grating inputting the light from the light source into the light guide plate, an output grating provided on one surface of the light guide plate and diffracting light incident from inside the light guide plate and outputting the light, in a direction toward the outside of the light guide plate, a first recuperation element provided on one surface of the light guide plate and including a first recycle grating, and a second recuperation element provided opposite to the first recuperation element and directing, to the first recuperation element, incident light that is propagating inside the light guide plate.

DOUBLE-SIDED IMAGING LIGHT GUIDE WITH EMBEDDED DICHROIC FILTERS

An imaging light guide has a waveguide formed as a coated substrate having first and second surface coatings. A first in-coupling diffractive optic on the first coating directs diffracted light of a first wavelength range into the waveguide along a first direction. A second in-coupling diffractive optic on the second coating directs diffracted light of a second wavelength range into the waveguide along a second different direction. A first dichroic patch between the first surface of the substrate and the first surface coating for (a) transmitting the first wavelength range, (b) transmitting the second wavelength range through a range of incidence angles, and (c) reflecting the second wavelength range through a higher range of incidence angles. A second dichroic patch between the second surface of the substrate and the second surface coating for transmitting the second wavelength range and reflecting the first wavelength range.

Backlight assembly and display device having the same

A backlight assembly includes a light source, a circuit board on which the light source is disposed, a light guide plate in which light emitted from the light source is incident on one surface and is emitted to the other surface, a bottom case configured to accommodate the light guide plate, and a wavelength conversion unit between the light source and the light guide plate. The wavelength conversion unit includes a frame having an opening, the rectangular frame including a top frame, a bottom frame and side frames extending substantially perpendicular to the top frame and the bottom frame, and connecting the top frame and the bottom frame.

OPTICAL APPARATUS, IMAGE DISPLAY APPARATUS, AND DISPLAY APPARATUS

An optical apparatus into which light emitted from an image forming apparatus enters, in which the light is guided, and from which the light is emitted includes a light guide plate , first deflection means , second deflection means , and third deflection means . The first deflection means deflects light incident on the light guide plate in such a manner that the light is totally reflected in the light guide plate . The second deflection means deflects the light that has propagated in the light guide plate by total reflection in such a manner as to cause the light to be emitted from the light guide plate . The third deflection means deflects the light that has been deflected by the first deflection means and that has propagated in the light guide plate by total reflection toward the second deflection means . An incident angle of the light emitted from a center point of an image forming region of the image forming apparatus on the light guide plate is an angle other than zero degrees, and a unit vector of light emitted from the center point of the image forming region of the image forming apparatus and a unit vector of this light at the time of emission from the light guide plate are opposite in direction. 1. An optical apparatus into which light emitted from an image forming apparatus enters , in which the light is guided , and from which the light is emitted , the optical apparatus comprising:a light guide plate in which the incident light propagates by total reflection and from which the incident light is emitted;first deflection means adapted to deflect the light entering into the light guide plate in such a manner that the light is totally reflected in the light guide plate;second deflection means adapted to deflect the light that has propagated in the light guide plate by total reflection in such a manner as to cause the light to be emitted from the light guide plate; andthird deflection means adapted to deflect the light that has been deflected by the first ...

PHOSPHOR BASED ILLUMINATION SYSTEM HAVING A SHORT PASS REFLECTOR AND METHOD OF MAKING SAME

An illumination system including a light source, a light guide including an output surface, a first interference reflector positioned between the light source and the output surface of the light guide, and emissive material positioned between the first interference reflector and the output surface of the light guide is disclosed. The light source emits light having a first optical characteristic. The first interference reflector substantially transmits light having the first optical characteristic and substantially reflects light having a second optical characteristic. The emissive material emits light having the second optical characteristic when illuminated with light having the first optical characteristic.

Light source system, ultraviolet curing device and curing method applicable to display panel

A light source system, an ultraviolet curing device and a curing method applicable to a display panel are provided. The light source system includes a light source assembly; a housing enclosing the light source assembly and having a first face, a second face and a third face, the first face having a first window, the second face having a second window, the third face being parallel to the display panel and located between the light source assembly and the display panel, and the third face having a third window; a first filter covering the first window, a second filter covering the second window and a third filter covering the third window; and a first reflecting element and a second reflecting element disposed outside the housing.

LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

A liquid crystal display device, includes a display panel; a light guide plate to transfer light to the display panel; and a light source module on a side surface of the light guide plate to supply light to the light guide plate, the light source module including a light source to generate light; and a quantum dot unit between the light source and the light guide plate, the quantum dot unit extending along the side surface of the light guide plate and including a tube member filled with a resin including quantum dots, the tube member including a sealing part. 1. A liquid crystal display device , comprising:a display panel;a light guide plate to transfer light to the display panel; and a light source to generate light; and', 'a quantum dot unit between the light source and the light guide plate, the quantum dot unit extending along the side surface of the light guide plate and including a tube member filled with a resin including quantum dots, the tube member including a sealing part., 'a light source module on a side surface of the light guide plate to supply light to the light guide plate, the light source module including2. The liquid crystal display device as claimed in claim 1 , wherein the light source includes a plurality of blue light emitting diodes on the side surface of the light guide plate.3. The liquid crystal display device as claimed in claim 1 , wherein the tube member includes a light transmissive material.4. The liquid crystal display device as claimed in claim 1 , wherein:the sealing part is a sealing neck that is sealed by heat, anda diameter of the sealing neck is smaller than a diameter of the tube member.5. The liquid crystal display device as claimed in claim 4 , wherein the sealing neck has an internal diameter that is larger than an external diameter of an injection needle for injecting the resin.6. The liquid crystal display device as claimed in claim 5 , wherein a shape of a cross-section of the sealing neck is one of a rectangle claim 5 ...

Backlight module structure

A backlight module structure is including a photoconductive element. The top of the photoconductive element has an outgoing face formed with numerous microstructures. An optical transforming layer is overlaid on the outgoing face of the photoconductive element between the outgoing face and the liquid crystal module. A solid powder material is mixed with a polymer binder and adhered to a transparent substrate to form the optical transforming layer. The solid powder material includes at least a lighting material.

Backlight module

A backlight module includes a backplane, a light guide plate arranged in the backplane, a backlight source arranged in the backplane and located at one side of the light guide plate, a quantum dot rail arranged between the backlight source and the light guide plate, and a retention rack that is fixedly mounted to the backplane to receive and retain a first side of the quantum dot rail. The retention rack includes a trough section in the form of a concave recess receiving and retaining the first side of quantum dot rail therein. The quantum dot rail has a second side that is opposite to the first side and a reflection sheet is attached to the second side of the quantum dot rail such that the reflection sheet is opposite to the trough section of the retention rack mounted to the backplane.

ILLUMINATION SYSTEM

An illumination system including a light guide element and at least one light source device is provided. The light source device includes a first light combination module disposed near the light guide element and having a first filter film, a second light combination module having a second filter film, at least one first light source, at least one second light source and at least one third light source. There is a gap between the first and second light combination modules. A first light from the first light source is reflected to the light guide element by the first filter film, and a second light from the second light source and a third light from the third light source pass through the first filter film. The second light is reflected to the light guide element by the second filter film, and the third light passes through the second filter film.

DIFFRACTIVE OPTICAL ELEMENTS WITH MITIGATION OF REBOUNCE-INDUCED LIGHT LOSS AND RELATED SYSTEMS AND METHODS

Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide. The in-coupling optical element can be truncated or have reduced diffraction efficiency along the propagation direction to reduce the occurrence of light loss due to re-bounce ...

Optoelektronisches Halbleiterbauelement und Modul mit einer Mehrzahl von derartigen Bauelementen

Es wird ein Halbleiterbauelement angegeben, das einen Halbleiterchip (1) umfasst, der eine zur Strahlungserzeugung geeignete aktive Schicht (1a) aufweist, die geeignet ist, Strahlung im blauen Wellenlängenbereich zu emittieren. Dem Halbleiterchip (1) ist in Abstrahlrichtung ein erster Konverter (3a) nachgeordnet, der eine Ce-Dotierung von umfasst. Zudem ist dem Halbleiterchip (1) in Abstrahlrichtung ein zweiter Konverter (3b) nachgeordnet, der eine Ce-Dotierung von höchstens 1,5% umfasst. Weiter ist ein Modul mit einer Mehrzahl derartiger Bauelemente angegeben.

Backlight module and display device

Display system with variable power reflector

A wearable augmented reality head-mounted display system can be configured to pass light from the world forward a wearer wearing the head-mounted system into an eye of the wearer. The head-mounted display system can include an optical display that is configured to output light to form an image. The system may include one or more waveguides that are disposed to receiving the light from the display. A variable power reflector can be disposed on the forward side of the one or more waveguides. The reflector can be configured to have an optical power that is adjustable upon application of an electrical signal.

Virtual/augmented reality system having reverse angle diffraction grating

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

Architectures and methods for outputting different wavelength light out of waveguides

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

Architectures and methods for outputting different wavelength light out of waveguides

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

Microlens collimator for scanning optical fiber in virtual/augmented reality system

A display subsystem for a virtual image generation system for use by an end user comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a collimation element mounted to a distal end of the optical fiber for collimating light from the optical fiber. The virtual image generation system further comprises a mechanical drive assembly to which the optical fiber is mounted to the drive assembly. The mechanical drive assembly is configured for displacing the distal end of the optical fiber, along with the collimation element, in accordance with a scan pattern. The virtual image generation system further comprises an optical waveguide input apparatus configured for directing the collimated light from the collimation element down the planar waveguide apparatus, such that the planar waveguide apparatus displays image frames to the end user.

COLD-CATHODE FLUORESCENT LAMP ASSEMBLY FOR LIGHTING APPLICATIONS

A compact and cost-efficient lamp assembly includes cold-cathode fluorescent lamps in a variety of edge-lit display sign applications specifically, in edge-lit emergency lighting signs. The lamp assembly includes in one self-contained module a lower housing unit and an upper housing unit shaped to cover the lower housing unit. The lower housing unit is divided into a lower frame and an upper frame disposed on top of the lower frame. The upper frame has at least two inverters disposed within. The lower frame is a parabolic shape reflector frame supporting at least two cathode lamps in line with the two inverters, each of which is connected to each lamp for providing high voltage to power up the lamps. Additionally, an edge-lit panel having a front and back side is disclosed in the present invention. The backside includes a semi-transparent frosted surface with a white opaque lamination glued on the frosted surface. A legend is printed on the front side using a first white layer and a colored ...

LIGHTED SIGN DEVICE

A lighted sign device includes a light source and at least two transparent panels in face-to-face relation. A face of each panel bears indicia and each panel has one of its edges facing the light source, so that these edges of the transparent panels are simultaneously illuminated by the light source. The edge of one of the panels is coloured and the edge of the other panel is colourless or of a different colour to that of the edge of the first panel. The panels are illuminated simultaneously by light passing through the edges thereof.

VIRTUAL/AUGMENTED REALITY SYSTEM HAVING REVERSE ANGLE DIFFRACTION GRATING

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

LIGHT SOURCE ASSEMBLIES

A light source assembly comprises a light pipe, a first color light source at a first tapered light collector, a second light source at a second tapered light collector, and at least a first dichroic filter operative to pass first color light and to reflect second color light toward a light output port. A light valve may be positioned to receive light from the light pipe. One or more light entrances to the light pipe may have a filter, e.g., a short wave pass filter, oriented in a plane generally parallel to the axial optical pathway.

DISPLAY COMPRISING AN OPTICAL WAVEGUIDE FOR DISPLAYING AN IMAGE

A display apparatus for use in displaying an image to a viewer (4), comprising an optical waveguide (8) arranged to receive image-bearing light (2) into the optical waveguide to guide the received image-bearing light therealong to an output part (5) of the optical waveguide for output therefrom. A combiner (70) is arranged adjacent to the output part of the optical waveguide for reflecting image-bearing light output by the waveguide in a direction which passes back through the optical waveguide and for allowing light (6) from an external scene to pass through the combiner in said direction through the optical waveguide to combine with the reflected image-bearing light so that the image-bearing light overlays light from the external scene for viewing by a viewer.

LIGHTING FIXTURES

Lighting fixtures which feature indicia illuminated more uniformally and with greater brightness than in conventional lighting fixtures. LEDs which operate at a higher frequency/shorter wavelength, such as blue LEDs, emit light which causes the transformation material to reemit, reradiate or emit light at a lower frequency/longer wavelength with increased brightness and uniformity. In the preferred embodiment of the invention, blue LEDs cause the transformation material to emit green light for bright and even illumination of indicia such as letters and chevrons in exit signs, and at a wavelength to which the human eye is serendipitously sensitive.

SIMULATED SOLAR LIGHT APPLICATION DEVICE

Backlight module

LIGHTING EQUIPMENT ACCORDING TO SEVERAL MODES

Luminous publicity panel with coloured inscriptions - employs coloured areas at light source transmitting light towards inscriptions in transparent panels

tRANSLUCENT ONEbOARD MIT iNSTALLATION FIXTURE ON AN LAMP

백라이트 모듈 및 디스플레이 장치

... 본 발명은 백라이트 모듈 및 디스플레이 장치를 제공한다. 백라이트 모듈은 제 1 표면과, 이러한 제 1 표면과 교차하는 제 2 표면을 구비하는 도광판, 제 1 라이트 바, 제 2 라이트 바 및 제 1 위치설정 칼럼을 포함한다. 제 1 표면 상에 제 1 위치설정 구멍이 형성된다. 제 1 라이트 바는 제 1 표면에 근접하게 배치된 제 1 기판, 이러한 제 1 기판 상에 배치된 제 1 청색 발광 다이오드, 및 제 1 표면에 근접하게 배치된 제 1 양자점 형광 튜브를 포함한다. 제 2 라이트 바는 제 1 표면에 근접하게 배치된 제 2 기판, 이 제 2 기판 상에 배치된 제 2 청색 발광 다이오드, 및 제 2 표면에 근접하게 배치된 제 2 양자점 형광 튜브를 포함한다. 제 1 위치설정 칼럼은 제 1 양자점 형광 튜브와 제 1 표면 사이에 배치되어, 그들 사이에 제 1 공간이 형성된다.

역각 회절 격자를 가진 가상/증강 현실 시스템

... 가상 이이미지 생성 시스템에 대한 디스플레이 서브시스템은 평면 도파관 장치, 광섬유, 광섬유의 말단 단부로부터 광을 방출하도록 구성된 적어도 하나의 광 소스, 및 광섬유가 비고정식 유연한 캔틸레버로서 장착되는 기계적 드라이브 어셈블리를 포함한다. 드라이브 어셈블리는 스캔 패턴에 따라 지주를 중심으로 광섬유의 말단 단부를 변위시키도록 구성되어, 방출된 광은 지주와 일치하는 길이방향 축으로부터 벗어난다. 디스플레이 서브시스템은 광섬유로부터의 광을 길이방향 축을 향해 수렴시키도록 구성된 광학 변조 장치, 및 광학 변조 장치로부터의 광을 평면 도파관 장치 아래로 지향시키도록 구성된 광학 도파관 입력 장치를 더 포함하여, 평면 도파관 장치는 하나 또는 그 초과의 이미지 프레임들을 최종 사용자에게 디스플레이한다.

OPTICAL FILM

The present invention relates to an optical film, a lighting device, and a display device. The optical film includes: a wavelength conversion layer including wavelength conversion particles; and a barrier polarizing plate having oxygen transmissivity ratio of 1 cc/m^2/day/atm or less in a temperature condition of 23°C and a relative humidity of 0%. COPYRIGHT KIPO 2017 ...

METHOD FOR GENERATING DIRECTIONAL RAYS AND APPARATUSES PERFORMING SAME

A method for generating directional rays and apparatuses performing the same are disclosed. According to an embodiment of the present invention, a backlight unit comprises: a light source for generating a ray; a light guide plate for transferring the ray to a display panel; and a directional pixel for generating a plurality of directional rays by scattering the ray. Each of the plurality of directional rays is respectively incident to each corresponding subpixel included in the display panel. COPYRIGHT KIPO 2017 (AA) Directional ray ...

Optical system

An optical system includes: a waveguide formed of optically transmissive material; a light outcoupling optical element on a surface of the waveguide, the light outcoupling optical element comprising: a multilevel metasurface including: a plurality of spaced-apart ridges formed of a first optically transmissive material; and a second optically transmissive material over and between the spaced apart ridges, wherein the second optically transmissive material has a higher refractive index than both the first optically transmissive material and the material forming the waveguide.

LIGHTING ASSEMBLY

A lighting assembly has a light source emitting light, an angular filter having a main surface, and a light guide having a main surface. The main surface of the filter is parallel to the main surface of the light guide. The filter may be configured to reflect light rays originating from the light source that are incident at small angles with respect to a direction normal to the main surface of the filter, and to transmit light rays originating from the light source that are incident at larger angles with respect to the direction normal to the main surface of the filter.

Backlight module and liquid crystal display including same

A backlight module includes a back plate having a side wall, a light guide plate disposed on the back plate and having a light incident surface, a light source disposed on the sidewall and adjacent to the light incident surface, a middle frame overlying the light guide plate and the light source, a first latching member disposed on a side of the middle frame facing toward the back plate and having a first groove, a second latching member disposed on a side of the back plate facing toward the middle frame and having a second groove, and a quantum bar, one end of which is latched in the first groove and the other end is latched in the second groove. The present invention also provides a LCD including the backlight module. The fixing manner of the quantum bar is simple and the cost is reduced.

OPTICAL ELEMENT AND LIGHT GUIDE ELEMENT

An object of the present invention is to provide: an optical element in which incident light can be transmitted or reflected at an angle in the predetermined direction and the wavelength dependence of the amount of transmitted light or reflected light is small; and an optical element including the optical element. The optical element according to the present invention comprises: an optically-anisotropic layer that is formed using a composition including a liquid crystal compound and an infrared absorbing colorant, in which the optically-anisotropic layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, and an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a minor axis direction is higher than an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a major axis direction.

Lighting apparatus and mobile terminal for controlling the same

A lighting apparatus and a mobile terminal controlling the same are disclosed. The lighting apparatus comprises a light source module generating light; and an electrochromic module varying a wavelength of light incident from the light source module, wherein the electrochromic module absorbs light of a specific one among wavelength ranges of the light incident from the light source module, in accordance with a lighting mode which is input. The mobile terminal controlling a lighting apparatus, which includes a light source module and an electrochromic module, comprises an input module receiving a user input; a communication module transmitting a lighting control signal to the lighting apparatus; a display module displaying a setup window for setting a lighting mode of the lighting apparatus; and a controller controlling the input module, the communication module and the display module.

Light coupling system and method

A light coupling system includes a waveguide, configured to receive light from at least two light sources and to internally reflect light therein; a diffraction grating, disposed upon the waveguide; and a switchable Bragg grating, disposed upon the waveguide. The diffraction grating is configured to couple light from at least one of the light sources into the waveguide, and the switchable Bragg grating is configured to selectively couple light out of the waveguide, such that the light from the at least two light sources is selectively directed along a common projection axis.

NVIS campatible backlight device and LCD using the same

A backlight device for a liquid crystal display containing a substantially planar light guide with a light emission surface and a light-collecting portion opposing the light emission surface. A pair of opposing side portions may define the periphery of the light guide. A first plurality of LEDs are placed so as to direct the emitted light into the light-collecting portion. An NVIS filter is preferably placed adjacent to at least one of the side portions. A second plurality of LEDs are placed to direct the emitted light through the NVIS filter and into a side portion of the light guide. Alternative embodiments can contain NVIS filters and LEDs along additional edge portions of the light guide. Some embodiments may use directing elements or slanted surfaces of the light guide to direct the light from the second plurality of LEDs into the edge portions of the light guide.

Light guide plate made of lead-free glass having a high refractive index and image display device using a light guide plate

Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.

Electric sign

Illumination device and display device

Provided is an illumination device that makes it possible to enhance utilization efficiency of light, and a display device that includes the illumination device. The illumination device includes: a light source that is configured to generate light of a first wavelength; a luminescent body that is configured to wavelength-convert the light of the first wavelength to light of a second wavelength, the second wavelength being different from the first wavelength; and a wavelength selective filter that is provided on a light-incident side of the luminescent body, the wavelength selective filter being configured to transmit the light of the first wavelength and to reflect the light of the second wavelength.

Thin, multi-focal plane, augmented reality eyewear

The present disclosure is directed to systems and methods for providing an augmented reality system having one or more optical structures capable of resolving virtual objects on one or more virtual object focal planes while providing a sufficient level of transmittivity and optical correction to simultaneously resolve real-world, physical, objects. The lens structures include a plurality of waveguide layers including waveguide layers demonstrating red-green sensitivity and waveguide layers demonstrating blue-green sensitivity. One or more plano-concave lenses may be used to draw virtual objects from a relatively distant first virtual object focal plane to a relatively closer second virtual object focal plane. One or more plano-convex lenses may be used to cause physical objects to appear at a distance from the augmented reality eyewear system approximately equal to the second virtual object focal plane.

Light emitting diode assembly and liquid crystal display device including the same

An LED assembly includes a supporting layer; LED chips arranged on a first surface of the supporting layer and spaced apart from each other; a coating layer formed over the LED chips and including a fluorescent substance, wherein the coating layer changes light emitted from the LED chips into a linear light source; and an electrode pattern layer formed on a second surface of the supporting layer and in selectively removed regions of the supporting layer and contacting the LED chips.

Wavelength multiplexing in waveguides

A stacked waveguide assembly can have multiple waveguide stacks. Each waveguide stack can include a plurality of waveguides, where a first waveguide stack may be associated with a first subcolor of each of three different colors, and a second waveguide stack may be associated with a second subcolor of each of the three different colors. For example, the first stack of waveguides can incouple blue, green, and red light at 440 nm, 520 nm, and 650 nm, respectively. The second stack of waveguides can incouple blue, green, and red light at 450 nm, 530 nm, and 660 nm, respectively.

Grating coupler

Embodiments presented in this disclosure generally relate to an optical device having a grating coupler for redirection of optical signals. One embodiment includes a grating coupler. The grating coupler generally includes a waveguide layer, a thickness of a waveguide layer portion of the waveguide layer being tapered, the thickness defining a direction, and a grating layer disposed above the waveguide layer and perpendicular to the direction where at least a grating layer portion of the grating layer overlaps the waveguide layer portion of the waveguide layer along the direction. Some embodiments are directed to grating coupler implemented with material layers above and a reflector layer below a grating layer, facilitating redirection and confinement of light that improves coupling loss and bandwidth. The material layers and reflector layer above and below the grating layer may be implemented with or without the waveguide layer being tapered.

RESIDUAL LAYER THICKNESS MODULATION IN NANOIMPRINT LITHOGRAPHY

An improved nanoimprint lithography process is presented in which the height is controlled by the thickness of a residual layer of resin leftover after ultraviolet curing and releasing of a nanoimprint mold from a resin layer. Moreover, the thickness of the residual layer may be controlled by a fill factor of either a nanoimprint mold that transfers its pattern to a resin layer disposed on a substrate, or by droplets of resin in the resin layer.

ANTI-REFLECTIVE COATINGS ON OPTICAL WAVEGUIDES

An anti-reflective waveguide assembly comprising a waveguide substrate having a first index of refraction, a plurality of diffractive optical elements disposed upon a first surface of the waveguide and an anti-reflective coating disposed upon a second surface of the waveguide. The anti-reflective coating preferably increases absorption of light through a surface to which it is applied into the waveguide so that at least 97 percent of the light is transmitted. The anti-reflective coating is composed of four layers of material having different indices of refraction that the first index of refraction and an imaginary refractive index less than 1×10−3but preferably less than 5×10−4.

LIGHT EXHIBITING DEVICE

A light exhibiting device capable of producing figures and letters of various shapes to a light synthesized color by a light reflection. The invention comprises: piled members (2) formed by piling a plurality of transparent plastic plates (1) of board shape; light reflecting portions (3) formed by engraving letters or figures on rear portion of the transparent plastic plate (1); coating layers (4) formed by coating polymer material being bigger in refraction rate than the plastic plate (1) on to surface of the plastic plate (1); colored portions (10) which are selectively applied with paint passing through only particularly colored light to all directions of side surface of each plastic plate (1) forming the piled members (2); supporting frames (6) for fixing by receiving the piled members (2); a plurality of partitioning walls (7) integrally formed to the supporting frame (6) which are interposed between the supporting frame (6) and the piled members (2) so that each independent chamber ...

СВЕТОИЗЛУЧАЮЩИЙ ПРИБОР

Изобретение относится к светоизлучающему прибору, содержащему источник света, выполненный с возможностью испускания во время работы света с первым спектральным распределением, и световод, выполненный с возможностью преобразования света с первым спектральным распределением в свет со вторым спектральным распределением. Заявленный светоизлучающий прибор содержит по меньшей мере один первый источник света, выполненный с возможностью испускания во время работы первого света с первым спектральным распределением, по меньшей мере один второй источник света, выполненный с возможностью испускания во время работы второго света со вторым спектральным распределением, световод, содержащий по меньшей мере одну первую поверхность входа света, по меньшей мере одну вторую поверхность входа света и первую поверхность выхода света, при этом упомянутая по меньшей мере одна первая поверхность входа света и первая поверхность выхода света простираются по отношению друг к другу под отличным от нуля углом, и люминесцентный ...

Improved display

A display is formed from an optical waveguide 1 and a series of diffraction gratings 2, 11, 14, 15 for accessing an expanded field of view for the waveguide display. A pair of diffraction gratings 2, 14 are arranged to receive and diffract light to an angle for guided propagation along the optical waveguide 1, and for output from the optical waveguide 1. A second pair of switchable diffraction gratings 11, 15, are switchable between a diffractive state and a non-diffractive state and selectively diffract the light to/from the first pair of diffraction gratings 2,14 to an angle which increases the field of view of the optical waveguide.

IMPROVEMENTS RELATING TO SIGNS

... 1284113 Edge-illuminated display panels INSTITUT AVTOMATIKI I TELEMEKHANIKI TEKHNICHESKOI KIBER. NETIKI 20 Aug 1969 41486/69 Heading G5C A sign is formed by a panel 1 the edge 3 of which is bevelled and coated with a light-reflecting material so that light from a source 4 lying in the plane of the panel is reflected in part towards an observer looking in the direction of the arrow A, and in part back into the panel. The edge 3, which coincides with and forms the outline of a pattern, may be coated with white enamel, and a cylindrical filter 5 may be used to colour the reflected light. A cover sheet 7 may be of glass, or of metal sheet having an openings corresponding to the pattern formed by the bevelled edge 3. A layer 8 of background paint may be applied to the sheet 1. The bevelled edge may form only a part of the pattern, a layer (13) of light-reflecting material being applied to the whole of the back of the panel (9), Figs. 3-4 (not shown); and there may be more than one light source ...

LAMINAR LIGHTING DEVICE AND WITH SUCH DEVICE PROVIDED INDICATOR

PANEL ASSEMBLY WITH INTEGRATED STOP SIGNAL

Brightness enhancement structure side-type LCD backlight module

Surface relief grating in an optical waveguide having a reflecting surface and dielectric layer conforming to the surface

The invention relates to a display device for displaying an image over a field of view. The device comprises: an optical arrangement for directing image bearing light from an image source so that the light has rays at a range of angles relative to an injection axis; and an optical waveguide having an input grating for diffracting into the waveguide said light over said range of angles such that all of the diffracted light is totally internally reflected within the waveguide and so that image bearing light output from the waveguide has a field of view corresponding to said range of angles, wherein the input grating is a surface relief grating having a profiled reflective surface and at least one layer of dielectric material conforming to the surface for diffracting light over said range of angles into the waveguide.

Two-filter light detection devices and methods related to same

Light detection devices and corresponding methods are provided. The devices include a reaction structure to contain a reaction solution and at least one reaction site that generates light emissions in response to incident excitation light after treatment with the reaction solution. The devices also include a plurality of light sensors and device circuitry. The devices further include a plurality of light guides extending toward at least one corresponding light sensor from input regions that receive the excitation light and the light emissions from at least one corresponding reaction recess. The light guides comprise a first filter region that filters the excitation light and permits the light emissions of a first wavelength to pass to the at least one corresponding light sensor, and a second filter region that filters the excitation light and the permits light emissions of a second wavelength to pass to the at least one corresponding light sensor.

Two-filter light detection devices and methods related to same

Light detection devices and corresponding methods are provided. The devices include a reaction structure to contain a reaction solution and at least one reaction site that generates light emissions in response to incident excitation light after treatment with the reaction solution. The devices also include a plurality of light sensors and device circuitry. The devices further include a plurality of light guides extending toward at least one corresponding light sensor from input regions that receive the excitation light and the light emissions from at least one corresponding reaction recess. The light guides comprise a first filter region that filters the excitation light and permits the light emissions of a first wavelength to pass to the at least one corresponding light sensor, and a second filter region that filters the excitation light and the permits light emissions of a second wavelength to pass to the at least one corresponding light sensor.

Microlens collimator for scanning optical fiber in virtual/augmented reality system

Disclosed is a method for rendering a virtual image with a virtual image generation system, comprising: emitting light from a distal end of an optical fiber in the virtual image generation system, wherein the optical fiber comprises a longitudinal direction in a nominal position and is driven to vibrate in one or more scan patterns about a fulcrum along the longitudinal direction; collimating the light emitted from the distal end of the optical fiber into collimated light in a direction proximate to the longitudinal direction using at least a collimation element having a single lens; receiving the collimated light at a waveguide apparatus of the virtual image generation system; and generating a stereoscopic virtual image at least by diffracting the collimated light at a plurality of focal depths with at least an optical diffractive element in the waveguide apparatus.

LASER PROJECTOR AND DIFFRACTIVE DISPLAY DEVICE

The invention relates to a laser projector for presenting an image on a waveguide plane. The projector comprises a laser source (10, 10A, 10B, 10C) capable of emitting a polychromatic light beam (11 ) or a plurality of narrow-wavelength light beams (11A, 11 B, 11 C), and a guidance element (12A, 12B) for directing light emitted by the light source to different pupils (16A, 16B, 16C) of the waveguide plane, the different pupils being displaced with respect to each other in the waveguide plane. The invention also concerns a personal display device comprising such projector.

ELECTRONIC DEVICE STACK ASSEMBLY

An electronic device includes a stack assembly and a cover glass. The stack assembly includes an electrophoretic display sub-assembly for rendering content, a front light sub-assembly comprising a light guide, a light FPC, and a plurality of light sources, and a capacitive touch sensing sub-assembly for detecting touch inputs. A yellow-pigmented tape is applied over the light sources and an edge of the light guide. A stiffener member is coupled to the light FPC opposite the yellow-pigmented tape.

COLD-CATHODE FLUORESCENT LAMP ASSEMBLY FOR LIGHTING APPLICATIONS

A compact and cost-efficient lamp assembly includes cold-cathode fluorescent lamps in a variety of edge-lit display sign applications specifically, in edge-lit emergency lighting signs. The lamp assembly includes in one self-contained module a lower housing unit and an upper housing unit shaped to cover the lower housing unit. The lower housing unit is divided into a lower frame and an upper frame disposed on top of the lower frame. The upper frame has at least two inverters disposed within. The lower frame is a parabolic shape reflector frame supporting at least two cathode lamps in line with the two inverters, each of which is connected to each lamp for providing high voltage to power up the lamps. Additionally, an edge-lit panel having a front and back side is disclosed in the present invention. The backside includes a semi-transparent frosted surface with a white opaque lamination glued on the frosted surface. A legend is printed on the front side using a first white layer and a colored ...

Image display device

DEVICE FOR COMPATIBLE ILLUMINATION OF NIGHT VISION EQUIPMENT (S)

Lamp device with color-changeable filter

A lamp device includes a supporting frame, a light emitting diode (LED) array source, a light filter, two end caps and two couples of electrodes. The LED array source is disposed on the supporting frame. The light filter is arc-shaped and combined with the supporting frame as a tubular structure, wherein the arc surface of the light filter is a light emitting surface of the LED array source. The light filter is used for absorbing a ray in a specific wavelength range of the emitting light of the LED array source. The two end caps are disposed at two ends of the tubular structure respectively. The two couples of electrodes are disposed at two ends of the tubular structure and mounted on the two end caps respectively for electrically connecting to the LED array source.

Display Device

Disclosed is a display device. The display device includes a light source, a light guide part to receive a light emitted from the light source, a light conversion member between the light source and the light guide part, and a spacer between the light source and the light conversion member.

Optical arrangement

The invention relates to an optical arrangement having a light source, which emits a beam, and having a light guide, which has a light-guiding layer, in which the coupled-in beam is guided between two substantially mutually opposite surface-type reflection layers. The optical arrangement is characterized in that the optical light paths of the individual rays of the beam, in particular at least of the marginal rays, from the light source to impingement on one of the reflection layers are substantially of equal length.

Backlight module

An exemplary illuminating apparatus includes a light guiding plate, a light source facing a light input surface of the light guiding plate, and a complementary color element adjacent to the light source. The light source comprises a number of LEDs which emit light with at least two wavelengths. The at least two wavelengths light mix with each other to gain a white light. The complementary color element is configured for receiving light emitted from adjacent, outmost LED and converting the light into white light. The white light is reflected by the complementary color element and emits from the light guiding plate through the light output surface. The complementary color element includes a plurality of first and second complementary color zones arranged alternatively and in a line.

Light emitting device, display unit, and illumination unit

A light emitting device includes: a light source; an optical component including a light incident surface, the light incident surface facing the light source; and a wavelength conversion member provided between the light source and the light incident surface, the wavelength conversion member crossing a first region and extending to a second region outside the first region, the first region being surrounded by the light incident surface and light paths of light that is emitted from the light source and enters edges of the light incident surface.

LIGHT EMITTING UNIT, DISPLAY, AND LIGHTING APPARATUS

There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component. 1. A light emitting unit , comprising:a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source;an optical component having a light incident surface in opposition to the plurality of light emitting sections; anda color unevenness prevention structure suppressing direct entering of light from the light source into the optical component.2. The light emitting unit according to claim 1 , wherein the color unevenness prevention structure is composed of a light-shielding section between the wavelength conversion members adjacent to each other.3. The light emitting unit according to claim 2 , wherein the light-shielding section is a reflection section that returns light heading directly from the light source toward the optical component back to the wavelength conversion member side.4. The light emitting unit according to claim 3 , further comprising a holder holding the plurality of wavelength conversion members and including a barrier section between the wavelength conversion members adjacent to each other claim 3 , whereinthe reflection section is composed of the barrier section of the holder.5. The light emitting unit according to claim 1 , wherein the color unevenness prevention ...

LIQUID CRYSTAL DISPLAY MODULE AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME

A liquid crystal display module is provided including a liquid crystal panel for displaying an image; a backlight unit including a light source unit for providing light to the liquid crystal panel; and a packaging chassis which holds the liquid crystal panel and the backlight unit in a single module. The light source unit includes a plurality of light sources; a light source support board for supporting the light sources; a wavelength conversion member, disposed in front of the light sources, which converts wavelengths of light emitted from the light sources; and a fixing member which holds the wavelength conversion member in front of the light sources. 1. A liquid crystal display module comprising:a liquid crystal panel which displays an image;a backlight unit comprising at least one light source unit which provides light to the liquid crystal panel; anda packaging chassis holding the liquid crystal panel and the backlight unit, a plurality of light sources;', 'a light source support board on which the light sources are supported;', 'a wavelength conversion member disposed in front of the light sources, wherein the wavelength conversion member converts wavelengths of the light emitted from the plurality of light sources; and', 'a fixing member which holds the wavelength conversion member in front of the light sources., 'wherein the light source unit comprises2. The liquid crystal display module of claim 1 , wherein the fixing member defines a mounting space within which the wavelength conversion member is disposed and defines an accommodation space within which the plurality of light sources are accommodated.3. The liquid crystal display module of claim 2 , wherein:the light source support board has a rectangular shape,the plurality of light sources are arranged along a longitudinal direction of the light source support board, andthe wavelength conversion member extends in the longitudinal direction of the light source support board.4. The liquid crystal display ...

SIMULATED SUNLIGHT IRRADIATION APPARATUS

A simulated sunlight irradiation apparatus () has transmittance adjustment members (and ) provided above an irradiation surface of a light guide plate () and in the vicinity of either incident face of the light guide plate () on which simulated sunlight is incident. The transmittance adjustment members (and ) adjust the transmittance of light in a portion of a wavelength band of simulated sunlight that is emitted from the irradiation surface of the light guide plate (), thus bringing about improvement in spectral coincidence of the simulated sunlight. This provides a simulated sunlight irradiation apparatus that can radiate simulated sunlight with high spectral coincidence. 1. A simulated sunlight irradiation apparatus comprising:a first light source which radiates a first ray of light;a second light source which radiates a second ray of light having a spectral distribution that is different from a spectral distribution of the first ray of light;a first optical filter which controls a transmittance of the first ray of light;a second optical filter which controls a transmittance of the second ray of light;a photoselection section which receives the first ray of light whose transmittance has been controlled by the first optical filter and the second ray of light whose transmittance has been controlled by the second optical filter, and which emits simulated sunlight by mixing together a ray of light selected from the first ray of light thus received and a ray of light selected from the second ray of light thus received;a light guide plate which receives the simulated sunlight emitted from the photoselection section;a light extraction section which takes out, to an irradiation surface of the light guide plate, the simulated sunlight received by the light guide plate; anda transmittance adjustment member which is located closer to the irradiation surface of the light guide plate than the light extraction section is, and which adjusts a transmittance of light in a portion ...

Method of manufacturing directional backlight apparatus and directional structured optical film

Disclosed is a manufacturing method for a stepped imaging directional backlight apparatus which may include a structured optical film and a tapered body. The structured optical film may include multiple optical functions and may be assembled by folding onto the tapered body, reducing cost and complexity of manufacture.

SLIM WAVEGUIDE COUPLING APPARATUS AND METHOD

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure. 112.-. (canceled)13. An illumination structure comprising:a waveguide having (i) top and bottom opposed surfaces, (ii) an in-coupling region for receiving light, (iii) an out-coupling region for emitting light from the waveguide, and (iv) a depression in the top surface thereof;a plurality of discrete light sources disposed proximate the waveguide and positioned to emit light into the in-coupling region, wherein the depression reflects a first portion of light emitted by the discrete light sources into the waveguide and transmits a second portion of light emitted by the discrete light sources through the depression;disposed over the depression, an absorber for preventing transmission of at least a portion of the second portion of light therethrough; anddisposed between the absorber and the discrete light sources, a phosphor layer for converting a wavelength of light emitted by at least one of the discrete light sources to a different wavelength.14. The illumination structure of claim 13 , wherein the plurality of discrete light sources comprises at least three discrete light sources.15. The illumination structure of claim 13 , wherein the plurality of discrete light sources comprises at least four discrete light sources.16. The illumination structure of claim 13 , wherein at least two of the discrete light sources emit light of substantially the same wavelength.17. The illumination structure of claim 13 , wherein at least two of the discrete light sources emit light of different wavelengths.18. The illumination structure of claim 13 , wherein a thickness of the waveguide ...

Backlight module Comprising Quantum Dot Strips and Liquid Crystal Display Device

A backlight module having quantum dot (QD) strips is provided. The backlight module includes a back bezel, a light guide plate (LGP) disposed on the back bezel, and a light source fixed at one side of the LGP. A QD strip is disposed between the light source and the LGP. A reflective layer is coated on or adheres to partial periphery of the QD strip, an incident opening and an emergent opening are formed on the periphery of the QD strip because of the reflective layer. The incident opening faces towards the light source. The emergent opening faces towards the LGP, and a width of the emergent opening is smaller than a width of the incident opening. The present invention also proposes a liquid crystal display using the backlight module.

INTEGRATED QUANTUM DOT OPTICAL CONSTRUCTIONS

An optical construction includes a quantum dot film element including a plurality of quantum dots, a first optical recycling element, and a first low refractive index element separating the quantum dot film element from the first optical recycling element. The first low refractive index element has a refractive index of 1.3 or less. 1. An optical construction comprising:a quantum dot film element comprising a plurality of quantum dots;a first optical recycling element; anda first low refractive index element separating the quantum dot film element from the first optical recycling element, the first low refractive index element having a refractive index of 1.3 or less.2. The optical construction of claim 1 , further comprising an LCD panel disposed on the first optical recycling element.3. The optical construction of claim 1 , further comprising an optical diffuser element disposed on the quantum dot film element.4. The optical construction of claim 1 , further comprising a second optical recycling element disposed on the quantum dot film element.5. The optical construction of claim 1 , further comprising a second low refractive index element separating the quantum dot film element from an optical element claim 1 , the second low refractive index element having a refractive index of 1.25 or less.6. The optical construction of claim 5 , wherein the optical element is a second optical recycling element.7. The optical construction of claim 5 , wherein the optical element is a light guide element.8. The optical construction of wherein the first optical recycling element comprises a reflective polarizer.9. The optical construction of wherein the first optical recycling element comprises a microstructured brightness enhancing film.10. The optical construction of wherein the second optical recycling element comprises a reflective polarizer.11. The optical construction of wherein the first low refractive index element has a refractive index of 1.2 or less.12. The optical ...

SLIM WAVEGUIDE COUPLING APPARATUS AND METHOD

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure. 112.-. (canceled)13. An illumination structure comprising:a waveguide having (i) top and bottom opposed surfaces, (ii) an in-coupling region for receiving light, (iii) an out-coupling region for emitting light from the waveguide, and (iv) a depression in the top surface thereof;a discrete light source disposed proximate the waveguide and positioned to emit light into the in-coupling region;disposed over and/or at least partially within the depression, a mirror for reflecting light from the discrete light source into the out-coupling region; anda phosphor layer for converting a wavelength of light emitted by the discrete light source to a different wavelength.14. The illumination structure of claim 13 , further comprising an air gap disposed between the mirror and the depression.15. The illumination structure of claim 14 , wherein a thickness of the air gap is selected from the range of approximately 10 μm to approximately 200 μm.16. The illumination structure of claim 14 , wherein a thickness of the air gap is less than approximately 10 μm.17. The illumination structure of claim 14 , wherein at least a portion of the air gap is filled with a filler material.18. The illumination structure of claim 17 , wherein the filler material is adhesive.19. The illumination structure of claim 17 , wherein an index of refraction of the filler material is less than an index of refraction of the waveguide.20. The illumination structure of claim 17 , wherein the filler material comprises silicone.21. The illumination structure of claim 13 , wherein the mirror comprises a substantially ...

ILLUMINATION SOURCE AND DISPLAY APPARATUS HAVING THE SAME

Disclosed is a color conversion layer including at least one light emitting material including at least one composite particle surrounded partially or totally by at least one surrounding medium; wherein the light emitting material is configured to emit light in response to an excitation and the at least one composite particle includes a plurality of nanoparticles encapsulated in an inorganic material; and wherein the inorganic material has a difference of refractive index compared to the at least one surrounding medium superior or equal to 0.02 at 450 nm. Also disclosed is an illumination source and a display apparatus. 147171. A color conversion layer () comprising at least one light emitting material () comprising at least one composite particle () surrounded partially or totally by at least one surrounding medium ();{'b': 7', '1', '3', '2', '2', '71, 'wherein said light emitting material () is configured to emit a secondary light in response to an excitation and the at least one composite particle () comprises a plurality of nanoparticles () encapsulated in an inorganic material (); and said inorganic material () has a difference of refractive index compared to the at least one surrounding medium () superior or equal to 0.02 at 450 nm.'}2422. The color conversion layer () according to claim 1 , wherein the inorganic material () limits or prevents the diffusion of outer molecular species or fluids (liquid or gas) into said inorganic material ().34171. The color conversion layer () according to claim 1 , wherein the at least one composite particle () in the at least one surrounding medium () is configured to scatter light.4431. The color conversion layer () according to claim 1 , wherein the nanoparticles () comprised in the at least one composite particle () are semiconductor nanocrystals comprising a material of formula MNEA claim 1 , wherein: M is selected from the group consisting of Zn claim 1 , Cd claim 1 , Hg claim 1 , Cu claim 1 , Ag claim 1 , Au claim 1 , ...

TRAFFIC LIGHT

A traffic light including a plurality of light emitting elements and at least one light guide plate is provided. Each of the light emitting elements is configured to emit a light. The light emitting elements are disposed beside a light entering surface of the at least one light guide plate. Each of the lights enters the at least one light guide plate through the light entering surface of the at least one light guide plate. 1. A traffic light , comprising:a plurality of light emitting elements, each of the light emitting elements being configured to emit a light; andat least one light guide plate, the light emitting elements being disposed beside a light entering surface of the at least one light guide plate, and each of the lights enters the at least one light guide plate through the light entering surface of the at least one light guide plate.2. The traffic light as claimed in claim 1 , wherein the number of the at least one light guide plate is plural claim 1 , the light guide plates comprise a first light guide plate and a plurality of second light guide plates claim 1 , the second light guide plates are disposed in the first light guide plate claim 1 ,the light entering surface of the first light guide plate is a first light entering surface, the light entering surfaces of the second light guide plates are a plurality of second light entering surfaces,the light emitting elements comprise a plurality of first light emitting elements and a plurality of second light emitting elements, the light emitted by each of the first light emitting elements is a first light, and the light emitted by each of the second light emitting elements is a second light,the first light emitting elements are disposed beside the first light entering surface of the first light guide plate, and the first lights are emitted out through the first light guide plate,at least one of the second light emitting elements is disposed beside the second light entering surface of each of the second ...

DISTRIBUTED LIGHT MANIPULATION OVER IMAGING WAVEGUIDE

In a stacked waveguide assembly, the waveguides can comprise color filters, distributed filters, and/or switch materials. Examples of color filters include dyes, tints, or stains. Examples of distributed filters and/or switch materials include dichroic filters, Bragg gratings, electronically switchable glass, and electronically switchable mirrors. Switch materials can be designed or tuned to attenuate light of unwanted colors or wavelengths. The waveguides may each be associated with a particular design wavelength. This can mean that a waveguide that is associated with a design wavelength includes an incoupling optical element is configured to deflect light at the design wavelength to an associated light distributing element and that the associated wavelength selective region is configured to attenuate light not at the design wavelength. 1. A waveguide comprising:an incoupling optical element configured to couple light into the waveguide, the light comprising a first wavelength and a second wavelength not equal to the first wavelength;a light distributing element configured to receive light from the incoupling optical element and to propagate light via total internal reflection, the light distributing element comprising a wavelength selective region configured to attenuate incoupled light at the second wavelength relative to incoupled light at the first wavelength; andan outcoupling optical element configured to receive light from the light distributing element and to couple light at the first wavelength out of the waveguide.2. The waveguide of claim 1 , wherein the incoupling optical element comprises a grating.3. The waveguide of claim 1 , wherein the wavelength selective region comprises a dye claim 1 , a tint claim 1 , a stain claim 1 , a dichroic filter claim 1 , or a Bragg grating.4. The waveguide of claim 1 , wherein the incoupling optical element does not comprise a wavelength selective filter.5. The waveguide of claim 1 , wherein the outcoupling optical ...

BACKLIGHT DEVICE

A backlight device includes a light guide plate including a first incident surface, and one or more second incident surfaces that are connected to the first incident surface and inclined with respect to the first incident surface in a top plan view; at least one green illuminant arranged to face one of (i) the first incident surface and (ii) the one or more second incident surfaces; and at least one red illuminant arranged to face the other of (i) the first incident surface and (ii) the one or more second incident surfaces. At least one of (i) the green light emitted from the green illuminant, and (ii) the red light emitted from the red illuminant, contains a blue component whose emission peak wavelength is 420 nm to 500 nm. 1. A backlight device comprising:a light guide plate including a first incident surface, and one or more second incident surfaces that are connected to the first incident surface and inclined with respect to the first incident surface in a top plan view;at least one green illuminant arranged to face one of (i) the first incident surface and (ii) the one or more second incident surfaces, the at least one green illuminant being configured to emit a green light toward said one of (i) the first incident surface and (ii) the one or more second incident surfaces; andat least one red illuminant arranged to face the other of (i) the first incident surface and (ii) the one or more second incident surfaces, the at last one red illuminant being configured to emit a red light toward said other of (i) the first incident surface and (ii) the one or more second incident surfaces,wherein at least one of (i) the green light emitted from the green illuminant, and (ii) the red light emitted from the red illuminant, contains a blue component whose emission peak wavelength is 420 nm to 500 nm.2. The backlight device according to claim 1 , wherein:the light guide includes the two of the second incident surfaces, andsaid the first incident surface is arranged between ...

WHITE LED LIGHT SOURCE, BACKLIGHT MODULE AND DISPLAY DEVICE

The present disclosure relates to a white LED light source, a backlight module and a liquid crystal display device. The white LED light source comprises a light strip having a plurality of LED units and a plurality of laser units. Each LED unit has a chip emitting lights of a first color light and a fluorescent module induced by the lights of the first color to emit lights of a second color. The plurality of laser units emit lights of a third color so as to form white lights by mixing the lights of the second color emitted by the LED units and the lights of the third color emitted by the laser units. In the white LED light source according to the present disclosure, laser units are used so as to expand the color gamut of the liquid crystal display device. 1. A white LED light source comprising a light strip having a plurality of LED units and a plurality of laser units ,wherein each LED unit has a chip emitting lights of a first color light and a fluorescent module induced by the lights of the first color to emit lights of a second color;the plurality of laser units emit lights of a third color so as to form white lights by mixing the lights of the second color emitted by the LED units and the lights of the third color emitted by the laser units.2. The white LED light source according to claim 1 , wherein the laser unit is a red laser LED; the chip is a blue light chip emitting blue lights; and the fluorescent module has a green color fluorescent powder.3. The white LED light source according to claim 2 , wherein the red laser LED has a working wavelength of about 650 nm.4. The white LED light source according to claim 1 , wherein the red color laser units are embedded in the light strip.5. The white LED light source according to claim 1 , wherein in the light strip claim 1 , at least one LED unit is provided between any two adjacent the laser units.6. The white LED light source according to claim 1 , further comprising a beam expander provided on a light emitting ...

Optical film, polarizing plate, and image display device

Provided are an optical film including a base material, and a hard coat layer, in which a refractive index of the base material at a wavelength of 550 nm is 1.60 or more, a difference between a refractive index of the base material at a wavelength of 435 nm and a refractive index of the base material at a wavelength of 610 nm is 0.11 or more, and a peak intensity PV value of a power spectrum obtained by subjecting a reflectivity spectrum of the optical film to fast Fourier transform is 0.3 or less, a polarizing plate having the optical film and an image display device.

METHOD AND APPARATUS TO ENHANCE SPECTRAL PURITY OF A LIGHT SOURCE

A reflective filter serving as a multi-bandpass filter for a light source configured to emit light in a plurality of color primary wavelengths to improve color purity. The addition of a reflective/recirculation assembly reinforces and recirculates light not passed by the multi-bandpass filter back into a desired spectrum, which is subsequently passed by the multi-bandpass filter, or converts light not passed by the multi-bandpass into electrical energy for use by the system. The reflective filter, solely or along with the recirculation assembly, can be placed adjacent a conventional light source. Alternatively the multi-bandpass filter and the recirculation assembly can be placed in a modified light source, or placed in an optical stack along the path of light emission. Collimating structures that enforce the light into desired incident angle of attack onto the reflective filter can be included to enhance the efficiency of the reflective elements in the assembly. 165-. (canceled)66: An assembly for adjusting the spectral emissions of transmitted light of a liquid crystal display , comprising:a light source having an emission output surface operable to output light into a backlight assembly;a light guide adapted to receive incident light from the light source at a first surface, and to emit light at a second surface;a color filter surface containing a plurality of pixel color-filtering elements disposed between a plurality of light-transmitting pixel elements of the liquid crystal layer and an illumination surface of a display;a collimating layer interposed between the light source and a first reflective filter and adapted to collimate output light prior to incidence on the first reflective filter; anda first reflective filter interposed between the collimating surface and the illumination surface of the display, wherein the first reflective filter is operable to pass at least one wave-band of wavelengths of light source transmitted light, and to reflect wavelengths ...

Method and Apparatus for Contact Image Sensing

A contact image sensor having an illumination source; a first SBG array device; a transmission grating; a second SBG array device; a waveguiding layer including a multiplicity of waveguide cores separated by cladding material; an upper clad layer; and a platen. The sensor further includes: an input element for coupling light from the illumination source into the first SBG array; a coupling element for coupling light out of the cores into output optical paths coupled to a detector having at least one photosensitive element. 1. A waveguide device comprising:an optical substrate with first and second light reflecting surfaces; anda light absorbing coating applied to at least one of said surfaces with portions of the coating removed to provide at least one non-absorbing region disposed between light absorbing regions,each said non-absorbing region of said first surface overlapping a non-absorbing region of said second surface to form a waveguiding volume within said substrate.2. The apparatus of claim 1 , wherein said non-absorbing regions are portions of said substrate surface at which total internal refection can take place.3. The apparatus of claim 1 , wherein said non-absorbing regions are portions of said light reflecting surface textured to scatter light or coated to provide partial reflection of light.4. The apparatus of claim 1 , wherein said waveguide volume provides a rectangular waveguiding core.5. The apparatus of claim 1 , further comprising a source of light optically coupled to said waveguide.6. The apparatus of claim 5 , wherein said light is collimated before being coupled into said waveguide.7. The apparatus of claim 5 , wherein said light is infrared or ultraviolet.8. The apparatus of claim 5 , wherein said light is polarized before being coupled into said waveguide.9. The apparatus of claim 5 , further comprising at least one of a polarization selection layer claim 5 , a polarization rotation layer claim 5 , a platen for contact image formation claim ...

Light Source, Backlight Module And Display Apparatus

The present disclosure provides a light source, a backlight module and a display apparatus. The light source includes: a light emitting diode chip; and a fluorescent powder layer arranged to face towards the light emitting diode chip and configured to receive a first light emitted from the light emitting diode chip and to emit a second light with a wavelength different from that of the first light, wherein the light emitting diode chip and the fluorescent powder layer are moveable with respect to each other such that quantity of fluorescent powder in the fluorescent powder layer excited by the light emitted from the light emitting diode chip increases or decreases. In the above solution, the light emitting diode chip and the fluorescent power layer are movable with respect to each other, so as to adjust color temperature of backlight conveniently. 1. A light source , comprising:a light emitting diode chip; anda fluorescent powder layer arranged to face towards the light emitting diode chip and configured to receive first light emitted from the light emitting diode chip and to emit second light with a wavelength different from that of the first light,wherein the light emitting diode chip and the fluorescent powder layer are moveable with respect to each other such that quantity of fluorescent powder in the fluorescent powder layer excited by the light emitted from the light emitting diode chip increases or decreases.2. The light source according to claim 1 , wherein the light emitting diode chip and the fluorescent powder layer are moveable towards each other or away from each other.3. The light source according to claim 1 , wherein the fluorescent powder layer has a recess on its side facing towards the light emitting diode chip claim 1 , the light emitting diode chip being accommodated within the recess claim 1 , and the light emitting diode chip and the fluorescent powder layer are moveable with respect to each other such that the light emitting diode chip moves ...

BACKLIGHT UNIT

A backlight unit includes at least one light source configured to emit light and a light guide plate including a light incident surface and a light emitting emitting surface. The light from the light source is incident on the light incident surface and the incident light is emitted through the light emitting surface. A wavelength conversion unit is disposed between the light source and the light incident surface of the light guide plate. A lower cover is configured to cover at least part of a lower portion of a light incident surface of the wavelength conversion unit. An upper cover is configured to cover at least part of an upper portion of the light incident surface of the wavelength conversion unit.

LIGHT GUIDE PLATE AND IMAGE DISPLAY DEVICE

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

DUAL DEPTH EXIT PUPIL EXPANDER

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

Illumination Device and Display Device

Provided is an illumination device that makes it possible to enhance utilization efficiency of light, and a display device that includes the illumination device. The illumination device includes: a light source that is configured to generate light of a first wavelength; a luminescent body that is configured to wavelength-convert the light of the first wavelength to light of a second wavelength, the second wavelength being different from the first wavelength; and a wavelength selective filter that is provided on a light-incident side of the luminescent body, the wavelength selective filter being configured to transmit the light of the first wavelength and to reflect the light of the second wavelength.

OPTOELECTRONIC SEMICONDUCTOR COMPONENT AND MODULE WITH A PLURALITY OF SUCH COMPONENTS

The invention relates to a semi-conductor component, comprising a semi-conductor chip () which has an active layer () suitable for generating radiation and suitable for emitting radiation in the blue wavelength range. A first converter () comprising a Ce doping is arranged downstream of the semiconductor chip () in the emission direction. In addition, a second converter () comprising a minimum Ce doping of 1.5% is arranged downstream of the semiconductor chip () in the emission direction. The invention further relates to a module with a plurality of such components. 1. An optoelectronic semiconductor component comprising a semiconductor chip , whereinthe semiconductor chip has an active layer suitable for generating radiation and suitable for emitting radiation in the blue wavelength range,a first converter comprising a Ce doping is disposed downstream of the semiconductor chip in the emission direction,a second converter comprising a Ce doping of at most 1.5% is disposed downstream of the semiconductor chip in the emission direction, andthe first converter has a higher Ce doping than the second converter.2. The semiconductor component according to claim 1 , wherein the first converter has a dominant wavelength of the electromagnetic radiation emitted by the first converter during operation in a range of between 565 nm and 575 nm inclusive claim 1 , andwherein the second converter has a dominant wavelength of the electromagnetic radiation emitted by the second converter during operation in a range of between 550 nm and 560 nm inclusive.3. The semiconductor component according to claim 1 , wherein the first converter comprises a Ce doping of at least 2.5%.4. The semiconductor component according to claim 1 , wherein the first converter converts at least part of the radiation emitted by the semiconductor chip into radiation in the yellow and/or yellow-orange wavelength range.5. The semiconductor component according to claim 1 , wherein the second converter converts at ...

DISPLAY DEVICE

According to one embodiment, an illumination device including a light source unit including a light-emitting element having a light-emitting surface, a reflective surface formed around the light-emitting surface and having higher optical reflectivity than the light-emitting surface, a wavelength conversion member which converts a wavelength of emitted light from the light-emitting surface, an optical member located between the light source unit and the wavelength conversion member and including a light path adjustment mechanism which guides, to the reflective surface, light returned from the wavelength conversion member to the light-emitting surface, and a lightguide opposed to the wavelength conversion member. 1. An illumination device comprising:a light source unit comprising a light-emitting element comprising a light-emitting surface;a reflective surface formed around the light-emitting surface and having higher optical reflectivity than the light-emitting surface;a wavelength conversion member which converts a wavelength of emitted light from the light-emitting surface;an optical member located between the light source unit and the wavelength conversion member and comprising a light path adjustment mechanism which guides, to the reflective surface, light returned from the wavelength conversion member to the light-emitting surface; anda lightguide opposed to the wavelength conversion member.2. The illumination device of claim 1 , whereinthe wavelength conversion member comprises a light-emitting material which absorbs the emitted light and emits light of a longer wavelength than the emitted light.3. The illumination device of claim 2 , whereinthe light-emitting material is formed of a quantum dot.4. The illumination device of claim 1 , whereinthe light path adjustment mechanism is formed on a side of the optical member opposed to the light source unit.5. The illumination device of claim 1 , whereinthe light path adjustment mechanism is a concave lens opposed Lo ...

EDGE TYPE BACKLIGHT MODULE AND DISPLAY DEVICE

Disclosed are an edge type backlight module and a display device. The edge type backlight module includes a light guide plate, a plurality of light sources, and dim area compensating units disposed between two adjacent light sources. Light rays of each light source enter the light guide plate from a lateral side, and by the effect of the light guide plate, light rays go out of the light guide plate from the front face. The dim area compensating units are used for providing light compensation for the dim areas between two light sources. By setting the dim area compensating unit between two light sources, the utility model of the present disclosure discloses an edge type backlight module which solves the dim area effect effectively, thus avoiding defects of the prior art for solving the dim area effect. 1. An edge type backlight module , comprising a light guide plate , a plurality of light sources , and dim area compensating units disposed between two adjacent light sources; wherein ,the light guide plate is used for uniformly emitting light rays, entering of the light guide plate from a lateral side, of each light source, from the front face;and the dim area compensating units are used for providing light compensation for the dim areas between two adjacent light sources.2. The edge type backlight module according to claim 1 , further comprising light bars claim 1 , wherein a plurality of light sources are disposed on the light bars.3. The edge type backlight module according to claim 2 , wherein the light bars are disposed in a first direction of a lateral side of the light guide plate.4. The edge type backlight module according to claim 1 , wherein the dim area compensating unit comprises a dim area compensating light source claim 1 , and the dim area compensating light source is disposed in a second direction of the lateral side of the light guide plate.5. The edge type backlight module according to claim 4 , wherein the dim area compensating unit further ...

Wavelength-splitting optical cable

An optical cable includes a single optical connector configured for insertion into an optical receptacle so as to receive optical signals at a plurality of different wavelengths from the optical receptacle, and multiple electrical connectors, configured for insertion into respective electrical receptacles. Each electrical connector includes a transceiver configured to convert the optical signals into electrical output signals for output to an electrical receptacle. The optical cable further includes a plurality of optical fibers, having respective first ends connected together to the single optical connector so as to receive the optical signals. Each of the optical fibers has a respective second end coupled to a respective one of the electrical connectors. Wavelength selection optics are associated with the optical fibers so that the transceiver in each of the electrical connectors receives the optical signals at a different, respective one of the wavelengths. 118-. (canceled)19. An optical cable , comprising:a single optical connector to receive optical signals at a plurality of different wavelengths;multiple electrical connectors, each electrical connector comprising a transceiver to convert the optical signals into electrical output signals;a plurality of optical fibers, having respective first ends connected to receive the optical signals from the single optical connector, and each of the optical fibers having a respective second end coupled to a respective one of the electrical connectors; andwavelength selection optics to convey the optical signals in a different, respective passband, which contains a respective one of the different wavelengths, to the transceiver in each of the electrical connectors.20. The optical cable according to claim 19 , wherein the wavelength selection optics comprise a wavelength splitter in the single optical connector claim 19 , such that each of the optical fibers receives and conveys the optical signals only at the respective one ...

Color shifting illuminator

A color shifting illuminator includes a first luminescent material that absorbs first incident photons having an energy greater than or equal to a first threshold energy, and emits first photons with less energy than the first incident photons. The color shifting illuminator also includes a second luminescent material that absorbs second incident photons having an energy greater than or equal to a second threshold energy, and emits second photons with less energy than the second incident photons and less energy than the first photons. The first luminescent material and the second luminescent material are included in a waveguide, and the waveguide exhibits total internal reflection for the first photons and the second photons satisfying conditions for total internal reflection. An extraction region is coupled to the waveguide to emit the first photons and the second photons.

ANTI-SPOOFING SENSING FOR REJECTING FAKE FINGERPRINT PATTERNS IN UNDER-SCREEN OPTICAL SENSOR MODULE FOR ON-SCREEN FINGERPRINT SENSING

Devices and optical sensor modules are provided for provide on-screen optical sensing of fingerprints by using a under-LCD or OLED screen optical sensor module that captures and detects returned light and anti-spoofing sensing for rejecting fake fingerprint models based on capacitive sensing or optical sensing. 1. An electronic device capable of detecting a fingerprint by optical sensing , comprising:a screen that provides touch sensing operations and includes a display panel structure to display images;a top transparent layer formed over the device screen as an interface for being touched by a user for the touch sensing operations and for transmitting the light from the display structure to display images to a user;an optical sensor module located below the display panel structure to receive probe light that passes through the screen to detect a fingerprint; anda capacitive sensor array coupled to the screen to measure capacitance signals as a capacitive anti-spoofing sensor for rejecting a fake fingerprint pattern.2. The device as in claim 1 , whereinthe optical sensor module includes an optical collimator array of optical collimators that receives the probe light and an optical sensor array of optical sensors to receive the probe light from the optical collimator array.3. The device as in claim 1 , whereinthe optical sensor module includes one or more optical filtering layers to transmit probe light for optical sensing of fingerprints while blocking background day light at optical wavelengths longer than the probe light.4. The device as in claim 3 , whereinthe optical sensor module includes a first layer between the screen and the optical collimator array and a second layer between the optical collimator array and the optical sensor array so that both first and second layers are sufficiently thick to reduce undesired Moiré patterns.5. The device as in claim 1 , wherein the screen is a LCD screen.6. The device as in claim 1 , wherein the screen is an OLED screen.7 ...

LAMP USING SEMICONDUCTOR LIGHT-EMITTING DEVICES

Discussed is a lamp or a lighting device including a substrate; a plurality of semiconductor light-emitting devices; a light guide layer provided with an incident light surface on which light emitted from the plurality of semiconductor light-emitting devices is incident and a light exit surface from which the light is emitted; a first reflective layer disposed on one surface of the light guide layer facing towards the light exit surface to reflect the light; and a second reflective layer disposed on another surface different from the one surface of the light guide layer on which the first reflective layer is disposed, wherein the first reflective layer is disposed on the same surface as the incident light surface, and wherein the second reflective layer is disposed obliquely to the incident light surface to allow light incident on the incident light surface to travel along the light guide layer 1. A lamp , comprising:a substrate;a plurality of semiconductor light-emitting devices arranged on the substrate;a light guide layer disposed on the substrate, and provided with an incident light surface on which light emitted from the plurality of semiconductor light-emitting devices is incident and a light exit surface from which the light is emitted;a first reflective layer disposed between the substrate and the light guide layer, and disposed on one surface of the light guide layer facing towards the light exit surface to reflect the light; anda second reflective layer disposed to overlap with the plurality of semiconductor light-emitting devices, and disposed on another surface different from the one surface of the light guide layer on which the first reflective layer is disposed,wherein the first reflective layer is disposed on the same surface as the incident light surface, andwherein the second reflective layer is disposed obliquely to the incident light surface to allow light incident on the incident light surface to travel along the light guide layer.2. The lamp of ...

DISPLAY ASSEMBLY AND DISPLAY APPARATUS USING THE SAME

The display assembly includes: a light source configured to emit light; a light guide plate disposed to receive light emitted from the light source on a lateral side; and a color transformer disposed proximate to an edge of the light guide plate, and configured to change a color of light incident to the color transformer. 1. A display assembly comprising:a light source configured to emit light;a light guide plate disposed to receive light emitted from the light source on a lateral side;a quantum dot sheet comprising a first surface and a second surface, the first surface being in contact with a surface of the light guide plate; anda color transformer configured to change a color of light incident to the color transformer,wherein a part of the color transformer is disposed on an edge of the second surface of the quantum dot sheet near the light source and separated from the light guide plate.2. The display assembly according to claim 1 , further comprising a light absorber disposed in contact with the color transformer claim 1 , and configured to absorb light emitted from the light source.3. The display assembly according to claim 2 , wherein the light absorber is disposed on a lateral side of the color transformer nearest to the light source.4. The display assembly according to claim 2 , wherein the light absorber is disposed on a surface of the color transformer opposite a surface of the color transformer onto which light from the light source is incident.5. (canceled)6. The display assembly according to claim 1 , wherein the color transformer is disposed on a surface of the quantum dot sheet that is opposite to the surface of the quantum dot sheet on which the light guide plate is disposed.7. The display assembly according to claim 1 , wherein the quantum dot sheet and the color transformer are disposed on a same surface of the light guide plate claim 1 , and the color transformer is disposed alongside the quantum dot sheet.8. The display assembly according to ...

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

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.

Diffractive optical elements with mitigation of rebounce-induced light loss and related systems and methods

Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide. The in-coupling optical element can be truncated or have reduced diffraction efficiency along the propagation direction to reduce the occurrence of light loss due to re-bounce of in-coupled light, resulting in less in-coupled light being prematurely out-coupled and/or absorbed during subsequent interactions with the in-coupling optical element.

LIQUID CRYSTAL LENS, CONTROL METHOD THEREOF, LIQUID CRYSTAL LENS MODULE AND DISPLAY DEVICE

A liquid crystal lens, a control method thereof, a liquid crystal lens module and a display device are provided. The liquid crystal lens includes a first transparent substrate and two liquid crystal cells arranged at two opposite sides of the first transparent substrate. Each liquid crystal cell includes a first transparent electrode layer and a second transparent electrode layer; and a liquid crystal layer therebetween. The second transparent electrode layer includes a first electrode sub-layer and a second electrode sub-layer. The first electrode sub-layer includes N concentric first annular electrodes, and the second electrode sub-layer includes N concentric second annular electrodes. The first annular electrodes and the second annular electrodes are alternately arranged in a direction parallel with the first transparent electrode layer. Initial alignment orientations of liquid crystal molecules in liquid crystal layers in the two liquid crystal cells are perpendicular to each other. 1. A liquid crystal lens , comprising a first transparent substrate and two liquid crystal cells arranged at two opposite sides of the first transparent substrate , wherein each of the two liquid crystal cells comprises:a first transparent electrode layer and a second transparent electrode layer that are stacked; anda liquid crystal layer between the first transparent electrode layer and the second transparent electrode layer;wherein the second transparent electrode layer comprises a first electrode sub-layer and a second electrode sub-layer that are stacked in sequence; andthe first transparent electrode layer is of a plate-like structure, the first electrode sub-layer comprises N concentric first annular electrodes, and the second electrode sub-layer comprises N concentric second annular electrodes, wherein N is a positive integer, and the first annular electrodes and the second annular electrodes are alternately arranged in a direction parallel with the first transparent electrode ...

Methods and Apparatus for Multiplying the Image Resolution and Field-of-View of a Pixelated Display

Systems and methods for multiplying the resolution and field-of-view of pixelated displays in accordance with various embodiments of the invention are illustrated. One embodiment includes an apparatus having an image projector for directing light from a pixelated image source into unique angular directions, an image processor electrically connected to the image projector for computing native images of the image source corresponding to first and second field-of-view portions and for computing shifted images in a predefined direction corresponding to the first and second field-of-view portions for sequential display by the image projector, a first set of gratings having a native configuration for propagating the light of the native image and at least one shifted configuration for propagating the light of at least one shifted image, and a second set of gratings having a first configuration for projecting the first field-of-view portion and a second configuration for projecting the second field-of-view portion. 1. An apparatus for multiplying display resolution and field-of-view , the apparatus comprising:an image projector for directing light from a plurality of pixels of a pixelated image source into unique angular directions wherein the image projector comprises a microdisplay panel optically connected to a projection lens;an image processor electrically connected to the image projector for computing native images of the image source corresponding to first and second field-of-view portions and for computing shifted images in a predefined direction corresponding to the first and second field-of-view portions for sequential display by the image projector;a first set of gratings comprising a first input grating optically coupled to the image projector and a first output grating, wherein the first set of gratings comprises at least one switchable grating switchable between a diffracting state and a non-diffracting state, wherein the first set of gratings have a native ...

OPTICAL DEVICE AND IMAGE DISPLAY APPARATUS

An optical device of the present disclosure includes a first light guide body including a first light-incident portion provided with a first incidence-side diffraction element, and a second light guide body including a second light-incident portion provided with a second incidence-side diffraction element, wherein the second light guide body, when light is caused to enter the first light-incident portion, is disposed at a position at which a part of the light passing through the first light guide body enters the second light-incident portion, and the second incidence-side diffraction element is an element that diffracts light of monochromatic color at a smaller angle than the first incidence-side diffraction element does, when the light of monochromatic color is caused to enter at a same angle. 1. An optical device comprising:a first light guide body including a first light-incident portion provided with a first incidence-side diffraction element; anda second light guide body including a second light-incident portion provided with a second incidence-side diffraction element, whereinthe second light guide body, when a light is caused to enter the first light-incident portion, is disposed at a position at which a part of the light passing through the first light guide body enters the second light-incident portion, andthe second incidence-side diffraction element is an element that diffracts light of monochromatic color at a smaller angle than the first incidence-side diffraction element does, when the light of monochromatic color is caused to enter at a same angle.2. The optical device according to claim 1 , whereinthe first incidence-side diffraction element and the second incidence-side diffraction element are each a diffraction grating of a surface-relief type, anda grating period of the second incidence-side diffraction element is greater than a grating period of the first incidence-side diffraction element.3. The optical device according to claim 1 , whereinthe ...

CHIP-SCALE LINEAR LIGHT-EMITTING DEVICE

A chip-scale linear light-emitting device includes a submount substrate, light-emitting diode (LED) semiconductor chips, a chip-scale packaging structure and a reflective structure. The LED semiconductor chips, the packaging structure and the reflective structure are disposed on the submount substrate, wherein the packaging structure partially covers the chip-upper surface and/or the chip-edge surfaces of the LED semiconductor chips, and the reflective structure partially covers the package-top surface and/or the package-side surfaces of the packaging structure. If one of the chip-edge surfaces and the package-side surface of the packaging structure are exposed from the reflective structure as a primary light-emitting side surface, a side-view type linear light-emitting device is formed. If the package-top surface of the packaging structure is exposed from the reflective structure as a primary light-emitting top surface, a top-view type linear light-emitting device is formed. A substantially transparent light-transmitting material and/or a photoluminescent material can be configured to be included inside the packaging structure. In this configuration, a primary light emitted from the LED semiconductor chips is directed to pass through the packaging structure and radiated outward from the primary light-emitting surface. Therefore, a monochromatic light or a white light with a uniformly distributed linear radiation pattern can be generated using the chip-scale linear light-emitting device. 1. A linear light-emitting device comprising:a submount substrate comprising a substrate-top surface, wherein a first horizontal direction, a second horizontal direction and a normal direction perpendicular to each other are defined on the substrate-top surface;a plurality of LED semiconductor chips disposed on the substrate-top surface of the submount substrate along the first horizontal direction, wherein each of the LED semiconductor chips includes a chip-upper surface, a chip- ...

Backlight module and display device

A backlight module includes a light source, a light guide plate and a light-adjusting member. A light source chromaticity is measured from light generated by the light source. The light guide plate has a light-incident surface and a light-emitting surface. Light generated by the light source enters the light guide plate and emits out from the light-emitting surface. With the light-adjusting member, a first light guide plate chromaticity is measured from the light-emitting surface. There is a first difference value between the first light guide plate chromaticity and the light source chromaticity. Without the light-adjusting member, a second light guide plate chromaticity is measured from the light-emitting surface. There is a second difference value between the second light guide plate chromaticity and the light source chromaticity. The first difference value is different from the second difference value.

Holographic Waveguide Optical Tracker

An object tracker comprises: a source of light; at least one illumination waveguide optically coupled to said source continuing at least one grating lamina for diffracting said light towards an external object; at least one detector waveguide containing a grating lamina for in-coupling and deflecting a first polarization of light reflected from said object into a first waveguide direction and deflecting a second polarization of light reflected from said object into a second waveguide direction; at least one detector optically coupled to said detector waveguide operative to receive light propagating in said first waveguide direction; and at least one detector optically coupled to said detector waveguide operative to receive light propagating in said second waveguide direction. 1. An object tracker for tracking at least one object comprising:a source of illumination light;at least one illumination waveguide optically coupled to said source continuing at least one grating lamina for diffracting said light towards an external object;at least one detector waveguide containing a grating lamina for in-coupling and deflecting a first polarization of light reflected from said object into a first waveguide direction and deflecting a second polarization of light reflected from said object into a second waveguide direction;at least one detector optically coupled to said detector waveguide operative to receive light propagating in said first waveguide direction; andat least one detector optically coupled to said detector waveguide operative to receive light propagating in said second waveguide direction,wherein said object tracker and said object are in relative motion,wherein said first and second waveguide directions correspond to first and second directions of relative object motion.2. The apparatus of wherein said detector waveguide comprises a first detector waveguide and a second detector waveguide sandwiching a half wave plate claim 1 , said apparatus further comprising a ...

Illumination Device and Display Device

Provided is an illumination device that makes it possible to enhance utilization efficiency of light, and a display device that includes the illumination device. The illumination device includes: a light source that is configured to generate light of a first wavelength; a luminescent body that is configured to wavelength-convert the light of the first wavelength to light of a second wavelength, the second wavelength being different from the first wavelength; and a wavelength selective filter that is provided on a light-incident side of the luminescent body, the wavelength selective filter being configured to transmit the light of the first wavelength and to reflect the light of the second wavelength. 1. (canceled)2. A display device comprising:a front casing;a rear casing;a display panel supported by a middle chassis between the front casing and rear casing;at least one light source on a light source substrate configured to emit light of a first wavelength range between the front casing and rear casing;a luminescent body comprising quantum dot particles having an axis of 1 to 100 nanometers and being in a resin positioned to receive the light; andan optical member supported by the middle chassis, the optical member having a light incident surface facing the a luminescent body and a light emission surface having a planar shape that faces the display panel;wherein the luminescent body is configured such that a portion of the light of the first wavelength range is converted to light of at least second wavelength range and is configured to transmits light of the first wavelength through the luminescent body without colliding with the wavelength conversion material to the light incident surface of the optical member.3. The display device of further comprising a wavelength selective filter provided outside the cured resin and being configured to transmit the light of the first wavelength range and to reflect the light of the second wavelength range and a third wavelength ...

Light guiding assembly and fabricating method thereof, backlight module and display device

A light guiding assembly and a fabricating method, a backlight module, and a display device are provided. The light guiding assembly includes a waveguide layer, and a coupling grating structure including at least two gratings, wherein at least one of the at least two gratings is located inside the waveguide layer, and orthographic projections of the at least two gratings on a surface of the waveguide layer at least partially overlap, the coupling grating structure being configured such that incident light propagates in the waveguide layer.

SLIM WAVEGUIDE COUPLING APPARATUS AND METHOD

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure. 112-. (canceled)13. An illumination structure comprising:a waveguide having (i) top and bottom opposed surfaces, (ii) an in-coupling region for receiving light, (iii) an out-coupling region for emitting light from the waveguide, and (iv) a depression in the top surface thereof;a discrete light source disposed proximate the bottom surface of the waveguide in the in-coupling region;at least partially filling at least a portion of the depression, a conical mirror for reflecting light from the discrete light source into the out-coupling region; anda phosphor layer for converting a wavelength of light emitted by the discrete light source to a different wavelength.14. The illumination structure of claim 13 , further comprising an air gap disposed between the conical mirror and the depression.15. The illumination structure of claim 14 , wherein a thickness of the air gap is selected from the range of approximately 10 μm to approximately 200 μm.16. The illumination structure of claim 14 , wherein a thickness of the air gap is less than approximately 10 μm.17. The illumination structure of claim 14 , wherein at least a portion of the air gap is filled with a filler material.18. The illumination structure of claim 17 , wherein the filler material is adhesive.19. The illumination structure of claim 17 , wherein an index of refraction of the filler material is less than an index of refraction of the waveguide.20. The illumination structure of claim 17 , wherein the filler material comprises silicone.21. The illumination structure of claim 13 , further comprising a substantially flat ...

MULTI-STACK JOINED BODY, METHOD OF MANUFACTURING THE SAME, AND DISPLAY DEVICE INCLUDING THE SAME

A multi-stack joined body includes a first transparent member, a second transparent member disposed on the first transparent member, and an intermediate layer interposed between the first transparent member and the second transparent member, where a joining region in which a physical boundary is not provided between the first transparent member and the intermediate layer and between the second transparent member and the intermediate layer is provided across the first transparent member, the intermediate layer, and the second transparent member. 1. A multi-stack joined body comprising:a first transparent member;a second transparent member disposed on the first transparent member; andan intermediate layer interposed between the first transparent member and the second transparent member,wherein:a joining region in which a physical boundary is not provided between the first transparent member and the intermediate layer and between the second transparent member and the intermediate layer is provided across the first transparent member, the intermediate layer, and the second transparent member.2. The multi-stack joined body of claim 1 , wherein:a physical boundary is provided at a part of a contact surface between the first transparent member and the intermediate layer; anda physical boundary is provided at a part of a contact surface between the second transparent member and the intermediate layer.3. The multi-stack joined body of claim 1 , wherein:a refractive index of the joining region is different from a refractive index of the first transparent member, a refractive index of the second transparent member, and a refractive index of the intermediate layer; anda density of the joining region is different from a density of the first transparent member, a density of the second transparent member, and a density of the intermediate layer.4. The multi-stack joined body of claim 1 , wherein:the first transparent member and the second transparent member are spaced apart from ...

LIGHT-EMITTING MODULE

A light-emitting module includes: a light-guiding plate having a first main surface serving as a light extracting surface and a second main surface opposite to the first main surface, a recess defined in the second main surface by at least one lateral surface and a base surface; a wavelength conversion member in the recess of the light-guiding plate, the wavelength conversion member having a first surface facing the base surface defining the recess, a second surface opposite to the first surface, and at least one lateral surface between the first surface and the second surface; at least one light-emitting element bonded to the second surface of the wavelength conversion member; a light-transmissive member disposed between the lateral surface defining the recess and the lateral surface of the wavelength conversion member; and a light-reflective member covering the second main surface of the light-guiding plate and lateral surfaces of the light-emitting element.

Planar remote phosphor illumination apparatus

In various embodiments, an illumination apparatus features spatially separated input and output regions, a light source, a phosphor for light conversion, and an out-coupling structure.

PATTERNING OF HIGH REFRACTIVE INDEX GLASSES BY PLASMA ETCHING

Plasma etching processes for forming patterns in high refractive index glass substrates, such as for use as waveguides, are provided herein. The substrates may be formed of glass having a refractive index of greater than or equal to about 1.65 and having less than about 50 wt % SiO. The plasma etching processes may include both chemical and physical etching components. In some embodiments, the plasma etching processes can include forming a patterned mask layer on at least a portion of the high refractive index glass substrate and exposing the mask layer and high refractive index glass substrate to a plasma to remove high refractive index glass from the exposed portions of the substrate. Any remaining mask layer is subsequently removed from the high refractive index glass substrate. The removal of the glass forms a desired patterned structure, such as a diffractive grating, in the high refractive index glass substrate. 128.-. (canceled)29. A method of forming an optical waveguide structure , the method comprising:identifying desired dimensional characteristics of first features to be formed in a high-index glass substrate;identifying etching characteristics of an etching process that is used for forming at least the first features in the high-index glass substrate;determining, based on the identified etching characteristics, biased dimensional characteristics of second features of a patterned layer that is to be formed on the high-index glass substrate prior to forming the first features in the high-index glass substrate;forming the patterned layer on the high-index glass substrate, the forming including forming the second features in the patterned layered, the second features having the biased dimensional characteristics; andtransferring, using the etching process, a pattern of the second features, having the biased dimensional characteristics, into the high-index glass to form the first features, having the desired dimensional characteristics in the high-index ...

BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME

A backlight unit (BLU) and a liquid crystal display apparatus having the BLU are provided. The BLU includes a plurality of light-emitting diodes (LEDs) configured to emit blue light, a fluorescent member configured to convert the blue light emitted from the plurality of LEDs into tricolor light and emit the tricolor light, and a filter disposed between the fluorescent member and the plurality of LEDs, and configured to selectively filter a first wavelength area of the tricolor light emitted from the fluorescent member toward the plurality of LEDs, and reflect a second wavelength area of the tricolor light emitted from the fluorescent member toward an output direction. 1. A backlight unit (BLU) comprising:a plurality of light-emitting diodes (LEDs) configured to emit blue light;a fluorescent member configured to convert the blue light emitted from the plurality of LEDs into tricolor light, and emit the tricolor light; anda filter disposed between the fluorescent member and the plurality of LEDs, and configured to selectively filter a first wavelength area of the tricolor light emitted from the fluorescent member toward the plurality of LEDs, and reflect a second wavelength area of the tricolor light emitted from the fluorescent member toward an output direction.2. The BLU of claim 1 , wherein the fluorescent member is a quantum dot member.3. The BLU of claim 2 , wherein the filter is further configured to transmit a short wavelength of the tricolor light emitted from the fluorescent member toward the plurality of LEDs and reflect a long wavelength of the tricolor light toward the output direction.4. The BLU of claim 3 , wherein the short wavelength comprises a blue light area and an ultraviolet light area claim 3 , and the long wavelength comprises a red light area claim 3 , a green light area claim 3 , and an infrared light area.5. The BLU of claim 1 , wherein the fluorescent member is further configured to maintain a preset optical distance from the plurality of ...

METHOD OF MANUFACTURING LIGHT EMITTING MODULE AND LIGHT EMITTING MODULE

A method of manufacturing a light emitting module according to the present disclosure includes: preparing a light guide plate that comprises a first main surface serving as a light-emitting surface and a second main surface opposite to the first main surface; respectively providing light emitting elements on the second main surface so as to correspond to each of a plurality of optically functional portions provided on the first main surface of the light guide plate; and forming wires electrically connecting the plurality of light emitting elements. 1. A method of manufacturing a light emitting module comprising:preparing a light guide plate that comprises a first main surface serving as a light-emitting surface and a second main surface opposite to the first main surface;providing a plurality of optically functional portions at the first surface of the light guide plate;providing a plurality of light emitting elements at the second main surface so as to correspond each of the plurality of light emitting elements respectively to each of the plurality of optically functional portions; andforming wires electrically connecting the plurality of light emitting elements.2. The method of manufacturing a light emitting module according to claim 1 , wherein preparing a light guide plate comprises forming concave portions to form the optically functional portions.3. The method of manufacturing a light emitting module according to claim 1 , wherein a size in the top view of each of the optically functional portions is larger than a size in the top view of each of the light emitting elements.4. The method of manufacturing a light emitting module according to claim 1 , wherein each of the optically functional portions comprises a central concave portion and annular convex portion surrounding the convex portion.5. The method of manufacturing a light emitting module according to claim 2 , wherein the concave portions are formed so that side surfaces of the concave portions have ...

Mobile terminal

Disclosed is a mobile terminal devised to achieve a reduced F-number and an increased T-number by enhancing the brightness of an optical system provided therein. In the mobile terminal including an optical module that configures a single optical system, the optical module includes a lens group configured with five or more refractive lenses including at least one glass lens. The glass lens has a thickness equal to or greater than 0.3 mm, an effective diameter equal to or greater than 1.5 mm and equal to or less than 8.0 mm, a refractive index below 1.6, and an Abbe's number equal to or greater than 60.

Backlight Module and Liquid Crystal Display Device

The present invention discloses a backlight module, comprising: a light guide plate, which comprises at least one light incident side; a light source, which is provided adjacent to the light incident side; and at least one quantum dot film strip, which is provided between the light source and the light incident side; wherein, the light emitted from the light source is irradiated to the light incident side through the quantum dot film strip. The present invention further discloses a liquid crystal display device having the backlight module.

BACKLIGHT, DISPLAY PANEL AND DISPLAY DEVICE

The present invention provides a backlight, a display panel and a display device, The backlight includes: a first light source and a second light source, the brightness of light emitted from the first light source is different from that of light emitted from the second light source; and a light guide plate, the first light source and the second light source are disposed above the same end surface of an edge of the light guide plate, and light-emitting surfaces of the first light source and the second light source face the end surface of the edge of the light guide plate, a light mixing structure is disposed on the end surface of the edge of light guide plate and is capable of mixing the light emitted from the first light source and the light emitted from the second light source into light with uniform brightness. 1. A backlight , including:a first light source and a second light source, wherein the brightness of light emitted from the first light source is different from that of light emitted from the second light source; anda light guide plate, wherein the first light source and the second light source are disposed above the same end surface of an edge of the light guide plate, light-emitting surfaces of the first light source and the second light source face the end surface of the edge of the light guide plate, and a light mixing structure is disposed on the end surface of the edge of the light guide plate and is capable of mixing the light emitted from the first light source and the light emitted from the second light source into light with uniform brightness.2. The backlight according to claim 1 , wherein claim 1 , the number of the first light source and the number of the second light source are both greater than one claim 1 , and the brightness of the light emitted from each of the first light sources is lower than that of the light emitted from each of the second light source.3. The backlight according to claim 2 , wherein claim 2 , the light mixing structure ...

Dispersion compensation in volume bragg grating-based waveguide display

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

Spatially multiplexed volume bragg gratings with varied refractive index modulations for waveguide display

A waveguide display includes a waveguide transparent to visible light, a first volume Bragg grating (VBG) on the waveguide and characterized by a first refractive index modulation, and a second reflection VBG on the waveguide and including a plurality of regions characterized by different respective refractive index modulations. The first reflection VBG is configured to diffract display light in a first wavelength range and a first field of view (FOV) range such that the display light in the first wavelength range and the first FOV range propagates in the waveguide through total internal reflection to the plurality of regions of the second reflection VBG. The plurality of regions of the second reflection VBG are configured to diffract the display light in different respective wavelength ranges within the first wavelength range and the first FOV range.

Spatially multiplexed volume bragg gratings with varied thicknesses for waveguide display

A waveguide display includes a waveguide and a grating coupler configured to couple display light into or out of the waveguide. The grating coupler includes at least a first grating layer and a second grating layer arranged in a stack. The first grating layer is characterized by a first thickness and includes a first transmission VBG configured to diffract display light of a first wavelength from a first field of view. The second grating layer is characterized by a second thickness greater than the first thickness and includes a second transmission VBG configured to diffract display light of the first wavelength from a second field of view greater than the first field of view.

Guided mode resonance device for optical beam tapping and imaging without rainbows

Waveguide enhanced resonant diffraction is provided in grating structures having negligible non-resonant diffraction by the grating. This is done by making the grating thickness much less than any relevant wavelength, and by having the grating in proximity to a waveguide for diffractive coupling to and from a mode of the waveguide. Material absorption in the grating material can be used to suppress undesired diffraction orders. The resulting structures can provide rainbow-free diffractive optical sampling. 1. Optical apparatus comprising:an optical waveguide;a diffraction grating disposed in proximity to the optical waveguide such that incident light on the diffraction grating can also diffractively couple to the optical waveguide;wherein a first diffraction process is non-resonant diffraction of the incident light by the diffraction grating without coupling to the optical waveguide;wherein a second diffraction process is resonant diffraction of the incident light via 1) diffractive coupling of the incident light to a guided mode of the optical waveguide to provide guided light, followed by 2) additional diffraction of the guided light into diffracted radiation;wherein an efficiency of the second diffraction process is substantially larger than any efficiency of the first diffraction process at a predetermined incidence angle and frequency of the incident light.2. The apparatus of claim 1 , wherein the efficiency of the second diffraction process is 10× or more greater than any efficiency of the first diffraction process.3. The apparatus of claim 1 , wherein a combined efficiency of parasitic diffraction processes is 0.1% or less.4. The apparatus of claim 1 , wherein a thickness of the diffraction grating is between 0.6 nm and 10 nm.5. The apparatus of claim 1 , wherein a ratio of grating line width to grating period is selected to enhance diffraction efficiency into a selected diffraction order.6. The apparatus of claim 1 ,wherein the waveguide is a planar ...

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

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 ...

Backlight modules nad display panels

The present disclosure relates to a backlight module and a display panel. The backlight module includes a light source, a QD tube and a light guiding plate, the light source being arranged at a lateral side of the light guiding plate, the QD tube being arranged between the light source and the light guiding plate. A light incident surface of the light guiding plate depresses toward an internal of the light guiding plate such that one side of the QD tube is embedded into the light guiding plate and the other side of the QD tube abuts against the light source. The structure is simple and may be easily assembled. In addition, such configuration contributes to the light and thin design.

Backlight unit and liquid crystal display device including same

Disclosed is a backlight unit that includes: a light guide plate that guides light, using internal total reflection; a plurality of short wavelength light sources that are disposed on a side of the light guide plate and radiate short wavelength lights into the light guide plate; a three-color light source array that is disposed on the bottom or the top of the light guide plate and includes a plurality of color conversion materials exciting the short wavelength lights from the short wavelength light sources into red or green or blue; and a lenticular lens array sheet that is disposed between the three-color light source array and the liquid crystal panel and refracts the three color lights emitted from the three-color light source array into the subpixels.

QUANTUM DOT SHEET AND LIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME

Aspects according to one or more embodiments of the present invention are directed toward a quantum dot sheet, and a light unit and a liquid crystal display including the same, having desirable features of being capable of increasing light efficiency. According to exemplary embodiments of the present invention, it is possible to increase light efficiency by forming a quantum dot sheet including quantum dots in a pattern in which multiple layers having different refractive indexes are repeatedly stacked. 1. A quantum dot sheet comprising: a first polymer layer; and', 'a second polymer layer having a refractive index different from the first polymer layer, the first and second polymer layers comprising red quantum dots and green quantum dots dispersed therein; and, 'a color conversion film comprisinga barrier film on at least one surface of the color conversion film,wherein the first polymer layer and the second polymer layer are repeatedly stacked.2. The quantum dot sheet of claim 1 , wherein a total number of each of the first polymer layer and the second polymer layer which are repeatedly stacked is in a range of 10 to 30.3. The quantum dot sheet of claim 2 , wherein each of the first polymer layer and the second polymer layer comprises both of the red quantum dots and the green quantum dots.4. The quantum dot sheet of claim 2 , whereinthe first polymer layer exclusively comprises the red quantum dots, andthe second polymer layer exclusively comprises the green quantum dots.5. The quantum dot sheet of claim 3 , wherein 0.4 to 0.8 wt % of the quantum dots are included based on a total weight of the first polymer layer and the second polymer layer.6. The quantum dot sheet of claim 5 , wherein a difference between refractive indexes of the first polymer layer and the second polymer layer is in a range of 0.4 to 2.0.7. The quantum dot sheet of claim 6 , wherein the first polymer layer and the second polymer layer comprise two materials selected from the group ...

LIGHT CONVERSION DEVICE AND MANUFACTURING METHOD THEREOF, AND LIGHT SOURCE UNIT INCLUDING THE LIGHT CONVERSION DEVICE

A light source unit includes a light guide plate which includes a front surface and a rear surface which are opposite to each other and a side between and connecting the front surface and the rear surface, a light conversion device on the side of the light guide plate; and a light source which generates and supplies light to the light conversion device. The light conversion device includes, a sealed tube, a light conversion member within the sealed tube and a space other than an area in the tube which is occupied by the light conversion member, defined in the tube 1. A light conversion device , comprising:a sealed tube;a light conversion member within the sealed tube; anda space other than an area in the tube which is occupied by the light conversion member, defined in the tube.2. The light conversion device of claim 1 , whereinthe light conversion member is a film which comprises a quantum dot material and a resin, and has a band shape.3. The light conversion device of claim 2 , whereinthe light conversion member further comprises a scattering agent.4. The light conversion device of claim 2 , whereinthe tube comprises glass or a polymer.5. The light conversion device of claim 4 , whereinthe tube is transparent or translucent.6. The light conversion device of claim 2 , whereinthe quantum dot material comprises a Si-containing nanocrystal, a group II-VI compound semiconductor nanocrystal, a group III-V compound semiconductor nanocrystal, a group IV-VI compound semiconductor nanocrystal or a combination thereof.7. The light conversion device of claim 6 , whereinthe quantum dot material comprises CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, GaN, GaP, GaAs, AlN, AlP, AlAs, InN, InP, InAs, GaNP, GaNAs, GaPAs, AlNP, AlNAs, AlPAs, InNP, InNAs, InPAs, ...

OPTICAL MEMBER AND DISPLAY DEVICE INCLUDING THE SAME

An optical member includes a light guide plate having a top surface, a bottom surface, and side surfaces that connect the top surface and the bottom surface three-dimensionally and have a smaller area than the top surface and the bottom surface, a low refractive layer disposed on a side surface of the light guide plate and having a lower refractive layer than the light guide plate, and a wavelength conversion layer disposed on the low refractive layer, the wavelength conversion layer receiving first wavelength light and converting the first wavelength light into second wavelength light, which is of a different wavelength band from the first wavelength light. 1. An optical member , comprising:a light guide plate comprising a top surface, a bottom surface, and side surfaces which are disposed in between and connect the top surface and the bottom surface, wherein each of the side surfaces has a smaller area than each of the top surface and the bottom surface;a low refractive layer disposed on a side surface of the light guide plate and having a lower refractive index than the light guide plate; anda wavelength conversion layer disposed on the low refractive layer, the wavelength conversion layer configured to receive a first wavelength light and convert the first wavelength light into a second wavelength light which is of a different wavelength band from the first wavelength light,wherein:the low refractive layer comprises a first surface, which faces the side surface of the light guide plate where the low refractive layer is disposed, a second surface, which is opposite to the first surface of the low refractive layer, and edges, andthe wavelength conversion layer comprises a first surface, which faces the second surface of the low refractive layer, a second surface, which is opposite to the first surface of the wavelength conversion layer, and side surfaces, which are disposed in between and connect the first and second surfaces of the wavelength conversion layer.2. ...

BACKLIGHT UNIT, DISPLAY DEVICE, AND METHOD OF MANUFACTURING DISPLAY DEVICE

A display device includes a backlight unit and a display panel disposed above the backlight unit, where the backlight unit includes a light guide plate, a housing which is disposed at one side of the light guide plate and accommodates a wavelength converting member, and a flexible glass film which covers one side of the housing, and a first laser welding part is disposed between the flexible glass film and the housing. 1. A backlight unit comprising:a light guide plate;a housing which is disposed at one side of the light guide plate and accommodates a wavelength converting member; anda flexible glass film which covers one side of the housing,wherein a first laser welding part is disposed between the flexible glass film and the housing.2. The backlight unit of claim 1 , wherein the flexible glass film includes:a cover portion which covers the one side of the housing;a spaced-apart portion overlapping the light guide plate and spaced apart from the light guide plate; anda contact portion contacting the light guide plate.3. The backlight unit of claim 2 , wherein the spaced-apart portion is curved with a predetermined curvature.4. The backlight unit of claim 2 , wherein a second laser welding part is disposed between the light guide plate and the contact portion.5. The backlight unit of claim 4 , wherein the second laser welding part includes a plurality of welding dots.6. The backlight unit of claim 4 , wherein the second laser welding part includes a first line and a second line which extend in parallel to each other and include a plurality of welding dots or a welding line.7. The backlight unit of claim 1 , wherein a thickness of the flexible glass film is in a range of about 5 micrometers to about 50 micrometers.8. The backlight unit of claim 1 , wherein the first laser welding part includes a continuous welding line.9. The backlight unit of claim 1 , wherein a second laser welding part is disposed between the light guide plate and the housing.10. The backlight ...

ILLUMINATION DEVICE, ILLUMINATION EQUIPMENT, AND DISPLAY DEVICE

An illumination device () includes a light guide plate () and a light source unit () which includes a substrate () and a plurality of LED chips () disposed on the substrate (), and which is disposed in a position at which emitted light of the LED chips () enters a light entrance portion () of the light guide plate (). The LED chips () are disposed to form a plurality of rows on the substrate (), and are disposed to line up in a direction which orthogonally intersects the rows between each of the rows. 1. An illumination device , comprising:a light guide plate; anda light source unit which includes a substrate and a plurality of LED chips disposed on the substrate, and which is disposed such that emitted light of the LED chips enters a light entrance portion of the light guide plate,wherein the LED chips are disposed to form a first row and a second row parallel to each other on the substrate, and are disposed to line up in an orthogonal direction orthogonally intersecting a direction of the first row and the second row,wherein the light source unit further includes a single package in which two of the LED chips which are adjacent in the orthogonal direction are stored,wherein a shape of each of the LED chips is rectangular, and a longitudinal direction of each of the LED chips and a longitudinal direction of the substrate are same direction.2. (canceled)3. The illumination device according to claim 1 , wherein the LED chips are optically isolated from each other claim 1 , and luminescent colors thereof are the same.4. The illumination device according to claim 3 , wherein the LED chips form an LED which emits white light by being combined with a phosphor.5. The illumination device according to claim 1 , wherein the LED chips which are adjacent in the orthogonal direction are combined with a different phosphor for each of the first row and the second row.6. The illumination device according to claim 5 , wherein combinations of the LED chips and the phosphors emit ...

LIGHT GUIDE PLATE AND DISPLAY DEVICE HAVING THE SAME

A light guide plate includes a light conversion portion which transmits a transmission incident light having a first wavelength, and converts a conversion incident light having the first wavelength to a converted light having a second wavelength; and a light guide portion which guides the transmission incident light and the converted light in a first direction. The light conversion portion includes a light incident surface which receives the transmission incident light and the conversion incident light, an inclined side surface inclined with respect to the light incident surface to form an inclined angle with the light incident surface, quantum dots which convert light having the first wavelength to light having the second wavelength and are distributed in a quantum area on the light incident surface and the inclined side surface, and a reflector adjacent to the inclined side surface in a second direction opposite to the first direction. 1. A light guide plate comprising: a transmission incident light having a first wavelength is transmitted, and', 'a conversion incident light having the first wavelength is converted to a converted light having a second wavelength different from the first wavelength; and, 'a light conversion portion at which'}a light guide portion which guides the transmitted transmission incident light and the converted light in a first direction away from the light conversion portion, a light incident surface which faces the light source and receives the transmission incident light and the conversion incident light;', 'an inclined side surface inclined with respect to the light incident surface to form an inclined angle with the light incident surface;', 'quantum dots which convert light having the first wavelength to light having the second wavelength, the quantum dots distributed in a quantum area disposed on the light incident surface and on the inclined side surface; and', 'a reflector disposed adjacent to the inclined side surface in a second ...

LIGHT GUIDE DEVICE AND VIRTUAL IMAGE DISPLAY APPARATUS

A light guide device may be incorporated into a virtual image display apparatus, and functionally includes a light-incident part for entrance of picture lights, a light guide part that guides the picture lights via the light-incident part, and a light-exiting part that outputs the picture lights from the light guide part to a position of an eye. In the light guide device, light guide that enables non-diffraction virtual image formation is performed with respect to lateral first directions and a pupil size is enlarged by first and second diffraction optical elements with respect to longitudinal second directions. 1. A light guide device comprising:a light-incident part into which picture lights enter;a light guide part that guides the picture lights via the light-incident part; anda light-exiting part that outputs the picture lights from the light guide part to a position of an eye,wherein light guide that contributes to non-diffraction virtual image formation is performed with respect to first directions along a predetermined surface covering a front of the eye, and a pupil size is enlarged by a diffraction optical element with respect to second directions crossing the first directions along the predetermined surface.2. The light guide device according to claim 1 , wherein the light guide part has a first portion on the light-incident part side and a second portion on the light-exiting part side claim 1 , anda virtual image is geometrically and optically formed with respect to the first directions by the light-incident part and the first portion, and a virtual image using diffraction is formed with respect to the second directions by the second portion and the light-exiting part.3. The light guide device according to claim 2 , wherein the first portion is formed by an optical member having power at least with respect to the first directions claim 2 , and an intermediate image is formed inside.4. The light guide device according to claim 2 , wherein the first portion ...

OPTICAL MEMBER AND DISPLAY DEVICE INCLUDING THE SAME

An optical member includes a light guide plate, a first low refractive layer, a wavelength conversion layer, and a passivation layer. The first low refractive layer is disposed on the light guide plate. A refractive index of the first low refractive layer is smaller than a refractive index of the light guide plate. The wavelength conversion layer is disposed on the first low refractive layer. The passivation layer is disposed on the wavelength conversion layer. The passivation layer covers a side surface of the wavelength conversion layer and a side surface of the first low refractive layer on at least one side. 1. An optical member comprising:a light guide plate;a low refractive layer disposed on the light guide plate, a refractive index of the low refractive layer being smaller than a refractive index of the light guide plate;a barrier layer disposed on the low refractive layer;a wavelength conversion layer disposed on the barrier layer; anda passivation layer disposed on the wavelength conversion layer, the passivation layer covering a side surface of the wavelength conversion layer on at least one side.2. The optical member of claim 1 , wherein the barrier layer comprises an inorganic material.3. The optical member of claim 2 , wherein the light guide plate comprises an organic material.4. The optical member of claim 1 , wherein the passivation layer comprises an inorganic material.5. The optical member of claim 1 , wherein the side surface of the wavelength conversion layer is aligned with a side surface of the barrier layer or located further inwards than the side surface of the barrier layer.6. The optical member of claim 1 , wherein the refractive index of the low refractive layer is 1.2 to 1.4.7. The optical member of claim 6 , wherein the low refractive layer comprises voids.8. A display device comprising: a light guide plate;', 'a low refractive layer disposed on the light guide plate, a refractive index of the low refractive layer being smaller than a ...

Light Emitting Unit, Display, And Lighting Apparatus

There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component. 118-. (canceled)19. A display comprising:a liquid crystal display panel; anda lighting apparatus positioned on a rear side of the liquid crystal display panel,wherein the lighting apparatus comprises:a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source, the wavelength conversion member including a wavelength conversion material that includes quantum dots, the quantum dots having an axis of 1 nanometer to 100 nanometers and being in a resin positioned to receive the light;an optical component having a light incident surface in opposition to the plurality of light emitting sections, in which the optical component includes a light emission surface that faces the rear side of the liquid crystal display panel and is perpendicular to the light incident surface, in which the light emission surface has an uneven pattern; anda prevention structure suppressing entry of light from a first light emitting section into an adjacent light emitting section, and in which the prevention structure has a number of concave sections, each concave section being configured in relation to a respective end of a respective one of plurality of light emitting sections.20. The display of claim 19 , wherein ...

Display Illumination Systems

An electronic device may have a reflective display with a pixel array that generates images. The reflective display may be illuminated by an illumination system. Light from the illumination system may be reflected by the pixel array as image light. The image light may be provided to a viewer using a waveguide with diffractive input and output couplers. The illumination system may have a waveguide. The illumination system may also have a light source such as one or more light-emitting diodes. Light from the light source may be coupled into the waveguide of the illumination system by a diffractive coupler such as volume hologram that serves as an input coupler. Light from the light source may be routed to the display to illuminate the display using the waveguide in the illumination system and a diffractive coupler such as a volume hologram that serves as an output coupler. 1. A device with an illumination system , comprising:a pixel array;a light source;a waveguide;a diffractive input coupler that couples light from the light source into the waveguide; anda diffractive output coupler that couples light from the waveguide out of the waveguide and onto the pixel array to illuminate the pixel array and reflect image light from the pixel array.2. The device defined in further comprising:an optical system having an input portion and an output portion, wherein the optical system is configured to receive the image light from the pixel array with the input portion.3. The device defined in wherein the optical system includes an optical system waveguide that forms at least part of the input portion and at least part of the output portion and that receives the image light using the input portion.4. The device defined in wherein the output portion includes a diffractive optical system output coupler that is configured to couple the image light out of the optical system waveguide.5. The device defined in wherein the pixel array is tilted with respect to the diffractive output ...

Backlight Module

A backlight module including a light source, a light guide plate, and a light-transmitting structure is provided. The light source includes LEDs each having a light exit surface. The light guide plate has a light incident surface and a light exit surface perpendicular to the light incident surface. The light-transmitting structure has a light incident surface and a light exit surface opposite to the light incident surface, and is disposed to fill a gap between the light exit surfaces of the light source and the light incident surface of the light guide plate. The light exit surfaces of the light source are connected to the light incident surface of the light-transmitting structure; the light exit surface of the light-transmitting structure is connected to the light incident surface of the light guide plate; the light exit surface of the light guide plate outputs diffused light. The invention may realize narrower bezel design, reduce the number of the LEDs, and enhance light incident coupling efficiency between the light source and the light guide plate. 1. A backlight module comprising:a light source comprising a plurality of LEDs, each of the LEDs having a light exit surface;a light guide plate made of transparent material, the light guide plate having a light incident surface and a light exit surface perpendicular to the light incident surface; and,a light-transmitting structure made of transparent material, the light-transmitting structure having a light incident surface and a light exit surface opposite to the light incident surface, the light-transmitting structure being disposed between the light exit surfaces of the light source and the light incident surface of the light guide plate, and filling a gap between the light exit surfaces of the light source and the light incident surface of the light guide plate;wherein the light exit surfaces of the light source are connected to the light incident surface of the light-transmitting structure; the light exit ...

DISPLAY DEVICE WITH DIFFRACTION GRATING HAVING REDUCED POLARIZATION SENSITIVITY

Diffraction gratings provide optical elements in head-mounted display systems to, e.g., incouple light into or out-couple light out of a waveguide. These diffraction gratings may be configured to have reduced polarization sensitivity. Such gratings may, for example, incouple or outcouple light of different polarizations with similar level of efficiency. The diffraction gratings and waveguides may include a transmissive layer and a metal layer. The diffraction grating may comprises a blazed grating. 1. A head-mounted display system comprising:a head-mountable frame;a light projection system configured to output light to provide image content;a waveguide supported by the frame, the waveguide comprising a substrate configured to guide at least a portion of the light from said light projection system coupled into said waveguide;a first diffraction grating comprising material different than said substrate over said substrate;a first layer disposed over said first diffraction grating; anda second layer comprising metal disposed over said first diffraction grating such that said diffraction grating has a first diffraction efficiency for a first polarization over a range of angles of light incident thereon and a second diffraction efficiency for a second polarization over the range of angles of light incident thereon, the first diffraction efficiency being from 1 to 2 times the second diffraction efficiency.2. The head-mounted display system of claim 1 , wherein the substrate comprises material having an index of refraction of at least 1.9.3. The head-mounted display system of claim 1 , wherein the first diffraction grating material comprises polymer.4. The head-mounted display of claim 1 , wherein the first diffraction grating material comprises imprintable material.5. The head-mounted display system of claim 1 , wherein the first diffraction grating material has a refractive index of 1.4 to 1.95.6. The head-mounted display system of claim 1 , wherein the first diffraction ...

DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME

Provided are a display device and a method of fabricating the display device. The display device includes a display panel, a backlight unit, and a light emitting sheet. The backlight unit is disposed under the display panel to provide light to the display panel. The light emitting sheet is disposed between the display panel and the backlight unit. The light emitting sheet includes a lower film, a first light emitting resin pattern layer, an upper film, and a second light emitting resin pattern layer. The first light emitting resin pattern layer is disposed on the lower film and includes a plurality of first protrusions and a plurality of first grooves defined between the first protrusions. The upper film is disposed on the first light emitting resin pattern layer. The second light emitting resin pattern layer is disposed between the first light emitting resin pattern layer and the upper film. 1. A display device , comprising:a display panel displaying an image;a backlight unit disposed under the display panel to provide light to the display panel; anda light emitting sheet disposed between the display panel and the backlight unit,wherein the light emitting sheet comprises:a lower film;a first light emitting resin pattern layer disposed on the lower film, the first light emitting resin pattern layer comprising a plurality of first protrusions and a plurality of first grooves defined between the first protrusions;an upper film disposed on the first light emitting resin pattern layer; anda second light emitting resin pattern layer disposed between the first light emitting resin pattern layer and the upper film.2. The display device of claim 1 , wherein the second light emitting resin pattern layer comprises:a plurality of second protrusions; anda plurality of second grooves defined between the plurality of second protrusions,wherein the second protrusions contact the first grooves, respectively, andthe first protrusions contact the second grooves, respectively.3. The ...

Slim waveguide coupling apparatus and method

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure.

Wavelength conversion member, backlight unit, polarizing plate, liquid crystal panel, and liquid crystal display device

Provided is a wavelength conversion member, including: a wavelength conversion layer containing a quantum dot which is excited by excitation light and emits fluorescent light; and an adjacent layer directly laminated on the wavelength conversion layer, in which the shape of an interface between the wavelength conversion layer and the adjacent layer includes an irregular shape formed of a concave portion and a convex portion. Provided are a backlight unit, a polarizing plate, a liquid crystal panel, and a liquid crystal display device: including the wavelength conversion member.

Method of manufacturing directional backlight apparatus and directional structured optical film

Disclosed is a manufacturing method for a stepped imaging directional backlight apparatus which may include a structured optical film and a tapered body. The structured optical film may include multiple optical functions and may be assembled by folding onto the tapered body, reducing cost and complexity of manufacture. 16-. (canceled)7. A stepped waveguide comprising:a tapered optical body comprising substantially planar sides that are tapered with respect to each other, and further sides extending between the planar sides; anda structured optical film formed on substrate that comprises a polymer film, the structured optical film comprising a light extraction region and an edge region, wherein the light extraction region comprises a plurality of guiding features and a plurality of extraction features, wherein the extraction features and the guiding features are connected to and alternate with one another respectively, and the edge region comprises a further optical element,the light extraction region of the structured optical film being attached to one of the planar sides of the optical body, the edge region being folded and attached to one of the further sides of the optical body.8. A stepped waveguide according to claim 7 , wherein the edge region comprises a further optical element which is a reflective Fresnel element.9. A stepped imaging directional waveguide according to claim 8 , whereinthe further sides include sides at the ends of the waveguide in a direction in which the substantially planar sides are tapered, being a thick further side and a thin further side, andthe edge region which comprises the further optical element which is the reflective Fresnel element is folded and attached to the thick further side.10. A stepped waveguide according to claim 9 , wherein the structured optical film further comprises a further edge region which comprises an input optical element and which is folded and attached to the thin further side.11. A stepped waveguide ...

Backlight module and a display device

A backlight module and a display device are disclosed. The backlight module includes a backlight source for emitting a blue light; a light guide plate having a light-incident surface and a light-emitting surface; a red quantum dot layer; and a green quantum dot layer; wherein the red quantum dot layer and the green quantum dot layer are respectively located at the light-incident surface and the light-emitting surface, the blue light emitted from the backlight source sequentially passes through the red quantum dot layer, the light guide plate and the green quantum dot layer to emit out. The present invention can increase the light efficiency of the backlight module and a display effect of the display device.

NVIS COMPATIBLE BACKLIGHT DEVICE AND LCD USING THE SAME

A backlight device for a liquid crystal display containing a substantially planar light guide with a light emission surface and a light-collecting portion opposing the light emission surface. A pair of opposing side portions may define the periphery of the light guide. A first plurality of LEDs are placed so as to direct the emitted light into the light-collecting portion. An NVIS filter is preferably placed adjacent to at least one of the side portions. A second plurality of LEDs are placed to direct the emitted light through the NVIS filter and into a side portion of the light guide. Alternative embodiments can contain NVIS filters and LEDs along additional edge portions of the light guide. Some embodiments may use directing elements or slanted surfaces of the light guide to direct the light from the second plurality of LEDs into the edge portions of the light guide. 1. A backlight device for a liquid crystal display comprising: a light emission surface;', 'a light-collecting portion opposing the light emission surface;', 'four edge portions defining a periphery of the planar light guide;, 'a substantially planar light guide comprisinga first plurality of LEDs arranged to direct the emitted light from the first plurality of LEDs into the light-collecting portion;a first NVIS filter placed adjacent to one of the edge portions; anda second plurality of LEDs arranged to direct the emitted light from the second plurality of LEDs through the NVIS filter and into an edge portion.2. The backlight device of further comprising:a second NVIS filter placed adjacent to the edge portion opposite the edge portion containing the first NVIS filter; anda third plurality of LEDs arranged to direct the emitted light from the third plurality of LEDs through the second NVIS filter and into the edge portion.3. The backlight device of further comprising:a directing element placed adjacent to the second plurality of LEDs which directs the emitted light from the second plurality of LEDs ...

OPTICAL MEMBER AND DISPLAY DEVICE HAVING THE SAME

Disclosed are an optical member and a display device. The display device includes a light guide plate; a light source on a lateral side of the light guide plate; and a wavelength conversion member between the light source and the light guide plate. The wavelength conversion member includes a receiving part between the light source and the light guide plate; a host in the receiving part; and a plurality of wavelength conversion particles in the host. The receiving part includes a convex part between the light source and the host; and a concave part between the light guide plate and the host. 1. An optical member comprising:a receiving part;a host in the receiving part; anda plurality of wavelength conversion particles in the host,wherein the receiving part comprises:a convex part bulged toward the host; anda concave part that sandwiches the host together with the convex part,wherein the convex part has a triangular prism shape.2. (canceled)3. The optical member of claim 1 , wherein the convex part and the concave part have shapes corresponding to each other.4. (canceled)5. The optical member of claim 1 , wherein the convex part is bulged toward the host.6. (canceled)7. A display device comprising:a light guide plate;a light source on a lateral side of the light guide plate; anda wavelength conversion member between the light source and the light guide plate,wherein the wavelength conversion member comprises:a receiving part between the light source and the light guide plate;a host in the receiving part; anda plurality of wavelength conversion particles in the host, andwherein the receiving part comprises:a convex part between the light source and the host; anda concave part between the light guide plate and the host,wherein the convex part has a triangular prism shape.8. The display device of claim 7 , wherein the convex part and the concave part have shapes corresponding to each other.9. (canceled)10. (canceled)11. The display device of claim 7 , wherein the ...

OPTICAL MEMBER AND DISPLAY DEVICE HAVING THE SAME

Disclosed are an optical member, a display device having the same, and a method of fabricating the same. The optical member includes a receiving part having an empty space therein, a host in the receiving part, a plurality of wavelength conversion particles in the host, a sealing part in the receiving part, and a pre-treatment layer between the sealing part and an inner surface of the receiving part. 1. An optical member comprising:a receiving part;a host in the receiving part; anda plurality of wavelength conversion particles in the host,wherein the receiving part comprises:a light incident part making contact with the host; anda light exit part, in which the host is sandwiched between the light incident part and the light exit part, andwherein a thickness of the light incident part is greater than a thickness of the light exit part.2. The optical member of claim 1 , wherein the light incident part has a thickness of about 100 μm or more.3. The optical member of claim 1 , wherein the light incident part has a thickness in a range of about 100 μm to about 1000 μm.4. The optical member of claim 1 , wherein the light exit part has a thickness in a range of about 10 μm to about 70 μm.5. The optical member of claim 1 , wherein the light exit part has a thickness in a range of about 20 μm to about 50 μm.6. The optical member of claim 1 , wherein the receiving part has a shape extending in one direction claim 1 , and the light incident part claim 1 , the host claim 1 , and the light exit part extend in an extension direction of the receiving part.7. The optical member of claim 1 , wherein the receiving part comprises:a first extension part extending from the light incident part to the light exit part; anda second extension part extending from the light incident part to the light exit part and facing the first extension part while interposing the host therebetween, andwherein the light incident part, the light exit part, the first extension part, and the second extension ...

DIGITIZED GRATING PERIOD

Embodiments of the present disclosure may relate to a digitized grating that may include a first unit cell that has a first period and a first length, where the first period includes a first grating element width and a first space between adjacent grating elements, and where the first length includes a number of first periods. The digitized grating may further include a second unit cell that has a second period and a second length, where the second period is different than the first period and includes a second grating element width and a second space between adjacent grating elements, and where the second length includes a number of second periods. 1. A digitized grating , comprising:a first unit cell having a first period and a first length, wherein the first period includes a first grating element width and a first space between adjacent grating elements, and wherein the first length includes a number of first periods; anda second unit cell having a second period and a second length, wherein the second period is different than the first period and includes a second grating element width and a second space between adjacent grating elements, and wherein the second length includes a number of second periods.2. The digitized grating of claim 1 , further comprising one or more additional first unit cells and one or more additional second unit cells.3. The digitized grating of claim 1 , further comprising:one or more additional unit cells having one or more additional periods and one or more additional lengths, wherein the one or more additional periods are different than the first period and the second period and includes one or more additional widths and further includes one or more additional spaces between the adjacent grating elements, and wherein the one or more additional lengths include a number of the one or more additional periods.4. The digitized grating of claim 1 , wherein a calculation based on the first period claim 1 , the first length claim 1 , the ...

CHOLESTERIC LIQUID CRYSTAL LAYER, METHOD OF FORMING CHOLESTERIC LIQUID CRYSTAL LAYER, LAMINATE, LIGHT GUIDE ELEMENT, AND IMAGE DISPLAY DEVICE

Provided are a cholesteric liquid crystal layer having a high diffraction efficiency, a method of forming the same, and a laminate, a light guide element, and an image display device that include the cholesteric liquid crystal layer. The cholesteric liquid crystal layer is obtained by immobilizing a cholesteric liquid crystalline phase, in which the cholesteric liquid crystal layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, in a cross-section observed with a SEM, bright portions and dark portions are tilted, in a case where a tilt angle of a direction in which an in-plane retardation is minimum with respect to a normal line in a slow axis plane or a fast axis plane is represented by θ2, an absolute value of an optical axis tilt angle φ represented by “sin θ2=n·sin φ (n represents an average refractive index of the cholesteric liquid crystal layer)” is 5° or more. 1. A cholesteric liquid crystal layer that is obtained by immobilizing a cholesteric liquid crystalline phase ,wherein the cholesteric liquid crystal layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction,in a cross-section of the cholesteric liquid crystal layer observed with a scanning electron microscope, bright portions and dark portions derived from the cholesteric liquid crystalline phase are tilted with respect to a main surface of the cholesteric liquid crystal layer,in a case where an in-plane retardation is measured from a direction tilted with respect to a normal direction and a normal line, a measured angle as an angle of a direction in which the in-plane retardation is minimum in any one of a slow axis plane or a fast axis plane with respect to the normal line is represented by θ2,an absolute value of an optical ...

LIGHT-GUIDING ARRANGEMENT, IMAGING OPTICAL UNIT, HEAD MOUNTED DISPLAY AND METHOD FOR IMPROVING THE IMAGING QUALITY OF AN IMAGING OPTICAL UNIT

To improve the imaging quality of an imaging optical unit having a light-guiding arrangement for transferring at least one colour channel having a spectral maximum and a spectral bandwidth, the light-guiding arrangement reduces the spectral bandwidth of the at least one colour channel when the at least one colour channel is transferred. 119-. (canceled)20. A light-guiding arrangement , comprising:an optical waveguide that transfers at least one color channel having a spectral maximum and a spectral bandwidth; anda device for reducing the spectral bandwidth of the at least one color channel.21. The light-guiding arrangement of claim 20 , wherein the optical waveguide is configured to transfer a first color channel and a second color channel claim 20 , wherein each of the first and second color channels have a respective spectral maximum and a respective spectral bandwidth claim 20 , the positions of the spectral maxima of the color channels in the spectrum differ from one another claim 20 , and wherein the device for reducing the spectral bandwidth of the at least one color channel reduces the spectral bandwidth of each of the first and second color channels.22. The light-guiding arrangement of claim 20 , wherein the device for reducing the spectral bandwidth of the at least one color channel is integrated into the optical waveguide.23. The light-guiding arrangement of claim 20 , wherein the device for reducing the spectral bandwidth of the at least one color channel comprises a reducing element disposed upstream or downstream of the optical waveguide.24. The light-guiding arrangement of claim 20 , wherein the device for reducing the spectral bandwidth of the at least one color channel comprises at least one transmission filter.25. The light-guiding arrangement of claim 24 , wherein the at least one transmission filter comprises an optical waveguide entrance surface provided with transmission filter properties.26. The light-guiding arrangement of claim 20 , wherein ...

SYSTEM FOR PROVIDING ILLUMINATION OF THE EYE

A thin transparent layer can be integrated in a head mounted display device and disposed in front of the eye of a wearer. The thin transparent layer may be configured to output light such that light is directed onto the eye to create reflections therefrom that can be used, for example, for glint based tracking. The thin transparent layer can be configured to reduced obstructions in the field of the view of the user. 1. A head mounted display system configured to project light to an eye of a user to display augmented reality image content in a vision field of said user , said head-mounted display system comprising:a frame configured to be supported on a head of the user;an image projector configured to project images into the user's eye to display image content in the vision field of the user;a transparent layer supported on said frame and disposed at a location in front of the user's eye when the user wears said head-mounted display such that said transparent layer transmits light from an environment in front of the user to the user's eye to provide a view of the environment in front of the user;at least one elongate light guide having a first end and a second end, said first end disposed within said transparent layer, said first end of said elongate light guide having an output for emitting light such that said light is directed to said eye;at least one camera disposed to receive at least a portion of the light reflected from the eye to capture images using light reflected from the user's eye.21. The system of claim , , wherein said first end of said elongate light guide includes an angled reflector configured to couple light through said output of said elongate light guide.3. The system of claim 2 , wherein said angled reflector comprises a beveled surface at said first end of said elongate light guide.4. The system of claim 2 , wherein said angled reflector comprises a cleaved surface at said first end of said elongate light guide.5. The system of claim 2 , ...

Architecture to Illuminate a Display Panel

A system comprising an illumination system to direct light from one or more light sources to a limiting output pupil of a projection optomechanical system, a liquid crystal on silicon display panel (LCOS) to modulate the light from the projection optomechanical system and to direct the modulated light back toward the projection optomechanical system, and an in-coupler to a combiner waveguide to receive the modulated light from the LCOS, after it passes through the projection optomechanical system. The system in one embodiment is designed so that the light that passes through the projection optomechanical system from the illumination system lands on the LCOS within the limiting output pupil of the projection optomechanical system.

SPATIALLY MULTIPLEXED VOLUME BRAGG GRATINGS WITH VARIED REFRACTIVE INDEX MODULATIONS FOR WAVEGUIDE DISPLAY

A waveguide display includes a waveguide transparent to visible light, a first volume Bragg grating (VBG) on the waveguide and characterized by a first refractive index modulation, and a second reflection VBG on the waveguide and including a plurality of regions characterized by different respective refractive index modulations. The first reflection VBG is configured to diffract display light in a first wavelength range and a first field of view (FOV) range such that the display light in the first wavelength range and the first FOV range propagates in the waveguide through total internal reflection to the plurality of regions of the second reflection VBG. The plurality of regions of the second reflection VBG are configured to diffract the display light in different respective wavelength ranges within the first wavelength range and the first FOV range. 1. A waveguide display comprising:a waveguide transparent to visible light;a first reflection volume Bragg grating (VBG) on the waveguide and characterized by a first refractive index modulation; anda second reflection VBG on the waveguide and including a plurality of regions characterized by different respective refractive index modulations,wherein the first reflection VBG is configured to diffract display light in a first wavelength range and a first field of view (FOV) range such that the display light in the first wavelength range and the first FOV range propagates in the waveguide through total internal reflection to the plurality of regions of the second reflection VBG; andwherein the plurality of regions of the second reflection VBG are configured to diffract the display light in different respective wavelength ranges within the first wavelength range and the first FOV range.2. The waveguide display of claim 1 , wherein the first reflection VBG and the second reflection VBG have a same grating vector in a plane perpendicular to a surface normal direction of the waveguide.3. The waveguide display of claim 1 , ...

LASER PROJECTOR AND DIFFRACTIVE DISPLAY DEVICE

The invention relates to a laser projector for presenting an image on a waveguide plane. The projector comprises a laser source (A, B, C) capable of emitting a polychromatic light beam () or a plurality of narrow-wavelength light beams (A, B, C), and a guidance element (A, B) for directing light emitted by the light source to different pupils (A, B, C) of the waveguide plane, the different pupils being displaced with respect to each other in the waveguide plane. The invention also concerns a personal display device comprising such projector. 1. A laser projector for presenting an image on a waveguide plane , comprising:a laser source capable of emitting a plurality of narrow-wavelength light beams, anda guidance element for directing light emitted by the laser source to different pupils of the waveguide plane, the different pupils being displaced with respect to each other in said waveguide plane, the laser source and guidance element are adapted to produce at least three narrow-wavelength beams spatially separated on the waveguide plane into said different pupils, and', 'the laser source and guidance element are adapted direct said narrow-wavelength beams in different angles to said different pupils, whereby the laser source comprises at least three different laser sub-sources adapted to produce at least three initial beams corresponding to said at least three narrow-wavelength beams, the initial beams propagating at different angles onto the guidance element, and the guidance element is further adapted to reflect the initial beams at different angles towards said different pupils, respectively., 'wherein2. The projector according to claim 1 , wherein the sub-sources are laser sources at different locations and angles directed towards the guidance element.3. The projector according to claim 1 , wherein the laser source comprises three laser sources and a prismatic coupler adapted to produce said narrow-wavelength beams at different angles towards the guidance ...

BACKLIGHT MODULE AND DISPLAY HAVING THE SAME

A backlight module including a back plate, a light guide plate, a light-penetration layer, and a light source is provided. The light guide plate is disposed on the back plate and has a light incident surface and a light-emitting surface. The light-penetration layer is disposed on the light incident surface and adapted to absorb a light in a wavelength range. The light source is disposed on the back plate and faces the light incident surface, wherein the light source is adapted to provide a light. After the light passes through the light-penetration layer, the light enters the light guide plate from the light incident surface and is emitted from the light-emitting surface. In addition, a display having the backlight module is also provided. 1. A backlight module , comprising:a back plate;a light guide plate disposed on the back plate and having a light incident surface and a light-emitting surface;a light-penetration layer disposed on the light incident surface and adapted to absorb a light in a wavelength range; anda light source disposed on the back plate and facing the light incident surface, wherein the light source is adapted to provide a light, and after the light passes through the light-penetration layer, the light enters the light guide plate from the light incident surface and is emitted from the light-emitting surface.2. The backlight module of claim 1 , wherein the light-penetration layer comprises an anti-blue light substance claim 1 , and the anti-blue light substance comprises at least one of lutein and zeaxanthin.3. The backlight module of claim 1 , wherein a material of the light-penetration layer comprises an anti-blue light substance and a light-penetration structure claim 1 , and the light-penetration structure encapsulates the anti-blue light substance.4. The backlight module of claim 3 , wherein a material of the light-penetration structure comprises a heat-curing material or a light-curing material.5. The backlight module of claim 1 , further ...

Planar remote phosphor illumination apparatus

In various embodiments, an illumination apparatus features spatially separated input and output regions, a light source, a phosphor for light conversion, and an out-coupling structure.

NVIS COMPATIBLE BACKLIGHT DEVICE AND ELECTRONIC DISPLAY USING THE SAME

A backlight assembly includes a substantially planar light guide defining an upper surface, a lower surface, and a side surface. A first plurality of LEDs is positioned below the lower surface of the light guide and oriented to direct the light emitted therefrom into the lower surface. A NVIS filter is placed adjacent to the side surface and a second plurality of LEDs is positioned near the side surface. A separating element extends between the first and second plurality of LEDs. A directing element extends between the second plurality of LEDs and the NVIS filter to direct the emitted light from the second plurality of LEDs through the NVIS filter and into the light guide. 1. A backlight assembly comprising:a substantially planar light guide defining an upper surface, a lower surface, and a side surface;a first plurality of LEDs positioned below the lower surface of the light guide and oriented to direct light emitted from the first plurality of LEDs into the lower surface;a NVIS filter placed adjacent to the side surface;a second plurality of LEDs positioned near the side surface;a separating element extending between the first plurality of LEDs and the second plurality of LEDs; anda directing element extending between the second plurality of LEDs and the NVIS filter to direct light emitted from the second plurality of LEDs through the NVIS filter and into the light guide.2. The backlight assembly of wherein:said directing element comprises a curved, reflective surface.3. The backlight assembly of further comprising:a second NVIS filter placed adjacent to a second side surface of the substantially planar light guide, wherein said second side surface is positioned opposite the side surface;a third plurality of LEDs positioned near the second side surface;a second separating element extending between the third plurality of LEDs and the first plurality of LEDs; anda second directing element extending between the third plurality of LEDs and the second NVIS filter to ...

Laser-Pumped Phosphor Backlight and Methods

This disclosure provides systems, methods and apparatus for a laser-pumped phosphor backlight for display devices. In one aspect, a display includes a laser backlight configured to emit light, a plurality of phosphors that emit light at a respective wavelength when stimulated by light emitted by the laser backlight, and a waveguide including a diffraction grating positioned between the laser backlight and the plurality of phosphors. In some implementations, the diffraction grating may be configured to direct the light emitted by the laser backlight at a different intensity for each of the plurality of phosphors. For example, the diffraction grating may direct the light at different intensities for each of the plurality of phosphors by generating a diffraction pattern such that the light emitted by the laser backlight is distributed at different relative intensities for each of the plurality of phosphors. 1. A display comprising:a laser backlight configured to emit light;a plurality of phosphors, wherein each phosphor emits light at a respective wavelength when stimulated by light emitted by the laser backlight; anda waveguide including a diffraction grating positioned between the laser backlight and the plurality of phosphors, wherein the diffraction grating is configured to direct the light emitted by the laser backlight towards the plurality of phosphors.2. The display of claim 1 , wherein the diffraction grating is configured to direct the light emitted by the laser backlight at a different intensity for each of the plurality of phosphors.3. The display of claim 2 , wherein the diffraction grating is configured to direct the light emitted by the laser backlight at the different intensity for each of the plurality of phosphors by generating a diffraction pattern such that the light emitted by the laser backlight is distributed at different relative intensities for each of the plurality of phosphors4. The display of claim 2 , wherein the plurality of phosphors ...

Display device

A display device comprising: a light source; a wavelength conversion member to convert a wavelength of light generated from the light source and a light guide member to guide the light converted by the wavelength conversion member, wherein the wavelength conversion member comprises: a first surface facing the light source; a second surface facing the light guide member; a top surface extending from the first surface to the second surface; and a bottom surface facing the top surface, wherein the wavelength conversion member includes a tube, the tube receives, an air layer, a matrix therein and a plurality of quantum dots in the matrix, wherein the air layer is formed between one end of the tube and the matrix.

LIGHT SOURCE COMPONENTS AND BACKLIGHT MODULES

A light source component includes a substrate, dot light sources being spaced apart on the substrate, two supports respectively fixed on two ends of the substrate, and a QD tube. The two supports are arranged close to the dot light sources. The QD tube is fixed between the supports. In addition, the backlight module includes the light source component is disclosed. In view of the above, the QD tubes are fixed between the two supports made by buffering materials, which prevents the QD tube from being damages due to crash or shock so as to enhance the product reliability. In addition, the prism structure or the attached prism film on the lateral side of the QD tube may enhance the brightness of the light beams entering the light guiding plate. 1. A light source component , comprising:a substrate, dot light sources being spaced apart on the substrate, two supports respectively fixed on two ends of the substrate, and a QD tube, the two supports being arranged close to the dot light sources, each of the supports comprising a base, a first arm and a second arm extending upward from two ends of the base, a first hook extending from the first arm toward the second arm, and a second hook extending from the second arm to the first arm, wherein the base, the first arm, the second arm, the first hook, and the second hook cooperatively defining a receiving chamber for receiving the QD tube.2. The light source component as claimed in claim 1 , wherein when the QD tube is fixed between the supports claim 1 , a central axis of the QD tube is parallel to a line encompassing all of the dot light sources.3. The light source component as claimed in claim 1 , wherein the supports are made by rubber claim 1 , plastic claim 1 , or metallic sheets.4. The light source component as claimed in claim 1 , wherein the QD tube comprises a glass tube and QDs within the glass tube.5. The light source component as claimed in claim 4 , wherein a lateral surface of the glass tube facing away from the ...

METHOD TO ENHANCE PHOSPHOR ROBUSTNESS AND DISPERSABILITY AND RESULTING PHOSPHORS

Briefly, in one aspect, the present invention relates to processes for producing a stabilized Mn doped phosphor in solid form and a composition containing such doped phosphor. Such process may include combining a) a solution comprising at least one substance selected from the group consisting of: KHPO, an aluminum phosphate, oxalic acid, phosphoric acid, a surfactant, a chelating agent, or a combination thereof, with b) a Mn doped phosphor of formula I in solid form, where formula I may be: A[MF]:Mn. The process can further include isolating the stabilized Mn doped phosphor in solid form. In formula I, A may be Li, Na, K, Rb, Cs, or a combination thereof. In formula I, M may be Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or a combination thereof. In formula I, x is the absolute value of the charge of the [MF] ion and y is 5, 6 or 7.

LIGHT SOURCE, AND BACK LIGHT UNIT AND LIQUID CRYSTAL DISPLAY INCLUDING THE LIGHT SOURCE

A light source includes a light emitting element which emits light, and a light conversion layer which converts the light emitted from the light emitting element into white light and emits the white light, where the light conversion layer includes a resin and a quantum dot material mixed with the resin, and a red apex of a color region of the white light is positioned in a region of 0.65 Подробнее