Abstract: The invention relates to high efficiency diffusion lighting coverings useful in LED lighting applications. The diffusing lighting coverings are made of organic diffusing particles homogeneously dispersed in a transparent polymer matrix. The primary organic diffusing particles are refractive index mis-matched to the matrix polymer. The refractive index contrast between the polymer matrix and diffusion particles, and particle size are selected to provide a high efficiency (minimized particle loading). The high efficiency diffusion coverings provides excellent light diffusion, high hiding properties and high light transmission. The secondary diffusion particles may optionally be added to further improve selected target properties of the covering. Nano-sized ZnO inorganic particles may also function as diffusion particles and optical brighteners as well UV stabilizers.

Abstract: A display apparatus includes a liquid crystal panel, a light source configured to provide light to the liquid crystal panel, and an optical member disposed between the liquid crystal panel and the light source. The optical member includes a diffuser sheet that is configured to diffuse the light from the light source, and a deformation preventing layer including a first material having a lower expansion or contraction rate than the diffuser sheet.

Abstract: An illuminating display window has a window pane and a graphic element including fluorescent material. The graphic element has a major surface facing forward and a perimeter surface extending transverse to the major surface. An electromagnetic radiation source is configured to emit electromagnetic radiation to the perimeter surface of the graphic element. The radiation includes electromagnetic radiation having a wavelength in a non-visible spectrum. The graphic element fluoresces in response to the non-visible radiation to transmit visible light to an observer in front of the window pane. To form the graphic element, fluorescent ink can be deposited on a panel in a predefined pattern or a fluorescent panel could be shaped to have a predefined shape.

Abstract: There are provided a light emitting unit using a wavelength conversion member which may be put to practical use, and a display and a lighting apparatus which include the light emitting unit. The light emitting unit includes: a light source; an optical part including a light incident surface, the light incident surface facing the light source; a wavelength conversion member provided between the light source and the light incident surface; and a holding member holding the wavelength conversion member at a position between the light source and the light incident surface of the optical part.

Abstract: In one aspect, a new light fixture intended to replace an older light fixture includes a light source configured to emit light, a driver configured to control operation of the light source and a body housing the light source and the driver. The body has a back side with two opposing sidewalls angled at least 35 degrees. Stability spacer clips are configured to attach to each corner of the light fixture to help adapt the light fixture to an existing frame in a ceiling including swing frames, T-bar frames and so forth.

Abstract: A mini light emitting diode (LED) backlight panel is provided, which includes a plurality of backlight sub-panels in a docking way. A light-filling region is disposed between the arbitrary adjacent two backlight sub-panels. Fluorescent powder or quantum dots are filled in the light-filling region. The mini LED backlight panel emits light to excite material of the light-filling region to emit light. Secondly, adopting design solutions of large and small light emitting angles in mixed arrangement on different heights of the light emitting surfaces in the mini LED backlight panel, improving brightness on the splicing position, thereby improving quality of light emitted from the mini LED backlight panel, and meanwhile is advantageous for an ultra-thin design of the backlight module.

Abstract: Systems and methods for hermetically sealed quantum dots that may be positioned directly on top of the LED, so that a separate film is not needed to incorporate the quantum dots into a light, display, or other LED-based device. An enclosed quantum dot package can be incorporated directly on top of an LED die and packaged in the same packaging as the LED itself. Alternatively, the LED die may be encapsulated in the LED package, and the enclosed quantum dot package may be placed on top of the encapsulated LED. Alternatively, the enclosed quantum dot package may be separate from the encapsulated LED, e.g., included in a device as a separate layer from the LED package(s).

Abstract: According to an aspect of this disclosure, a lighting system comprises at least first and second luminaires wherein each luminaire comprises a housing, an optical waveguide suspended from the associated housing, and one or more LEDs disposed adjacent the optical waveguide. Further in accordance with this aspect, the system comprises circuitry disposed within the housing of the first luminaire wherein the circuitry comprises LED driving circuitry and power circuitry, the power circuitry provides power to the first luminaire and at least a second luminaire, and the second luminaire is modular.

Abstract: In one aspect, a light fixture includes a light source configured to emit light, a driver configured to control operation of the light source and a body housing the light source and the driver. The body is rectangular and configured in length and width so as to slide into a prismatic lens frame of an existing light fixture installed in a ceiling, fill in the frame and be held in place by the frame, where the frame is configured to hold a translucent prismatic lens and close on the existing light fixture. The body of the light fixture is also configured to fit between a body of the existing light fixture and the closed frame. The body is configured in thickness along the perimeter such that the perimeter of the body is able to slide into, fill and be held by the frame.

Abstract: A display device includes an inorganic light guide plate; a lower chassis includes a bottom portion overlapping the light guide plate, a first sidewall facing a first side surface of the light guide plate, and a second sidewall extending from the bottom portion and facing a second, side surface of the guide plate; a light source on the first sidewall and facing the first side surface; a display panel structure on the light guide plate and coupled to the lower chassis via a first panel coupling member; at least a first buffer member between the second sidewall and the second side surface; and a first reflective member between the first buffer member and the second side surface.

Abstract: To provide a light guide member which has less components than conventional ones and has stable wavelength conversion efficiency; and a light source unit using the light guide member. A light guide member includes: a light guide plate; a receiving space formed in the light guide plate to face a light entrance plane; and a wavelength converting material placed in the receiving space. With the use of the light guide member, the number of components can be reduced and stable wavelength conversion efficiency can be achieved. Further, the production process can be facilitated and the production cost can be reduced.

Abstract: Polycarbonate compositions having good flame retardancy and high light transmittance are achieved using the combination of a polycarbonate, a charring salt flame retardant, and a low molecular weight silicone compound. Light diffusing compositions are achieved using a particulate light diffusing agent. The compositions preferably meet or exceed one or more (and most preferably all) of the following flame retardancy standards: (i) UL-94 V-0 (t=1 mm); (ii) UL-94 5VA (t=2.5 mm); (iii) UL-94 5VB (t=2.5 mm).

Abstract: A luminaire includes an optical waveguide having a first surface and a second surface opposite the first surface, and a light source associated with the optical waveguide. At least about 80% of light produced by the light source is directed by the waveguide into an illumination distribution emitted from the first surface of the optical waveguide.

Abstract: A backlight unit suitable for use in illuminating a liquid crystal display panel of a display device. The backlight unit comprises a light guide plate, the light guide plate comprising a glass substrate with at least one edge, an intermediate waveguide physically and optically coupled to the at least one edge along a length of the edge, and a light source optically coupled to the intermediate waveguide.

Abstract: The present invention provides a light bar and a backlight module. The light bar comprises a circuit board, a plurality of light sources, a quantum tube and a first tape, and the circuit board is employed to generate a control signal, and the light sources are located on the circuit board and electrically connected to the circuit board, and the light sources generate a first light under control of the control signal, and the first light emitted from the light sources exits through an illuminating surface of the light sources, and the quantum tube is located adjacent to the illuminating surface of the light sources and the quantum tube is fixed and connected with the circuit board with the first tape, and the quantum tube is employed to convert the first light emitted from the light sources into a second light.

Abstract: A multilayered illuminated laminate system including a light source positioned proximate to an edge of a light panel that includes a series of reflective paint in the shape of diamonds of increasing size is provided. The system further includes a diffuser sheet of sufficient opacity that it obscures the diamond pattern on the bottom surface of the light panel and a reinforced panel formed from fiberglass that bestows the system with scratch, abrasion, impact, and chemical resistance to meet or exceed current regulatory requirements. The light source is positioned within a clamp mount that contains the light panel, diffuser, and reinforced panel in frictional engagement without the need for an adhesive. A graphic can be positioned between the diffuser sheet and the reinforced panel to increase the aesthetic appearance of the system exterior surface, as well as moderate the intensity of the light it emits.

Abstract: A current-generated photo-luminescent hybrid sign is provided that includes one or more light emitting elements within a channel in the frame to evenly distribute light, while at the same time energizing a photo-luminescent glow material in case of power outage. A method of use of the sign is also provided.

Abstract: A light source device which includes a light source, a diffusion member configured to diffuse light from the light source, a reflection sheet configured to reflect the light from the light source to the diffusion member, a storage housing in which the diffusion member and the reflection sheet are stored to face each other, and positioning parts configured to position the diffusion member and the reflection sheet in the storage housing is provided. And the reflection sheet is provided with convex parts in one edge part thereof at positions corresponding, in a facing direction, to notches of the diffusion member which correspond to the positioning parts, such that light reflectance in the vicinity of the notches of the diffusion member is increased.

Abstract: The present invention relates to a portable electronic device including a backlight module having a first light output surface toward a foreside and a second light output surface opposite to the first light output surface and toward a rear side, and providing a first surface light source and a second surface light source through the first light output surface and the second light output surface respectively; a lightening unit configured in proximity to the first light output surface and lightened by receiving the first surface light source; and a lightening pattern layer configured in proximity to the second light output surface, receiving the second surface light source and including a mask part and a light-transmittable part formed with a mark pattern, wherein the second surface light source is masked by the mask part and passes through the light-transmittable part whereby the mark pattern is accordingly lightened and defined.

Abstract: An edge-lit waveguide and macro optic hybrid structure includes a waveguide segment having a light receiving surface and a light emitting surface. The light receiving surface and the light emitting surface are on opposite sides of the waveguide segment. The edge-lit waveguide and macro optic hybrid structure also includes a macro optic segment integrally formed with the waveguide segment. A light emitting surface of the macro optic segment extends out beyond the waveguide segment on a side of the waveguide segment.

Abstract: A light-emitting diode (LED) airfield guidance sign is disclosed herein. The sign can include a waveguide having a first face and a first fastening mechanism disposed on a first outer perimeter of the waveguide adjacent to the first face. The sign can also include a front panel coupled to the first outer perimeter adjacent to the first face of the waveguide. The sign can further include at least one first LED array disposed adjacent to an edge of a plurality of edges of the waveguide, where the edge of the waveguide is substantially orthogonal to the first face of the waveguide. The sign can also include a pair of side frame supports that secures two opposing edges of the plurality of edges of the waveguide and the front panel. The sign can further include a power source that provides power to the at least one first LED array.

Abstract: The present invention relates to a light guide film for a backlight unit of an ultrathin liquid crystal display device, the light guide film allowing rays of light entering from an end face to exit from a front face side, and including a hard layer (17, 18) having a pencil hardness of at least HB, the hard layer (17, 18) containing a polycarbonate as a principal component, and at least one face of the hard layer being exposed, and the entire light guide film (12) having an average thickness of no less than 100 ?m and no greater than 600 ?m.

Abstract: The invention provides an illumination device comprising a waveguide having a first face, a second face, and a waveguide edge. The device further comprises a LED light source, wherein the LED light source is arranged to couple at least part of the light source light into the waveguide element. The device also comprises a first transmissive reflector, arranged at the first face side, and a second transmissive reflector, arranged at the second face side. The LED light source, the waveguide, the first transmissive reflector, and the second transmissive reflector, are arranged to generate the first and second light in a direction away from the first face and in a direction away from the second face, respectively. Such an illumination device may allow lighting of a room, for instance via the ceiling with uplight, and lighting of a specific area in the room with downlight.

Abstract: An apparatus and method for providing a light source in the form of a surface are disclosed. In one embodiment, the apparatus comprises a first sheet including a light diffuser, and a light source placed along an edge of the first sheet. The first sheet diffuses light generated by the light source, wherein the distribution of light diffusing particles is varied throughout the light diffuser to emanate a predetermined light pattern.

Abstract: Illumination devices and methods of making same are disclosed. In one embodiment, an illumination apparatus includes a light source, a light guide having a planar first surface, a first end and a second end, and a length therebetween, the light guide positioned to receive light from the light source into the light guide first end, and the light guide configured such that light from the light source provided into the first end of the light guide propagates towards the second end, and a plurality of light turning features that are configured to reflect light propagating towards the second end of the light guide out of the planar first surface of the light guide, each light turning feature having a turning surface and an interferometric stack formed on the turning surface.

Abstract: A planar ion-exchanged glass sheet for out-of-plane light beam coupling includes a first surface, a ion-exchanged first glass region adjacent and parallel to the first surface, a core glass region adjacent and parallel to the first glass region, a ion-exchanged second glass region adjacent and parallel to the core glass region, and a second surface adjacent and parallel to the second glass region. One edge of the glass sheet has an angled end face that is inclined to the plane extends across a thickness of at least one of the glass regions. Methods of making the planar ion-exchanged glass sheet, coupling an out-of-plane light beam into a plane using the planar ion-exchanged glass sheet, and scattering the coupled light to illuminate at least select regions of an exposed surface of the glass sheet are also disclosed.

Abstract: The invention provides a luminescent optical device (10) having an optical waveguide (200). The luminescent optical device (10) further has a photo-luminescent structure (100) on or inside the optical waveguide (200). The photo-luminescent structure (100) comprises a plurality of photo-luminescent domains (110) containing photo-luminescent material (120). The photo-luminescent material (120) is capable of emitting emission light upon excitation by excitation light. The photo-luminescent domains (110) are arranged to emit, upon excitation by excitation light, at least part of the emission light into the optical waveguide layer (200). The luminescent optical device (10) further may comprise a lens structure (300) on the optical waveguide (200).

Abstract: A light guide plate includes a first transparent base layer, an adhesive layer and a transparent composite layer. The adhesive layer is configured for bonding the transparent composite layer on the first transparent base layer. The transparent composite layer is located on the adhesive layer, and the transparent composite layer comprising a light emitting surface, the light emitting surface includes a plurality of microstructures.

Abstract: A display module includes a display panel configured to display an image and a backlight. The backlight includes a light guide panel configured to guide light to the display panel, a light source element configured to supply light to the light guide panel, and a reflection sheet disposed over the light guide panel, wherein a chromaticity compensation layer is formed in the backlight unit. The chromaticity compensation layer formed in the backlight reduces yellowing.

Abstract: A first light source system comprises a light guide with light deflecting particles. If its light emission function and concentration variation function (of the light deflecting particles) are known, then a similar second light source system with a desired light emission function can be designed using the following method. The concentration variation function of the second light source system is obtained by mutating the concentration variation function of the first light source system using the same mutating function that mutates the light emission function of the first light source system into the light emission function of the second light source system.

Abstract: Composite light guide plate includes a substrate, a first transparent layer, and a second transparent layer. The substrate includes an upper surface and an opposite lower surface. The substrate is made of polycarbonate, and a number of diffusion particles made of polymethyl methacrylate are embedded in the substrate. The first transparent layer is made of polystyrene formed on the upper surface. The second transparent layer made of polystyrene is formed on the lower surface.

Abstract: A sheetless backlight module and a light guide plate thereof are provided. The light guide plate includes a body and a plurality of light scattering units. The body has a bottom and a plurality of microstructures formed on the bottom and recessed in the body from the bottom. The pluralities of light scattering units are disposed in a plurality of spaces formed due to the plurality of microstructures recessed in the body. A manufacturing method of the light guide plate mentioned above includes forming the plurality of microstructures on the bottom of the body; preparing a fluid solution containing at least a diffusive reflective material; distributing the fluid solution on the bottom; driving the fluid solution to flow into the microstructures; removing the part of the fluid solution outside the microstructures; and solidifying the fluid solution to form the plurality of light scattering units.

Abstract: A uniform reflective light-guide apparatus can accompany an optional edge light source and includes a light-guiding layer, a reflective layer and a light-exiting surface. The light-guiding layer further has a lateral side to define a light-introducing surface for allowing entrance of lights from the edge light source. The reflective layer is to reflect incident lights back to the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights in the light-guiding layer to leave the light-guide apparatus. The reflective layer and the light-guiding layer are manufactured integrally by a co-extrusion process so as to avoid possible existence of an air spacing between the reflective layer and the light-guiding layer.

Abstract: An apparatus and method of manufacturing sheets with varying concentrations of particles are described. In one embodiment, a method comprises manufacturing a first sheet having a varying concentration of particles. A second sheet having a second concentration of particles and a first shape with varying thickness is provided. A third sheet having a third concentration of particles and a second shape with varying thickness is provided. The second sheet and the third sheet are merged to generate the first sheet.

Abstract: Lightguides are disclosed. More particularly, lightguides that include a lightguiding layer and a light extracting layer having a structured surface are disclosed. The light guiding layer is optically coupled to a first set of structures of the structured surface at given locations, and is not optically coupled to a second set of structures at given locations, thereby producing total internal reflection at the second locations. The selective optical coupling may be achieved by a number of different contemplated means as discussed herein. The lightguides allow for distribution of light along with redirection towards an image viewer without a number of commonly required optical elements in backlights.

Abstract: A backlight module includes a light guide board, at least one light emitting unit, a plurality of first glues, and a first reflection sheet. The light guide board has a light entrance surface, a light exit surface, and at least one reflection surface. The reflection surface is connected to the light entrance surface and the light exit surface respectively. The light emitting unit is disposed at the light entrance surface of the light guide board. The plurality of first glues is alternatively disposed on the reflection surface in a from-sparse-to-dense manner. The first reflection sheet is disposed on the plurality of first glues such that the first reflection sheet can be fixed onto the reflection surface.

Abstract: A planar ion-exchanged glass sheet for out-of-plane light beam coupling includes a first surface, a ion-exchanged first glass region adjacent and parallel to the first surface, a core glass region adjacent and parallel to the first glass region, a ion-exchanged second glass region adjacent and parallel to the core glass region, and a second surface adjacent and parallel to the second glass region. One edge of the glass sheet has an angled end face that is inclined to the plane extends across a thickness of at least one of the glass regions. Methods of making the planar ion-exchanged glass sheet, coupling an out-of-plane light beam into a plane using the planar ion-exchanged glass sheet, and scattering the coupled light to illuminate at least select regions of an exposed surface of the glass sheet are also disclosed.

Abstract: A polycarbonate resin composition for light guides which has excellent light guiding properties and flame retardancy, a light guide and a surface light source body. The light guide is formed from a resin composition which comprises (A) 100 parts by weight of a polycarbonate resin (component A) and (B) 0.001 to 0.1 part by weight of a metal salt-based compound (component B).

Abstract: Techniques are disclosed for extracting light from within a lightguide by providing therein a plurality of internal light extraction features. A broad range of internal light extraction feature configurations (e.g., geometries/shapes, materials, refractive index changes, etc.) can be provided, and a variety of processes/techniques (e.g., 3-D printing, laser cutting/etching, injection molding, embossment, layer stacking, extrusion, etc.) can be used to do so. The features can be configured to achieve any desired set of photometric performance criteria (e.g., single/double-sided emission, optical efficiency, energy efficiency, spatial/angular luminance distribution, intensity gradients, etc.) for a given lightguide-based fixture/device. In some cases, internal and surficial light extraction features can be used together to extract light. Also, a wide variety of lighting fixtures/devices (e.g., panels, bulbs, tubes, rings, containers, three-dimensional structures/sculptures, multi-layered, multi-sectioned, etc.

Abstract: Light guide structures having a transparent member containing at least one red fluorescent transparent substance, at least one green fluorescent transparent substance, and at least one blue fluorescent transparent substance are disclosed.

Abstract: Windows, or other types of transparent materials, may be constructed to passively allow light from alternate sources to pass therethrough, while also being able to actively produce artificial light for providing illumination from one side of the window by means of an incorporated optical waveguide that accepts light from an edge of the window and disperses it from only one side of the window.

Abstract: A method for providing, on a carrier (40), an insulative spacer layer (26) which is patterned such that a cavity (27) is formed which enables connection of an optical semiconductor element (41) to the intended conductor structure (22) when placed inside the cavity (27). The cavity (27) is formed such that it, through its shape, extension and/or depth, accurately defines a location of an optical element (45; 61) in relation to the optical semiconductor element (41). Through the provision of such a patterned insulative spacer layer, compact and cost-efficient optical semiconductor devices can be mass-produced based on such a carrier without the need for prolonged development or acquisition of new and expensive manufacturing equipment.

Abstract: A lighting assembly for liquid crystal alignment is disclosed. The lighting assembly includes a light guiding plate and a light source. The light guiding plate is made by quartz glass. The light guiding plate includes a light emitting surface, a light incident surface adjacent to the light emitting surface, and a bottom surface opposite to the light emitting surface. The light source faces toward the light incident surface of the light guiding plate. The light guiding plate contains a hydroxyl group in an amount less than or equal to 100 ppm. As the light source faces toward the light incident surface of the light guiding plate, the number of the light source may be reduced so that the light utilization rate is enhanced.

Abstract: A light guide plate with an adjustable illumination angle and an illumination device using the same are provided. The light guide plate has a first surface and a second surface opposite to the first surface. The second surface further has a plurality of deformable microstructures thereon. The deformable microstructures will be deformed when an external force is applied to the deformable microstructures. The illumination device has a light source and a light guide plate that is disposed next to the light source. A light beam emitted from the light source enters into the light guide plate and leaves the light guide plate via reflecting or refracting by the deformable microstructures. By applying a different external force to the light guide plate, the deformation of the deformable microstructures will be varied. Therefore, the illumination angle of the light beam could be changed according to the deformation of the deformable microstructures.

Abstract: A diffusion plate includes a base having a top surface and a bottom surface and a plurality of parallel convex ridges integrally formed on the top surface of the base while extending in one direction. Each convex ridge has a cross section shaped as a portion of an ellipse. The display apparatus includes a display panel, a light source and the diffusion plate.

Abstract: A display assembly including an integrally formed light pipe and perimeter chassis, and a display glass above the light pipe is provided. The display glass includes transmissive elements configured to form an image on the display glass. The light pipe can be utilized to provide back-lighting for the display glass. In one embodiment, the light pipe and the perimeter chassis can be formed using a co-molding process.

Abstract: A converging illuminant device has a flat illuminant, a reflective layer and an enhancement film. The reflective layer abuts the flat illuminant, is grille-shaped and has multiple longitudinal strips and multiple lateral strips. The enhancement film is securely connected with the reflective layer and has an emissive surface. The emissive surface has multiple free-form curved areas, multiple longitudinal lines and multiple lateral lines. The longitudinal lines respectively align with the longitudinal strips. The lateral lines respectively align with the lateral strips. Because the reflective layer is grille-shaped, light definitely passes through central positions of the free-form curved areas, angles of refraction of the light are small and the light can be effectively converged. Consequently, illuminant efficiency and central luminous intensity are increased.

Abstract: A backlight module includes a light guide plate and at least one light source. The light guide plate has a first light-emitting surface, a second light-emitting surface opposite the first light-emitting surface, and at least one side surface connected between the first light-emitting surface and the second light-emitting surface. The light guide plate has a first substance and a second substance surrounding the first substance, and the second substance is different to the first substance to form at least a first light reflecting/diffusing interface and a second light reflecting/diffusing interface. A light beam emitted by the light source is deflected by the first light reflecting/diffusing interface and output via the first light-emitting surface, and a light beam emitted by the light source is deflected by the second light reflecting/diffusing interface and output via the second light-emitting surface.

Abstract: A reflecting sheet of the invention is comprised of at least two, a surface layer portion and an inner layer portion, or more layers, and is characterized in that the surface layer portion contains at least a thermoplastic resin (C), the inner layer portion contains a thermoplastic resin (A), and at least one kind of thermoplastic resin (B) incompatible with the thermoplastic resin (A), reflected light intensity in a vertical direction has anisotropy by an incident direction when light is incident at an incident angle of 60 degrees with respect to the vertical direction of a plane of the reflecting sheet in the entire reflecting sheet including the surface layer portion and the inner layer portion, and that a ratio L1/L2, which is a ratio of reflected light intensity L1 in the vertical direction in an incident direction A1 where the reflected light intensity in the vertical direction is the highest to reflected light intensity L2 in the vertical direction in an incident direction A2 orthogonal to the incident

Abstract: An apparatus and method for extraction of light from a light conducting medium in a preferred emanation pattern are described. In one embodiment, the apparatus comprises a first light conducting sheet including aspherical particles, and a light source placed along the edge of the first sheet. The first sheet diffuses light generated by the light source such that light emanates in a predetermined light emanation pattern.