Abstract: An LED package includes a carrier, an LED chip and a light scattering material. The LED chip is disposed on the carrier, electrically connected with the carrier and adapted to emitting a light with wavelength ?1. The light scattering material is disposed on the carrier and includes scatters for scattering a light. A material of the scatters is a birefringent material (e.g. barium carbonate, strontium carbonate, lithium carbonate, sodium carbonate, potassium carbonate, magnesium carbonate and so forth) or nitride (e.g. boron nitride). The present invention further provides a direct type and an edge type backlight modules whose diffusion plates have the scatters. Since the light can be scattered by the scatters, an effect of light mixing in the LED package and the uniformity of the backlight modules can be enhanced.

Abstract: A diffusion unit of a light-emitting module is disposed adjacent to at least one light source. The light source emits a light beam. The diffusion unit includes a first diffusion sheet and a second diffusion sheet. The thickness of the first diffusion sheet is less than 1 mm, and the thickness of the second diffusion sheet is also less than 1 mm. The second diffusion sheet is disposed adjacent to the first diffusion sheet. The light beam is directly emitted from the light source directly to the first diffusion sheet. A light-emitting module and a diffusion sheet are also disclosed.

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 light source unit 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 light diverting members on a first side of the light diverting layer facing the diffuser. Surfaces of the light diverting members are disposed at more than one angle relative to a normal to the light diverting layer and also include one or more sharp changes of surface slope. The light diverting members spread the illumination light so as to be more uniform. Different light diverting members can have different apex angles. Also, different sides of a light diverting member can have best fit centers of curvature that are non-coincident.

Abstract: A projector includes: a light source device that emits a laser beam toward a projected surface; a scanning unit that scans the laser beam emitted from the light source device; a light diffusion member that diffuses the laser beam used for scanning by the scanning unit; and a converging unit that converges the laser beam going out from the light diffusion member on the protected surface.

Abstract: A diffuser used in a backlight module including a plurality of light sources is disclosed. The diffuser according to the present invention makes a uniform light output. The diffuser includes a transparent substrate and a plurality of optical structures. The transparent substrate has an entrance surface and an exit surface. The plurality of optical structures is disposed on the exit surface, each optical structure is dented from the exit surface to the interior of the transparent substrate and forms a refractive convex within the transparent substrate, and each refractive convex corresponds to one of the plurality of the light sources. The maximum value of the included angle between the tangent to the refractive convex edge and the normal to the exit surface is smaller than 30 degrees, such that an incident light ray from the light sources refracts and deviates from the normal to the refractive convex through the refractive convex.

Abstract: A surface light source device 1 includes a base member 3 provided with a plurality of point-source lines, each of which has a plurality of point sources 11 arranged in a line, and a plurality of diffuse transmission members 14 for covering the point-source lines. Each of the diffuse transmission members 14 is located while keeping substantially equal distances from the respective point sources 11 at least in a direction perpendicular to each of the point-source lines. Consequently, it is possible to allow light fluxes emitted from the point sources 11 to be transmitted in diffusion through the diffusion transmission members 14.

Abstract: A backlight unit includes at least one light emitting diode; and a diffusion plate over the at least one light emitting diode and including at least one opening portion corresponding to the at least one light emitting diode.

Abstract: The present invention is related to a direct-type backlight module. The module includes a plurality of lamps, a plurality of lamp holders, a frame and a bezel. The frame has a bottom plate, and the lamp holders and the frame are formed into one-body. The lamp holders are disposed on the bottom plate for fixing the lamps. The frame is disposed on the bezel. The direct-type backlight module of the present invention is advantageous in having a lower fabrication cost.

Abstract: There are provided a plane light source and an LCD backlight unit having the same.

Abstract: An illuminating device which is provided with a plurality of light source units is provided. Each of the plurality of light source units includes a light emitting unit having a light emitting device, a first optical system that adjusts an optical path of light emitted from the light emitting unit, an electrode that supplies power to the light emitting unit, and a connecting element that connects the light emitting unit to the electrode and is disposed so as to block a part of the optical path of light from the light emitting unit thus to create an unilluminated area. In this structure, the plurality of light source units are arranged such that unilluminated areas of the plurality of light source units are substantially uniformly distributed over an entirety of an area illuminated by all the plurality of light source units.

Abstract: An exemplary prism sheet includes a transparent main body. The main body includes a first surface, a second surface opposite to the first surface, a plurality of elongated waved protrusions formed in the first surface, and a plurality of micro-depressions formed in the second surface. Each of micro-depressions has four connecting sidewalls. A transverse width of each sidewall progressively decreases with increasing distance from a bottom surface that is coplanar with the second surface. A backlight module using the present prism sheet is also provided.

Abstract: A backlight unit for slimmed structure and exhibiting uniform brightness through the improvement of its luminance efficiency and the quality in appearance of which is improved by the removal of bright lines, and a liquid crystal display device having the same are disclosed. The backlight unit includes a plurality of light emitting lamps disposed above a cover bottom such that the light emitting lamps are arranged at regular intervals, a diffusion plate disposed above the light emitting lamps, the diffusion plate including a substrate, a light control part formed on the bottom surface of the substrate corresponding to the light emitting lamps, and lens parts mounted on the top surface of the substrate, and an optical film disposed above the diffusion plate.

Abstract: This invention relates to uniform backlighting of surfaces by semiconductor light sources. Various semiconductor light sources are combined into identical illumination groups. These identical illumination groups are arranged so that uniform backlighting of a surface is made possible. For homogeneous color mixing to be achieved, especially at edges, each illumination group in the arrangement has at least one adjacent illumination group in a different orientation.

Abstract: There is provided an optical plate. The optical plate includes a supporting substrate and an optical diffuser film. The optical diffuser film has a density of light scattering particles to provide light diffusion. The optical diffuser film has a surface facing the supporting substrate, wherein a first portion of the surface facing the supporting substrate contacts the supporting substrate. There exists a gap between a second portion of the surface facing the supporting substrate and the supporting substrate, wherein the ratio of the area of the first portion to the second portion is less than 10%.

Abstract: The present invention is directed to an LED light fixture. The LED light fixture comprises an interface for connecting the fixture to a source of electrical power, a power control section for supplying and controlling power to an LED array producing a light of a suitable intensity and color for the task for which the fixture is to be used and a light diffuser for diffusing the light from the LED array. The present invention is also directed to a novel power control for supplying and controlling power to an LED array comprising a non switching linear design based on a monolithic approach of power control whereby the load (the LED array) becomes part of the power control system.

Abstract: An illumination device is provided which includes a lighting stand (3) in which a torch portion (11) including a light source support (13) on which a plurality of light sources (2a to 2c) is supported is provided upright on a base in which a control circuit unit (22) to change the light emission from each of the light sources 2a to 2c, a light scattering member (4) formed by molding a semitransparent resin to have a cap-like shape nearly like a candle frame, fitted on the light source support (13) and which scatters the illumination light emitted from the light sources (2a to 2c), to be bright itself, a shade member (5) formed from a transparent resin and attached over the outer surface of the lighting stand (3), and a shielding/diffusing member (6) assembled, being rounded like a cylinder, inside the shade member (5) to diffuse the illumination light emitted from the light sources (2a to 2c).

Abstract: A diffuser used in a backlight module including a plurality of light sources is disclosed. The diffuser according to the present invention makes a uniform light output. The diffuser includes a transparent substrate and a plurality of optical structures. The transparent substrate has an entrance surface and an exit surface. The plurality of optical structures is disposed on the exit surface, each optical structure is dented from the exit surface to the interior of the transparent substrate and forms a refractive convex within the transparent substrate, and each refractive convex corresponds to one of the plurality of the light sources. The maximum value of the included angle between the tangent to the refractive convex edge and the normal to the exit surface is smaller than 30 degrees, such that an incident light ray from the light sources refracts and deviates from the normal to the refractive convex through the refractive convex.

Abstract: A liquid crystal display apparatus is provided which has two or more options in selection of the range of viewing angles. A surface light source device according to the invention has a main surface from which light is emitted, and includes a plurality of light guide plates corresponding to a plurality of regions obtained by dividing the main surface in parallel; an optical film provided on the exit surface side of the light guide plates; and a light driver that controls the turning on and off of the plurality of light guide plates. The optical film includes a light-guide slit film which transmits light that is emitted from the light guide plates and that is within a certain range of angles.

Abstract: A backlight assembly includes: a light emitting unit having a plurality of unit LEDs formed in a matrix, each of the unit LEDs having a red LED, a green LED, and a blue LED; a plurality of bottom reflectors disposed under the respective unit LEDs; and a plurality of side reflectors disposed around the respective unit LEDs.

Abstract: An illumination arrangement comprising a plurality of light-emitting semiconductor components (1), arranged in a row, a diffuser (2), which is illuminated by the light-emitting semiconductor components during operation of the illumination arrangement, intermixes light emitted by the semiconductor components during operation and has a light coupling-out area (200) remote from the semiconductor components, and two mutually opposite, reflective longitudinal side faces (3), between which the row of light-emitting semiconductor components is arranged, which run perpendicular or obliquely with respect to the light coupling-out area, and which reflect at least part of the light emitted by the light-emitting semiconductor components during operation in the direction toward the light coupling-out area.

Abstract: An aspect of the present invention provides a compact light guide device and a light guide apparatus having high productivity and an even light emission property. A light guide device is made of a translucent material, and LED is disposed in a notch step portion formed by cutting at least a part of an inner peripheral surface, thereby guiding light from LED to emit the light to emit the light to the outside. Particularly, in a surface and a backside of a sidewall portion of the notch step portion, the sidewall portion facing a light-emitting portion of the light-emitting element, at least an inward surface constitutes a reflecting surface diffusing the light, and a pair of facing surface adjacent to each other on both sides of the sidewall portion constitutes a light acceptance surface receiving the light reflected from the reflecting surface.

Abstract: A light-source module is described having at least one light-emitting element (3) such as, in particular, LEDs, light guides, collimator elements or lens elements, which together form a light exit area, as also is a holder for a module of this in the form of an LED module, system, such as in particular a motor vehicle headlight or a lighting or projecting means, that is intended to have a given light emission pattern. For this purpose, the module is able to be positioned relative to at least one reference plane of the optical system and, at the same time, is able to be replaced easily without soldered, bonded or welded connections being required.

Abstract: A liquid crystal display device may include a backlight unit for providing light for the display. A backlight unit may include light modules. The light modules include colored LEDs surrounded by a first lens for refracting the light from the LEDs. A second lens surrounds the first lens for further refraction of the light to improve brightness and the uniformity of the light.

Abstract: An exemplary backlight module (200) includes a light emitting unit (220). The light emitting unit includes a plurality of light sources (227, 228, 229) configured for providing color light beams respectively, and a mixer (222) configured for mixing the color light beams into white color beams. The mixer includes a plurality of light guide structures (223) respectively corresponding to the light sources and a mixing body (226) connected to the light guide structures. The light guide structures are configured for guiding color light beams emitted from the light sources to the mixing body. The color light beams emitted from all the light sources being partially mixed into white light beams in the mixing body.

Abstract: An illuminating device includes a plurality of light-emitting diodes, a plurality of first light-reflecting parts, and a plurality of second light-reflecting parts. Each of the plurality of first light-reflecting parts has a first light reflecting surface surrounding one of the light-emitting diodes. Each of the plurality of second light-reflecting parts has a second light reflecting surface surrounding one of the light-emitting diodes. The shape of the first light reflecting surface is different from that of the second light reflecting surface.

Abstract: The present invention relates to a diffusion plate used in a direct-type backlight module and a method for making the same. At least one of the surfaces of the diffusion plate has a microstructure constituted by repeated undulation that can refract and diffuse the incident light beams that enter the diffusion plate. Therefore, the paths of the light beams after entering the diffusion plate are changed, which raises the luminance of the backlight module.

Abstract: An exemplary optical plate includes a first transparent layer (21), a second transparent layer (23) and a light diffusion layer (22). The first transparent layer includes an outer surface (210) and a plurality of semi-spherical depressions (211) protruding out from the outer surface. The second transparent layer includes an outer surface (230) and a plurality of conical frustum-shaped depressions (231) defined at the outer surface. The first transparent, the light diffusion layer, and the second transparent are integrally formed, with the first transparent layer in immediate contact with the light diffusion layer, and the second transparent layer in immediate contact with the light diffusion layer. The light diffusion layer includes a transparent matrix resin (221) and a plurality of diffusion particles (222) dispersed in the transparent matrix resin.

Abstract: A lighting device which comprises at least a first solid state lighting device; and at least a first patterned diffuser which comprises a plurality of optical features. If the first solid state lighting device is illuminated, at least some of the light emitted by the first solid state lighting device enters the first patterned diffuser and exits the patterned diffuser. In some embodiments, the patterned diffuser emits light in a specific shape (e.g., substantially square, rectangular, hexagonal or octagonal). In some embodiments, optical features are positioned on the first surface of the side of the first patterned diffuser that the emitted light enters. Also, a method of lighting which comprises illuminating one (or more) solid state lighting device which emits light which enters a patterned diffuser which comprises a plurality of optical features, and exits the patterned diffuser.

Abstract: There is provided a lighting assembly comprising a plurality of lighting devices, each of which comprises a patterned diffuser having optical features. Each of the lighting devices is positioned such that if they are illuminated, at least 50, and in some cases 75 or more, percent of light emitted from each of the lighting devices will contact an illumination surface within an area of a defined shape (e.g., square, rectangular, hexagonal, octagonal, etc.), the respective shapes each sharing at least one boundary with another shape. Also, methods of lighting comprising illuminating lighting devices positioned in such a way.

Abstract: An exemplary optical plate includes a first transparent layer, a second transparent layer and a light diffusion layer. The light diffusion layer is between the first and second transparent layers. The light diffusion layer, the first and second transparent layers are integrally formed. The light diffusion layer includes a transparent matrix resin and a plurality of diffusion particles dispersed in the transparent matrix resin. The first transparent layer includes a plurality of first V-shaped protrusions at an outer surface distalmost from the second transparent layer. The second transparent layer includes a plurality of second V-shaped protrusions at an outer surface distalmost from the first transparent layer. A direct type backlight module using the optical plate is also provided.

Abstract: An illumination device including an integrating sphere and at least one light source. The integrating sphere is hollow and houses the at least one light source in it. The light source can be manipulated between a first configuration and a second configuration. The illumination device emits a first spectrum of light when the light source is in the first configuration, and a second spectrum of light when the light source is in the second configuration.

Abstract: An improved light fixture lumenaire having a diffractor-diffuser system optimized for use with multi-lamp lumen packages including high-efficiency fluorescent bulbs. The diffractor has a profile defined by first, second and third parabolic segments, and continuously tapering facets for improved lighting performance. Different diffuser geometries are provided to generate differing light distribution patterns, including a conical diffuser, and a diffuser having a fresnel lens portion and an angled flange portion. Equal numbers of facets and/or facets of similar geometrical profile may be provided on the diffuser and on the diffractor.

Abstract: The present invention provides a light diffuser plate capable of emitting light with high uniformity in luminance. A light diffuser plate 3 of the present invention has a relief structure section 4 consisting of a plurality of triangular ridges having a triangular cross section disposed on at least one side thereof, wherein the relief structure section 4 comprises first triangular ridges 6 of an isosceles triangular shape having a vertex angle ? of 50 to 70 degrees and second triangular ridges 8 of an isosceles triangular shape having a vertex angle ? of 110 to 130 degrees.

Abstract: An illumination system includes a backlight housing, a plurality of light valves coupled to the backlight housing, and a plurality of light sources arranged in the backlight housing and optically coupled to the light valves. The illumination system may further include a light-scattering substrate optically coupled between the plurality of light sources and the light valves, and a plurality of light modulating dots patterned on the substrate to modulate transmitted intensity of light from the plurality of light sources to achieve increased luminance uniformity by decreasing banding caused by the separated light sources. The light modulating dots may include comprise reflective dots, transmissive dots, absorptive dots, or a combination thereof.

Abstract: The present invention provides a bottom lighting backlight module comprising: a light reflecting plate, a plurality of light sources such as lamp and LED; and a diffusion sheet; wherein said diffusion sheet has an excavated structure of shape with cross-section of an inverted triangle having a specific apex angle ranging from 110 degrees to 130 degrees. Some of the light incident on the excavated structure inside the diffusion sheet can be totally reflected and redirected sideways, so that it is possible to reduce the local brightness for area around each light source but significantly improve the evenness of brightness for the whole module.

Abstract: A spread illuminating apparatus includes a plurality of lighting units which are arranged two dimensionally, and each of which includes light sources and a light conductor plate which has a light inlet surface having the light sources disposed thereat, an opposite end surface opposite to the light inlet surface, and a major surface defined as a light outlet surface for the lighting unit, wherein an overhang is formed integrally with the light conductor plate so as to protrude from the opposite end surface, and wherein every two adjacent lighting units of the plurality of lighting units are jointed to each other such that the light outlet surface side face of the light source of the lighting unit is covered by the overhang, and wherein a light diffusing means is disposed at a side surface of the overhang positioned toward the light outlet surface.

Abstract: A diffuser plate and a backlight module using the same are provided. The backlight module includes a light source module and the diffuser plate disposed on the light source module. The diffuser plate has a plate body, a plurality of light-scattering areas and a plurality of light-gathering areas. The light-scattering areas and the light-gathering areas are alternately disposed on a light-entrance surface or a light-exit surface of the plate body. The light-scattering area includes a plurality of cambered units while each cambered unit has a convex cambered surface. The light-gathering area includes a plurality of prism lenses. Two side surfaces of the prism lenses intersect at an angle ?.

Abstract: A structure of direct type backlight module with high uniform emitting light explores a design of lenticular lens of diffusing plate. The lenticular lens is against the central location of light source, where the light of lamp is scattered and the curvature of said lenticular lens far away light source is enlarged, then to reduce the scatter effect and achieve uniformity. The other lenticular lens also can be designed for light location and distance. Each lenticular lens is against light location, and incident light can be reflected through the angle of microstructure surface at the entrance facet, but farther location can be resulted in total refraction due to large inclined angle, and diminishing the transmission light of light source then influencing the uniformity, finally reducing total reflection of wide angle.

Abstract: A direct-type back light module, a diffuser plate and a method fabricating the same are provided. The direct-type back light module includes a lamp box, a plurality of light sources and a diffuser plate. The light sources are arranged in the lamp box to serve as a surface light source. The diffuser plate is disposed in the lamp box above the light source. In addition, a plurality of micro bubbles is distributed in the diffuser plate to diffuse the light incident on the diffuser plate. The method of fabricating the diffuser plate includes providing an injection molding apparatus and a diffuser plate material. Then, at least a diffuser plate material is injected to form the diffuser plate. In addition, a plurality of micro bubbles is formed within the diffuser plate material during the injection step.

Abstract: A decorative light and a landscape lighting system incorporating a plurality of decorative lights. The decorative lights are structured for attachment to the top of landscape edging. The lights include a body having a channel formed in its bottom surface for receiving the top edge of landscape edging. The channel may be formed by first and second downwardly projecting walls. The surface of the walls may provide an interior profile or key shape that corresponds to the shape of the top of the landscape edging. An illumination device, such as a light emitting diode, is housed within the decorative light.

Abstract: A light dimming dot pattern is provided for an LCD in which the diameter of dots is changed in a range from approximately 0.16 mm to approximately 0.65 mm depending on the distance of the dots from a fluorescent tube (13) in such a manner that the volume of the shielded light is increased and decreased at a location close to a position overlying the fluorescent tube (13) and at a location remote from the fluorescent tube (13), respectively. In this manner, a light dimming dot pattern with a transmittance for all light rays of approximately 62% (roughly in the vicinity of 62%), higher than the transmittance for all light rays in the conventional technique not higher than 50%, is produced. Consequently, the light of uniform high luminance may be produced without raising the luminance of the fluorescent tube (13), and hence an LCD of high luminance may be realized.

Abstract: An LED package comprises an LED for emitting LED light, and a conversion material remote to said LED for down-converting the wavelength of LED light. The package further comprises a reflector directing at least some of the LED light toward the conversion material, the conversion material down-converting the wavelength of at least some of the reflected LED light. A method for emitting light from an LED package comprising providing an LED, reflector and conversion material, and emitting light from said LED, at least some of the LED light emitted toward the reflector. The method further comprises reflecting at least some of the LED light toward the conversion material, and converting at least some of said reflected LED light at the conversion material. At least some of the converted reflected LED light is emitted by the LED package.

Abstract: An optical material of the present invention includes a resin having a luminous transmittance of about 70% or more and a filler mixed therein having a thermal conductivity of about 3 W/m·K or more.

Abstract: An illumination device for a display apparatus provided on a rear side of a display panel of the display apparatus includes a plurality of rod-like light sources arranged substantially parallel to each other; and a light scattering member for scattering light, the light scattering member being provided between two adjacent rod-like light sources among the plurality of rod-like light sources.

Abstract: Aspects of the invention can provide an image display device that can include light sources provided, respectively, for regions obtained by dividing an image forming region of an electro-optic modulator into plural regions to irradiate corresponding regions, and a light source control portion that performs lighting control on the light sources. The light source control portion can perform the lighting control on the light sources for the respective region independently in sync with writing of image data to the electro-optic modulator, and the lighting control can be performed in such a manner that the light source corresponding to at least one region among the plural regions is kept unlit in a writing period for a screenful of image data.

Abstract: An improved LED signaling device employing a number of LEDs arranged in a specific pattern. At least some of the LEDs are received in a corresponding reflective cavity with an associated output angle. The LED signaling device also employs first and second lenses. The first lens collects the light emitted by the LEDs and disperses the light such that the second lens is flooded. The second lens collects the light dispersed by the first lens and collimates the light. The type of LEDs used, their specific pattern, the specific output angles of their corresponding reflective cavities, and the combination of the first and second lenses insure that the LED signaling device meets or exceeds the minimum luminous output intensity requirements and uniformity requirements.

Abstract: The invention is a replacement for a conventional incandescent or halogen light bulb. Besides providing regular illumination, it has advantages over a conventional bulb while maintaining the bulb's decorative function, such as visual effects associated with the bulb's envelope or shade. The invention comprises a connector equivalent to a standard light bulb base, at least one light emitting diode (LED), and a driving circuit hosted on a module such as a printed circuit board and adapting the supply voltage to the requirements of the LED. Compensation for the effects of temperature may be included. The invention may also include other circuitry to support various enhanced features such as novel decorative features or control over the brightness, color, or other characteristics—all potentially varying over time or being controlled remotely.

Abstract: A system and method for illuminating is disclosed. The disclosed invention is fittable and usable in many conventional street lighting structures. The system includes a circuit board which includes a plurality of LEDs. Each end of the circuit board is insertable into a receiving structural member on each side. Each of the structural members are installable on an existing lens in the predisposed structure. Also included with the system is an Edison connector which electrically communicates with the circuit board so that the LEDs can be illuminated.

Abstract: A beacon light member including a housing configured to be attached to a base member of a beacon light, the base member of the beacon light configured to utilize an incandescent light source. A power supply contained in the housing is configured to electrically connect to a power point in the base member. At least one light emitting diode (LED) light source is contained in the housing. A beacon light including a first base member, a second member, and at least one incandescent light source can also be retrofit. Under the retrofitting method, the at least one incandescent light source is removed, the second member is removed, and the second member is replaced with a beacon light module including at least one light emitting diode (LED) light source.

Abstract: The invention comprises a lighting and/or signalling device in particular for a motor vehicle, comprising: at least one light source illuminating a light guide, part of whose surface has locally diffusing and/or reflective areas able to diffuse/reflect towards the inside part of the light propagating in the guide, at least one end face of the guide remote from the source comprising a means of reflecting light towards the inside of the guide, the reflection means comprising: at least one cube corner projecting outwards having three facets in a trirectangular trihedron, this cube corner being provided in the material of the light guide so as to cause three successive reflections of rays falling on one of the facets under total reflection conditions, in order to return them in the guide in a direction substantially parallel to the incident direction of the said rays, or at least one said cube corner and at least one corner projecting outwards and bevelled, having two facets, this corner being designed to return