Abstract: A lamp for emitting light, comprising a transparent sheet-like lightguide, with at least one light receiving side, a light emission front surface and a back surface opposite the front surface. The lamp further comprises a plurality of light sources, positioned in an array and optically coupled to at least one light receiving side. The back surface of said lamp comprises a plurality of optical extraction structures, for example provided in parallel curved lines. Furthermore, the lamp is substantially free from light scattering structures in a light path of the light to be emitted.

Abstract: Disclosed are further improvements of AmbiLight Displaying Arrangement, a lighting or illumination system that has been introduced to enhance viewing experience. This is achieved by providing light sources (20) that create multiple colors next to at least one side of the screen (10) of the display device or arrangement, each of the multiple colors being 5 adapted to the video contents at a spatially corresponding region (50) of the screen (10). In one embodiment the lighting or illumination system can have an improved construction wherein a reflector (60) has a window section (65) enabling the light from the light sources (20) to be split into two. Half or more of the light is directed to the background (30) of the display device and half or less of the light is directed to the bezel diffuser (70), i.e. to the 10 front of the display device.

Abstract: A light guide plate includes a plurality of quantum dots on at least one of a surface of the light guide plate and inside the light guide plate, wherein the plurality of quantum dots emit light having a different wavelength than a light incident thereto.

Abstract: The present invention relates to color generation in an indoor or outdoor lighting device, and more particularly to a control method which provides spatially consistent color control of a lighting device designed for use in, e.g., spatially extended premises or environments containing obstacles, and thus including multiple light sensors to allow efficient control. Color consistency is achieved by an arrangement where light of one or more of the light sources impinges on more than one light sensor. If constructional detector features, such as filter characteristics, coincide, then these sensors should in principle, after the appropriate processing, report identical color points of the light source under consideration. Indeed, color is a path-independent property of light, and this is the basis for a mutual calibration scheme of the detectors according to the invention.

Abstract: A back window for a motor vehicle comprises a display element, wherein the display element comprises at least one light conductor panel. The light conductor panel comprises a first main surface, a second main surface and at least one marginal surface. The light conductor panel also comprises light-decoupling structures at least in a part region of a volume of the light conductor panel, wherein the light-decoupling structures are embodied as light-diffusing nano particles.

Abstract: An illumination module includes a plurality of Light Emitting Diodes (LEDs) and a light conversion sub-assembly mounted near but physically separated from the LEDs. The light conversion sub-assembly includes at least a portion that is a polytetrafluoroethylene (PTFE) material that also includes a wavelength converting material. Despite being less reflective than other materials that may be used in the light conversion sub-assembly, the PTFE material unexpectedly produces an increase in luminous output, compared to other more reflective materials, when the PTFE material includes a wavelength converting material.

Abstract: The present invention provides a backlight capable of suppressing loss of light from an invisible light source and a displaying/imaging apparatus using the same. The backlight includes: a light guide plate having a light emitting face and a rear face opposed to the light emitting face; a visible light source disposed on a side face of the light guide plate; an invisible light source disposed on a side face of the light guide plate; a first reflection film disposed on the rear face side of the light guide plate, reflecting light from the visible light source, and transmitting light from the invisible light source; and a second reflection film disposed on the rear face side of the light guide plate and reflecting light from at least the invisible light source out of the visible light source and the invisible light source.

Abstract: A radiation device is disclosed. The device includes a light cavity including a top surface, a bottom surface, and side walls. A light source array including at least one light source is formed on a first side wall. The device also includes a reflective coating formed on at least the bottom surface. The top surface allows light transmission and includes a light conversion layer.

Abstract: A light-emitting assembly includes a light guide plate (LGP), a first infrared light-emitting part, a second infrared light-emitting part and a visible light-emitting part. The LGP has printed circuit patterns formed on a lower surface thereof. The first infrared light-emitting part includes a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP and spaced apart by intervals having different sizes. The second infrared light-emitting part includes a plurality of second infrared LEDs disposed at a second side of the LGP and spaced apart by intervals having different sizes. The visible light-emitting part includes a plurality of visible LEDs disposed at a third side of the LGP and spaced apart by intervals having different sizes, so that infrared light and visible light that is emitted from the two different kinds of light sources may be uniformly provided to a touch screen panel.

Abstract: A back-light unit including a plurality of substrates, a plurality of light sources respectively disposed on the plurality of substrates and configured to emit light, and N (N?2) light guide plates respectively disposed adjacent to the plurality of light sources, each light guide plate including a light incidence part having a light incidence surface for receiving light emitted in a first direction from a corresponding light source, and a light emission part for emitting the received incident light in a second direction different than the first direction. Further, at least one of the light guide plates includes light-extracting surface patterns disposed on the light emission part, and the light-extracting surface patterns comprise a first region of light-extracting surface patterns having a higher pattern-density than a second region of light-extracting surface patterns next to the first region.

Abstract: An apparatus for providing a multicolored illuminator for displays is disclosed. In one embodiment, the apparatus comprises a first sheet comprising a plurality of columnar illuminators stacked side by side, and a plurality of colored light sources placed along an edge of the first sheet. The plurality of columnar illuminators diffuse light generated by the plurality of colored light sources. Each columnar illuminator has a light diffuser included within it at a concentration that is different at different locations.

Abstract: In one embodiment of this invention, a light fixture comprises a light source, a collimating element, an optical cavity and a multi-functional non-imaging optical component (MNOC) comprising an anisotropic light scattering film. In another embodiment of this invention, the MNOC further comprises a surface relief feature which redirects a portion of the incident light. The present invention provides a system and method of controlling the output of light from a light fixture. One or more volumetric anisotropic diffusing components are utilized to control both the photometric distribution and visual appearance of the light fixture. A high degree of optical control is obtained with durable components that can be easily customized to optimize optical performance in light fixtures designed as pendants, wall sconces, wallwashers, downlights, and tasklights. The luminance and color uniformity as well as the illuminance and color uniformity of illumination can be controlled and improved.

Abstract: A light-guiding module includes a casing, a light-guiding body, a light source, and a light-abating element. The casing has an accommodating space and a light-emerging surface. The light-guiding body is received in the accommodating space of the casing and has a light-entering surface and a light-emerging surface. The light-emerging surface is located to correspond to the light-emerging surface of the casing. The light source is located to correspond to the light-entering surface of the light-guiding body. The light-abating element is located to correspond to the light-emerging surface of the light-guiding body, and the light-abating element may be located close to the light source. The light-abating element may be provided at a position which the light-guiding body is close to the light source, thereby making the light emerging from the light-guiding body to become more uniform and thus overcoming the problem that the brightness of light is uneven.

Abstract: A backlight module includes a light guide plate, micro-structures, at least one light source, and a first prism sheet. The light guide plate includes a first surface, a second surface, and a light incident surface connecting the first surface and the second surface. The micro-structures are disposed on at least one of the first surface and the second surface. The light source is disposed beside the light incident surface and capable of emitting a light beam. The first prism sheet includes a first transparent substrate and first prism structures. The first surface is located between the second surface and the first transparent substrate. The first transparent substrate is disposed among the first surface and the first prism structures. Each first prism structure has a first vertex angle protruding away from the first transparent substrate, and the first vertex angle falls within a range of 67 degrees to 83 degrees.

Abstract: A color light guide panel, suitable for differentiating an incident light into multiple color lights is provided. The color light guide panel includes a substrate and a color light output structure. The substrate has multiple pixel regions, and the color light output structure is disposed in each of the pixel regions. The color light output structure includes a first nano-pattern, a second nano-pattern and a third nano-pattern. The incident light is scattered by the first nano-pattern for producing a first color light, scattered by the second nano-pattern for producing a second color light, and scattered by the third nano-pattern for producing a third color light. The color light guide panel can output uniform and high luminous first, second and third color light. Moreover, a liquid crystal display device having the above color light output structure is also provided.

Abstract: A light unit which includes a plurality of light-emitting diode (LED) light sources arranged in parallel, a light-guiding member arranged on said LED light sources, a light reflecting part for reflecting light from said LED light sources forward, a light diffusion part for outgoing light from the surface of said light-guiding member to outside, and an optical path changing part arranged above said light-diffusion part, wherein a side of said light-guiding member that faces said light diffusion part is flat.

Abstract: A light mixing system includes a transparent waveguide having a reflectorized edge, a light input edge and a light output edge opposite the reflectorized edge. The light input edge receives light of different colors from two or more light sources. The received light of different colors is totally internally reflected from opposite major surfaces of the waveguide. Formed inside the waveguide are a plurality of cavities bounded by walls substantially parallel to the edges and substantially orthogonal to the major surfaces of the waveguide. Interaction of the received light of different colors with one or more of the cavities and the reflectorized edge mixes the light of different colors before exiting the light output edge.

Abstract: Light emitting decorative panels using a light source at the edge thereof that may have a desired uniformity of light emission from a pattern thereon, and which are not subject to local shadows (shading) in a pattern part from patterns or pattern parts between the respective pattern or pattern part and the light source. The elimination of shading is achieved by the depressions of a given geometry disposed in an arc having a center at the light source, and sizes each depression or arc segment of a depression in being chosen accordance with 1), the distance of the respective depression or depression segment from the source of light, and 2), the number of depressions between the respective depression and the source of light, with a second order correction for the position of depressions between the respective depression and the source of light.

Abstract: Laser lit flat panel displays are disclosed including edge-lit and direct lit backlights. In certain embodiments, laser assemblies are selected to obtain bandwidth distributions to reduce speckle.

Abstract: A tandem type backlight comprises plural light-emitting units (11) including at least one point light source (5) and a light guide plate (7) for causing light from the at least one point light source to be diffused and surface-emitted. In each of the light-emitting units (11), a length X of a light guide area (9) is set so that an area, on a boundary surface between a light-emitting area (10) and the light guide area (9), of a cross-section of a light beam that is emitted from the at least one point light source (5) and is diffused in the light guide plate (7) is equal to or larger than an area of the boundary surface (interface). Moreover, a length X, in a length direction D1, of the light guide area is smaller than a length Y, in the length direction D1, of the light-emitting area.

Abstract: A lighting device includes a plurality of light-transmitting guide plates 1, 2, 3 laminated in at least three layers and a plurality of light emitting elements 4, 5, 6 arranged so as to oppose to respective lateral sides of the light-transmitting guide plates 1, 2, 3 to allow luminance flux in different color with respect to each light-transmitting guide plate to be incident on the corresponding light-transmitting guide plate. Each of the light-transmitting guide plates 1, 2, 3 has a plurality of reflecting surfaces 7, 8, 9 formed on the backside of the plate to change a propagation direction of the luminance flux propagated in the each light-transmitting guide plate, allowing the luminance flux, of which propagation direction has been changed by the reflecting surfaces 7, 8, 9, to be emitted from the front side of the each light-transmitting guide plates.

Abstract: There is provided an illumination device equipped with a light guide plate, a light source unit having a plurality of point like light sources for supplying light to the light guide plate and a light source holding member for holding the point like light sources, the light source unit being disposed to oppose an edge face of the light guide plate, and a housing for holding the light guide plate and the light source unit. The light source unit is constituted so as to be inserted in and extracted from the housing by a slide mechanism that can be slid along the edge face of the light guide plate, and the light source unit is equipped with a spacer for assuring a gap between the edge face of the light guide plate and the light sources at a slide insertion side end of the light source unit with respect to the housing when the light source unit is slidingly inserted in the housing.

Abstract: A lamp for emitting light, comprising a transparent sheet-like lightguide, with at least one light receiving side, a light emission front surface and a back surface opposite the front surface. The lamp further comprises a plurality of light sources, positioned in an array and optically coupled to at least one light receiving side. The back surface of said lamp comprises a plurality of optical extraction structures, for example provided in parallel curved lines. Furthermore, the lamp is substantially free from light scattering structures in a light path of the light to be emitted.

Abstract: An apparatus and method for coupling light into a light source in the form of a surface are disclosed. According to one embodiment, the apparatus comprises a linear light source including a light diffuser. The apparatus also has a sheet having a first edge with the linear light source placed along the first edge. The linear light source diffuses light such that the light emanates in a predetermined pattern along the first edge of the sheet.

Abstract: An enclosure is provided for housing pixels of a graphical display. The enclosure provides one or more laminar structures at a first surface of the enclosure. The laminar structure may be made up of a first material of a predetermined thickness at the first surface and a second material in sufficiently close proximity with the first material to allow heat conduction. The second material preferably has a thermal conductivity greater than the thermal conductivity of the first material. Thermal conductors are provided in or attached to the second material in the laminar structure to conduct heat to a second surface of the enclosure. The first material may be, for example, a polymer. The second material may be, for example, a heat wick, a metal mesh or heat pipes. The second surface may be cooled by an air stream, which may also reduce humidity at the surface.

Abstract: A light-guiding member is provided with two light source groups on its both terminals and the light-guiding board comprises two light mixing areas which have a cross section form which is symmetry for its center line, and a light outputting area between these. The light mixing areas function as an area in which the lights from each adjacent light source group are mixed and at the same time function as an area to output the mixed lights from each remote light source group. The light outputting area functions as an area to pass a part of the mixed lights from the two light source groups and at the same time functions as an area to output the rest.

Abstract: A backlight is provided for illuminating an at least partially transmissive display. The backlight includes a light source. A light guide receives the light from an edge surface and guides the light by total internal reflection. The light is extracted from the lightguide using sub-wavelength extraction features designed on the basis of two interleaved grating structures. The emitted light, using this arrangement has a high level of polarization.

Abstract: The illumination device is provided with a plurality of light guide bodies, the bottom face of which is given light reflection/scattering treatment, light sources individually connected to the end portions of a plurality of the light guide bodies to radiate the bottom faces of a plurality of the light guide bodies, and a control unit for changing the intensity of light made incident from the light sources to a plurality of the light guide bodies. A plurality of the light guide bodies are laminated so as to be at least partially overlapped at the respective light emitting regions of the light guide bodies, and the control unit allows the intensity of light made incident from the light sources to the light guide bodies to change with the lapse of time.

Abstract: A light guide module and a display device with the light guide module are disclosed. The light guide module includes a rigid light guide film and a soft light guide film. The soft light guide film is pasted on the rigid light guide film. The soft light guide film has a first surface, and a pattern is formed on the first surface. The area of the first surface without the pattern is pasted on the rigid light guide film. The pattern is positioned between the soft light guide film and the rigid light guide film. The display device includes at least one light guide module and a light source located at one side of the light guide module. When the light source is on, the pattern is lit and visible.

Abstract: A lighting device includes a plurality of light-transmitting guide plates 1, 2, 3 laminated in at least three layers and a plurality of light emitting elements 4, 5, 6 arranged so as to oppose to respective lateral sides of the light-transmitting guide plates 1, 2, 3 to allow luminance flux in different color with respect to each light-transmitting guide plate to be incident on the corresponding light-transmitting guide plate. Each of the light-transmitting guide plates 1, 2, 3 has a plurality of reflecting surfaces 7, 8, 9 formed on the backside of the plate to change a propagation direction of the luminance flux propagated in the each light-transmitting guide plate, allowing the luminance flux, of which propagation direction has been changed by the reflecting surfaces 7, 8, 9, to be emitted from the front side of the each light-transmitting guide plates.

Abstract: An apparatus for providing a multicolored illuminator for displays is disclosed. In one embodiment, the apparatus comprises a first sheet comprising a plurality of columnar illuminators stacked side by side, and a plurality of colored light sources placed along an edge of the first sheet. The plurality of columnar illuminators diffuse light generated by the plurality of colored light sources. The light emanates in a predetermined pattern.

Abstract: A lighting device is provided for projecting a pixelated lighting pattern to be viewed onto a surface facing said device is provided. The device comprises a plurality of independently controllable lighting units (1), each lighting unit comprising at least one light-emitting diode (3, 4, 5, 6), and a controller (7) for controlling the emission of light from said lighting units. A device according to the present invention allows ambient illumination of a surface and projection of images and patterns.

Abstract: A directly illuminated display unit has a display panel and one or more light sources disposed behind the display panel. A diffuser is disposed between the one or more light sources and the display panel, and a light diverting layer is disposed between the one or more light sources and the diffuser. The light diverting layer has a first light-diverting surface facing the one or more light sources and a second light diverting surface facing the display panel. The light diverting layer diverts light passing from the one or more light sources to the diffuser, thus improving the uniformity of the light in the display unit.

Abstract: Methods of controlling a backlight unit including a plurality of solid state light emitting devices include receiving a request to set a color point of the backlight unit at a requested color point, and determining if the requested color point is within an acceptable range. In response to the requested color point being outside the acceptable range, a modified color point is selected in response to the requested color point, and a color point of the backlight unit is set at the modified color point. Corresponding solid state lighting units are also disclosed.

Abstract: An illuminating device has a light pipe that is elongate in shape and has a light-emitting face running in the direction of a longitudinal axis. A light-reflecting face is disposed opposite the light-emitting face, and the light-reflecting face has a plurality of prismatic cuts. Each prismatic cut includes a front face oriented at an angle B from a normal axis, the normal axis being 90 degrees from the longitudinal axis of the light pipe. The angle B is in the range of about 5 degrees to about 45 degrees and is such that it allows light to refract through at least one prismatic cut and then be internally reflected.

Abstract: A surface light source device using light emitting diodes, the device including: a housing having a top opening to emit light; a light emitting diode board disposed on an inner bottom surface of the housing, the board on which a plurality of light emitting diodes are arranged; and a color conversion laminate formed by depositing a plurality of phosphor-mixed resin layers containing phosphors, the layers disposed at a top of the opening of the housing and providing light having different wavelengths.

Abstract: Disclosed are a light emitting device and a display device using the same. The light emitting device includes a first electrode formed on a top surface of a substrate and a second electrode formed on a top surface of the light emitting layer. The light emitting layer auxiliary light emitting particles that convert the path of light, so that brightness of the light emitting device and the display device is improved.

Abstract: A backlight for a color liquid crystal display apparatus includes a first light-guide plate; a first incidence part for receiving light of a first primary color in a first area on a first lateral surface of the first light-guide plate; a second incidence part for receiving light of a second primary color light in a second area on a second lateral surface that is opposite to the first lateral surface of the first light-guide plate; and a third incidence part for receiving light of a third primary color in a third area on a rear surface of the first light-guide plate. The number of superposition steps is thereby reduced, light-guide plates can easily be superposed onto an LCD panel with high accuracy, and a lightweight and inexpensive backlight for a color liquid crystal display apparatus can be obtained.

Abstract: A point light source includes a body, a light-emitting unit and a fluorescent unit. The body includes a bottom portion and a protrusion portion protruded from the bottom portion. The light-emitting unit includes a light-emitting chip disposed at the protrusion to have an inclined-angle with respect to the bottom portion. The fluorescent unit covers the bottom portion, the protrusion portion and the light-emitting chip. The point light source has an emitting-angle of about 180 degrees and luminance difference between a bright-portion and a dark-portion is decreased to enhance display quality of a display device.

Abstract: Light emitting panel assembly includes a panel member, at least one light source and a light transition member located between the light source and the light input surface of the panel member. On or in the light transition member are elements that effect a desired colored or white light output distribution from a light output area of the panel member. The light transition member may comprise a coating or surface treatment on the light input surface that effects the color of light emitted by the light output area. Alternatively a transparent sheet, plate or film attached to or positioned against the light input surface may have a coating, surface treatment or deformities that effect the color of light passing through the sheet, plate or film to obtain a desired colored or white light output distribution from the light output area.

Abstract: In a liquid crystal display device using LEDs emitting a plurality of colors as the light sources, diffusion materials are dispersed in a light guide plate. The light guide plate is used to guide and mix the plurality of colors with one another. The diffusion materials are made of a material having optical characteristics, such as a refractive index, different from those of a base material of the light guide plate.

Abstract: A wavelength separator is provided with a reflective color filter arranged to intersect with an optical path of light emerging from a principal surface of a light guide plate, and a recycle portion arranged at a side of the light guide plate opposite to the reflective color filter. Out of light incident on the light guide plate, light reflected by the reflective color filter is returned to the reflected color filter again by being reflected by the recycle portion via the light guide plate.

Abstract: A backlight unit that converts ultraviolet light emitted from light-emitting lamps into visible light is disclosed. The backlight unit also reflects the visible light, thus achieving improved luminance. The backlight unit includes a plurality of light-emitting lamps arranged substantially in parallel, an outer case that fixes and supports the light-emitting lamps, and a reflection sheet disposed within the outer case and containing a fluorescent material that converts ultraviolet light into visible light and reflects the visible light.

Abstract: A lighting system to be used as an architectural panel or wall or communication device. The system works as a decorative or marketing element comprising a structural framework. The framework comprises an apparatus to affix in the frontal and back sides, an apparatus for the generation of light and images, and a reflective element located in the back side of the framework. The apparatus for generation of light is a source of light located around the internal edge of the framework. The image display is a luminescent layer comprising an external surface and an internal surface. The internal surface is intervened to allow the passage of the light produced by the source of light, and the light exits and is reflected on the reflective element to in turn be reflected on the internal surface of the luminescent layer.

Abstract: One or more LEDs are mounted within an LCD without the use of any printed circuit board (PCB), thus reducing the thickness of the LCD by about the thickness of the conventional PCB. In one embodiment, the LED and submount are mounted so that the submount is opposing the liquid crystal layer side of the LCD, so that the liquid crystal layers provide the mechanical support for the submount and LED die. The LED die (mounted on the submount) may be inserted into a cavity formed in the “top” surface of the light guide, and the top surface of the light guide is abutted against the liquid crystal layers. In such a configuration, the LED light source, including all supporting components, adds no thickness to the LCD. In another embodiment, on the “bottom” surface of the LCD opposing the LED die is an electrically switchable mirror that is either reflective or transparent. In its transparent state, the LED in the LCD may be used as a flash in a cell phone camera, while the LCD may be viewed to take the picture.

Abstract: An object of the invention is to provide a thin, low-power consumption, light-weight, and inexpensive surface light emitting apparatus using a hollow multilayer structure in combination with LEDs, and a method of light emission for the same. More specifically, the invention provides a surface light emitting apparatus comprising: a hollow multilayer structure formed from a plurality of hollow cells; a light source for emitting light into the hollow multilayer structure through an end face thereof containing a cell opening; and optical means for causing the light introduced through the cell opening-containing end face of the hollow multilayer structure to emerge from a surface of the hollow multilayer structure.

Abstract: A backlight unit includes: at least one lamp; and a plurality of optical sheets on the at least one lamp, the plurality of optical sheets having a micro-lens sheet.

Abstract: A signage device comprising one or more light sources, a waveguide or arrangement of waveguides and photoluminescent features coupled thereto. In one embodiment, a waveguide is adapted to receive light of a first wavelength and the photoluminescent features are adapted to emit light of a second wavelength in response to receiving light of the first wavelength.

Abstract: The present invention relates to a backlight apparatus and a liquid crystal display apparatus, capable of realizing a backlight apparatus having high color reproductivity without color irregularities in a backlight apparatus having a LED device as its light source. In the optical unit 61, there are disposed the dichroic mirror B which transmits green light Lg and red light Lr and reflects blue light Lb, the dichroic mirror G which transmits the light Lb and the light Lr and reflects the light Lg, and the dichroic mirror R which transmits the light Lb and the light Lg and reflects the light Lr, and they transmit or reflect the light emitted from the LED devices 11B, 11G and 11R to mix to form the white light Lw. The light Lw formed by the dichroic mirrors B, G and R is entered to the light guiding plate 62 by the mirror performing a total reflection.

Abstract: The present invention relates to a backlight apparatus and a liquid crystal display apparatus, capable of realizing a backlight apparatus having high color reproductivity without color irregularities in a backlight apparatus having a LED device as its light source. In the optical unit 61, there are disposed the dichroic mirror B which transmits green light Lg and red light Lr and reflects blue light Lb, the dichroic mirror G which transmits the light Lb and the light Lr and reflects the light Lg, and the dichroic mirror R which transmits the light Lb and the light Lg and reflects the light Lr, and they transmit or reflect the light emitted from the LED devices 11B, 11G and 11R to mix to form the white light Lw. The light Lw formed by the dichroic mirrors B, G and R is entered to the light guiding plate 62 by the mirror performing a total reflection.