Abstract: Provided is a light source device including a light guiding plate including a first internal reflection plane and a second internal reflection plane opposite to each other, a first light source irradiating an inside of the light guiding plate with first illumination light from its lateral side, and a diffusion member disposed opposite to the first internal reflection plane or the second internal reflection plane and diffusing incident light, wherein a plurality of transmission areas permitting the first illumination light to pass and to radiate toward an outside of the light guiding plate are provided on the first internal reflection plane or the second internal reflection plane, and the diffusion member is disposed opposite to the plurality of transmission areas and diffuses light having passed through the plurality of transmission areas.

Abstract: Provided is a light source device including a light guide panel which has a first inner reflecting surface and a second inner reflecting surface opposing each other, a first light source which irradiates first illuminating light from a lateral direction to the light guide panel, a second light source which is arranged opposite a side on which the second inner reflecting surface is formed on the light guiding panel, and which irradiates second illuminating light to the second inner reflecting surface, and an optical member which is arranged between the light guide panel and the second light source, and which reduces intensity of incident light, wherein a plurality of scattering areas are provided on the second inner reflecting surface which scatter and emit the first illuminating light from the first inner reflecting surface to outside of the light guide panel.

Abstract: A lighting device includes: a light guide plate having a light incident part in an end face and a light radiation part in a flat plate surface; a light source part opposed to the light incident part; a light shield member with which an area near the light incident part on the flat plate surface of the light guide plate is covered; and a switch part including a switch main body, a switch knob and a pressing member connected to the switch knob to press the switch main body by pressing down the switch knob. An end part of the switch knob opposed to a center of the flat plate surface of the light guide plate is located on the light shield member, and the end face of the light guide plate is located between a first virtual line passing the end part of the switch knob and perpendicular to the flat plate surface of the light guide plate and a second virtual line passing the center of the switch main body and perpendicular to the flat plate surface of the light guide plate.

Abstract: There is provided a light distribution control member with a plurality of first prisms that have inclined surfaces of which each edge of a hexagon is a base edge, and a plurality of second prisms that have inclined surfaces of which each edge of a triangle is a base edge. The first prisms are arranged in a houndstooth pattern, and the second prisms are arranged in areas surrounded by three first prisms.

Abstract: A backlight which arranges light emitting diodes on a side surface of light guide plate adopts the structure which allows the easy removal of the light guide plate from a mold and makes it difficult for a stress or the like to influence the fine structure of a light incident portion of the light guide plate. In a liquid crystal display device having a backlight which radiates light to a liquid crystal panel, LEDs which constitute a light emitting element are mounted on a light guide plate which is mounted on a backlight, and edge portions of the light guide plate are tapered such that a width of the light guide plate is increased in the removal direction of the side surface of the light guide plate. Further, an ejector-pin mark is formed on a lower surface of the light guide plate by pushing an ejector pin in the removal direction of the light guide plate.

Abstract: A backlight module for a liquid crystal display according to the present invention is provided. The backlight module includes a light guide plate, a light source, a first reflection sheet and a second reflection sheet. The light guide plate has an upper surface, a lower surface, and opposing first and second side surfaces. The light source is disposed on the first side surface of the light guide plate and comprises a plurality of point light sources. The first reflection sheet is disposed on the light source and the upper surface of the light guide plate to reflect light beams emitting from the light source to the light guide plate. The first reflection sheet includes a plurality of first portions, a plurality of second portions and a plurality of protrusion portions, wherein the first portions are positioned corresponding to the light source and arranged alternately with the second portions. The protrusion portions extend from the second portions toward the second side surface of the light guide plate.

Abstract: The present invention provides a planar light guide film for a backlight unit having at least one point light source, the light guide film comprising a light input surface for receiving light from the point light source, a light redirecting surface for redirecting light received from the light input surface and a light output surface for outputting at least the light redirected from the light redirecting surface.

Abstract: The present invention provides a planar light guide film for a backlight unit having at least one point light source, the light guide film comprising a light input surface for receiving light from the point light source, a light redirecting surface for redirecting light received from the light input surface and a light output surface for outputting at least the light redirected from the light redirecting surface.

Abstract: The present invention provides a planar light guide film for a backlight unit having at least one point light source, the light guide film comprising a light input surface for receiving light from the point light source, a light redirecting surface for redirecting light received from the light input surface and a light output surface for outputting at least the light redirected from the light redirecting surface. The light input surface further comprises a composite lens structure having a first and second circular tip segment each circular tip segment with a first contact angle, and a first and second circular base segment each circular base segment with a top and bottom contact angle, the contact angles of the circular base segments being greater than the contact angle of the circular tip segments.

Abstract: A lighting fixture includes at least one optic and at least one coherent light source for directing at least one substantially coherent light beam towards the at least one optic. Light provided from the at least one optic comprises an observable illuminated speckle patterned surface resulting from the coherent light beam.

Abstract: The present invention provides a planar light guide film for a backlight unit having at least one point light source, the light guide film comprising a light input surface for receiving light from the point light source, a light redirecting surface for redirecting light received from the light input surface and a light output surface for outputting at least the light redirected from the light redirecting surface. The light input surface further comprises a composite lens structure having a first and second circular tip segment each circular tip segment with a first contact angle, and a first and second circular base segment each circular base segment with a top and bottom contact angle, the contact angles of the circular base segments being less than the contact angle of the circular tip segments.

Abstract: An optical film is to attach on a light-incident surface of a light guide plate which cooperates with a plurality of side-light sources in order to form a backlight module. A plurality of specially designed micro-structures is formed on the optical film to better deflect the light generated by the side-light sources before the light enters the light guide plate. Such that, by having the optical film, the dark areas of the light guide plate can be reduced, the effective visual area of the LCD device can be enlarged, and the number of side-light sources as well as the cost for producing the backlight module and the LCD device can be substantially reduced.

Abstract: The invention provides an electrical connector and a backlight module using that electrical connector. The electrical connector includes a body and two conducting lines. The body is provided with first and second connecting portions, the former of which has a first connecting surface and the latter has a second connecting surface. An invariable relative angle is defined between the first and second connecting surfaces. The conducting lines are coated on the first and second connecting surfaces without crossing each other. The backlight module includes a light guide plate, two LED light bars mounted to two respective light receiving edges of the light guide plate, and an aforesaid electrical connector connecting the LED light bars. The electrical connector is electrically connected with the LED light bars and fixes their relative positions. Besides, it is easy to install the electrical connector to connect the LED light bars firmly.

Abstract: A display device is provided. The display includes a display main body, a light source, a diffusion part, and a transmission part. The display main body includes a display module and a cabinet protecting the display module. The light source generates light according to an operating state of the display main body. The diffusion part receives the light from the light source and includes a reflective surface oblique to an incident direction of the light. The transmission part includes an optical imaging part on which the light diffused from the diffusion part is projected and transmits the light to the outside at one side of the diffusion part.

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: A light-weight and energy-efficient lighting panel is constructed from a light-transmissive and light diffusive extrusion formed to have elongated hollows, which are hollow structures or volumes between two surfaces, at least one of which is transmissive and diffusive. Light projected into the hollow flows through the hollow and part of the light is emitted through the light transmissive and diffusive surfaces. Even though the light sources are located at the edges of a panel, the surface of the panel appears to be uniformly light by light sources distribute directly behind the panels rather than along the edges.

Abstract: A backlight unit (BLU) is disclosed. The BLU may include a light emitting diode (LED) module including at least one LED chip mounted on a substrate in a chip-on-board (COB) type, and a light guide panel including an incidence surface configured to receive light emitted from an emission surface of the LED chip and to include at least one insertion recess disposed corresponding to the LED chip, such that the LED chip is bonded to the LED module to be inserted in the insertion recess.

Abstract: The lighting module includes: a case including an opening from which light is emitted, a base portion corresponding to the opening, and a seat on at least one side of the base portion; a light source unit disposed on the seat; a light guide plate placed within the case and optically connected with the light source unit; and a diffusing plate placed within the case and placed below the light guide plate, wherein the lighting source unit includes a substrate, a plurality of light emitting diodes (LEDs) disposed on the substrate, and a sub-reflector which is disposed on the substrate and covers the plurality of the LEDs, and wherein at least 90% of the light emitted from the LEDs is directly irradiated onto the light guide plate.

Abstract: A planar light source device including: a point light source; and a light guide plate, wherein the light guide plate includes: an emitting surface; an opposite emitting surface; and a side surface that connects the emitting surface and the opposite emitting surface; wherein the point light source is arranged adjacent to the side surface of the light guide plate, wherein the light guide plate has a cylindrical hole that is formed at a position, which corresponds to the position where the point light source is arranged, and wherein the hole forms an opening at the side surface to emit a portion of the light to the outside of the light guide plate, the portion of the light is emitted by the point light source and the portion of the light being a portion that was not totally reflected at the side surface.

Abstract: A backlight unit includes a light guide plate including a first surface and a second surface, opposite to the first surface, having a recess formed toward the first surface, and a light emitting device array disposed in the recess, the light emitting device array including a plurality of light emitting device packages and a board, on which the light emitting device packages are disposed. The light emitting device packages include first light emitting device packages to emit first light in the recess in a first direction, second light emitting device packages to emit second light in the recess in a second direction opposite to the first direction, and third light emitting device packages to emit third light having light output different from at least one of the first light and/or the second light in the recess in a third direction intersecting the first and second directions.

Abstract: A tab is cut into a sheet of transparent material. The tab has a free end and a fixed end. A source of light is attached to the tab and the tab and the sheet are displaced along the z-axis of the sheet to direct light from the source into an edge of the sheet. The tab can include conductive traces for electrical connection to the light source or other electrical devices on the sheet. A variable display device adjacent the sheet is viewed through the sheet and the sheet with attached light source provides front lighting for the variable display device.

Abstract: An exemplary backlight module includes a frame, a light guide plate, a light source module and an optical film. The light guide plate is arranged on the frame and includes a light-incident surface and a light-emitting surface adjacent to the light-incident surface. The light source module includes a circuit board arranged between the frame and the light guide plate board, and a light emitting element arranged on the circuit board and facing the light-incident surface. The optical film includes a wavelength shifting portion arranged between the light emitting element and the light guide plate, a second extending portion arranged between the light guide plate and the frame, and a first extending portion connected between the wavelength shifting portion and the second extending portion and arranged between the light guide plate and the circuit board. A display device equipped with the backlight module is also provided.

Abstract: A spread illuminating apparatus includes a point light source; a light guiding plate having a light incident face on which the point light source is mounted, and a light output face. The light incident face has light incident prisms diffusing light emitted from the point light source into a planar space substantially parallel with the light output face. The light incident prisms include: a first prism portion including a plurality of first prisms convex relative to the light incident face; and a second prism portion including a second prism convex relative to the light incident face, the second prism portion being placed next to the first prism portion in a longitudinal direction of the light incident face. The first prism partially overlaps another first prism adjacent thereto, and the vertex of each first prism is set higher than the vertex of the second prism relative to the light incident face.

Abstract: In a light guide plate used in a lighting device, light-emitting elements are arranged at first intervals. However, the light emitting elements are partly arranged at second interval which is larger than the first intervals. Therefore, a rectangular shaped second diffusing areas formed by grooves are provided in an outer edge area arranged between a first diffusing area having a plurality of grooves (diffusing pattern) formed thereon and an end portion of the light guide plate so as to have a width smaller than the second intervals so as to face areas in which the light emitting elements are arranged at the second intervals.

Abstract: Provided is a backlight device which can reduce the size and weight of light-guiding members while also improving light use efficiency. The backlight device (10) is provided with a light-guiding plate (11) and a plurality of LEDs (12) which irradiate the light-guiding plate with light. The light-guiding plate includes a plurality of side surfaces (11a) and a plurality of light incident surfaces (11b) which are formed in a plurality of corners and are arranged opposite the LEDs. The side surfaces are arranged between adjacent light incident surfaces and are formed in convex shapes.

Abstract: An optically coupled light guide includes a light source having a surface defined by a channel, a light guide and an optical gel coupling the channel of the light source to the light guide.

Abstract: A backlight unit includes a light guide plate and a plurality of light sources. A side of the light guide plate is provided with an optical microstructure including a plurality of convex lens members aligned along the side. The height-to-pitch ratios of the convex lens members in the central region of the optical microstructure are different from those of the convex lens members in the side regions of the optical microstructure. For example, the height-to-pitch ratios of the convex lens members in the central region of the optical microstructure are larger than the height-to-pitch ratios of the convex lens members in the side regions of the optical microstructure. The light sources may be light emitting diodes (LED) directed toward the optical microstructure.

Abstract: Disclosed herein is a backlight device. The device includes: a light emitting element; a lens having an incident surface on which light emitted by the light emitting element is incident, and an outgoing surface which has an ability to converge the light and from which the light incident on the incident surface goes out; a light guide plate having a light incidence plane and introducing through the incidence plane the light going out from the outgoing surface, so as to perform surface light emission; and a reflective member operative to reflect a portion of the light going out from the outgoing surface of the lens, toward the incidence plane of the light guide plate.

Abstract: A backlight module includes a light guide plate, a reflecting unit, two light emitting units, and two light absorbing units. The light guide plate has a first surface, a second surface opposite to the first surface, and two light incident surfaces connecting the first surface and the second surface. The two light incident surfaces are respectively located at two adjacent corners of the light guide plate. The reflecting unit is disposed on the second surface. The two light emitting units are respectively disposed beside the two light incident surfaces. Light beams emitted by the two light emitting units are capable of entering the light guide plate respectively through the two light incident surfaces and being transmitted out of the light guide plate through the first surface. The light absorbing units are disposed between the second surface and the reflecting unit and are respectively adjacent to the two light incident surfaces.

Abstract: A light guide sheet is adapted to be used with a light emitter. The light guide sheet includes a light-transmissive base, a light inlet section having bonded to a lower surface of the base, and an illumination section for diffusing the light entering into the base. The light inlet section has an upper surface and an edge surface connected to the upper surface. The upper surface of the light inlet section is bonded to the lower surface of the base. Light emitted from the light emitter enters into the edge surface the light inlet section. The light inlet section causes the entering light to enter into the base. The light inlet section has a refractive index lower than a refractive index of the base. The light guide sheet provides a movable contact assembly capable of reliably illumination inexpensively.

Abstract: The present application is directed to a lighting fixture having a light emitting diode (LED) panel. The light fixture is configured to include a pair of LED configurations that are driven alternately by driving circuitry. The light fixture can include driving circuitry that is configured to be housed within a frame of the LED panel.

Abstract: A portable electronic device includes a housing, a display module received in the housing, and a light source device received in the housing. The light source device includes a light guiding unit, a light reflecting unit, and stimulated radiation medium positioned between the light guiding unit and the light reflecting unit. Outside light arrives at the medium through the light guiding unit and stimulates the medium to emit light, and the light emitted by the medium is reflected by the light reflecting unit to emit from the light guiding unit and illuminate the display module.

Abstract: A lighting assembly includes a transparent light guide having first and second major surfaces and a light input edge, and is configured to propagate light by total internal reflection. A light source located adjacent the light input edge is selectively operable to edge light the light guide. First light extracting elements at the first major surface are configured to extract light through the first major surface with a first light ray angle distribution. Second light extracting elements at the first major surface are configured to extract light through the second major surface with a second light ray angle distribution. The light extracted through the second major surface reduces visibility at viewing angles within a defined viewing angle range through the lighting assembly from the second major surface of the light guide greater than the reduction in visibility through the lighting assembly from the first major surface of the light guide.

Abstract: A backlight module and a liquid crystal display device are provided. The backlight module at least comprises a light source assembly and a light guide plate. The light source assembly provides multiple groups of parallel incident beams having different intensity. A light incidence surface is used to receive the parallel incident beams and then refract them to be multiple groups of parallel refracted beams. The parallel refracted beams can directly arrive at a bottom surface, and be emitted out from a light-emitting surface after reflected and dispersed by the bottom surface. There forms an included angle between a normal of the light incidence surface and the parallel incident beams, and the included angle is an acute angle. The backlight module and the liquid crystal display device of the present invention can reduce the reflection times of light in the light guide plate for improving the light use efficiency.

Abstract: A lighting system for an appliance is disclosed. In one embodiment, the lighting system includes a light shelf including a substantially planar light guide having a support member for releaseably coupling the light shelf to the appliance, a light injector coupled to a first end the light shelf, the light injector including a substrate having at least one light source disposed thereon and a housing for at least partially enclosing the at least one light source, wherein light emitted from the at least one light source is directed into the light guide, and an end piece coupled to a second end of the light shelf opposite the first end.

Abstract: An LED lamp including a first light source device and a second light source device is provided. The first light source device has a light exiting surface and a connection portion, and is used for emitting a first illumination light through the light exiting surface. The light exiting surface surrounds the connection portion. The second light source device is connected to the connection portion, and is used for emitting a second illumination light.

Abstract: A lighting assembly includes a light engine and a light guide. The light engine edge lights the light guide and includes a control assembly that controls light output according to one or more parameters to produce light output from the lighting assembly with a desired characteristic. Lighting assemblies are combined to form a modular lighting assembly.

Abstract: A light emitting assembly comprises a plurality of light sources and a solid light emitting panel member having a light input edge and a transition area between the light sources and the light input edge. Light from the light sources enters the transition area and mixes within the transition area prior to entering the panel member. Refractive surfaces on the transition area redirect the light into the panel member. A film is maintained in spaced relation from the panel member by spacers at a perimeter of the film to form a hollow layer between the panel member and the film. Deformities on or in the panel member cause light to be extracted from the panel member and pass through the hollow layer and out through the film.

Abstract: In order to suppress spread of light in a direction (shorter side direction) perpendicular to a direction (longer side direction) in which a light source is directed, the light source module of the present invention includes a light guide plate (20), an LED (12) for emitting light toward at least one edge surface in the longer side direction of the light guide plate (20), and a microlens group (20b) which (i) is provided on a lower surface (20c) opposite to an emission surface (20d) of the light guide plate (20) and (ii) causes light guided in the light guide plate (20) to be extracted through the emission surface (20d). The light source module further includes curved plane structures (20a) which are (i) made up of curved planes whose ridges (20e) extend in the longer side direction and (ii) provided in the emission surface (20d).

Abstract: The invention relates to an LGP and a back light module thereof, wherein the LGP comprises a light input surface, a bottom surface and a light output surface opposite to the bottom surface, and is characterized in that the bottom surface and/or the light output surface is provided with a plurality of microstructures, distribution rules for microstructures along the direction parallel to the light input surface of the LGP are: the microstructures in the middle of the LGP are closely arranged, and the microstructures on the two sides are sparsely arranged. In the LGP provided in the invention, the light output in the direction parallel to the light input surface can reach the brightness distribution with high middle and low edges, thereby achieving higher efficiency of light energy utilization.

Abstract: A backlight module is provided in the present disclosure. The backlight module comprises a light guide panel and at least one point light source adapted to provide light rays for the light guide panel. The light guide panel comprises a primary light guide region and a secondary light guide region with respect to the point light source, and a plurality of scattering microstructures are disposed in the secondary light guide region to scatter the light rays entering the secondary light guide region. The backlight module features uniform intensity and can significantly reduce or even eliminate occurrence of the so-called hotspot phenomenon. A liquid crystal display (LCD) device using the backlight module is also provided.

Abstract: An exemplary backlight module includes two light guide plates, two first light sources, a diffusing plate, and a second light source. The two light guide plates are arranged apart from each other, and each of the light guide plates includes a first side surface and a second side surface. The first side surface is adjacent to the other light guide plate. The second side surface is opposite to the first side surface and is away from the other light guide plate. The two first light sources are arranged adjacent to the second side surfaces of the two light guide plates, respectively, and provide first light beams for the two light guide plates, respectively. The diffusing plate is arranged between the first side surfaces of the two light guide plates. The second light source is arranged below the diffusing plate and provides second light beams for the diffusing plate.

Abstract: A light emitting diode package, a method of fabricating the same, and a display apparatus having the same are provided. The light emitting diode package includes a light emitting diode, a quantum dot layer, a band pass filter, disposed in a housing. The light emitting diode emits light of a first color. The quantum dot layer includes a plurality of quantum dots disposed on the light emitting diode to absorb a portion of the light emitted by the diode, and then emit light of a second color. The band pass filter is disposed on the quantum dot layer and has a first pass band corresponding to the light emitted from the diode and a second pass band corresponding to the light emitted from the quantum dots.

Abstract: The present invention provides a lighting device, comprising a first light guide adapted to guide light and output the light in a first direction; a second light guide adapted to guide light and output the light in another, second direction; a dividing structure adapted to receive light from a light source and guide the light into the first light guide and into the second light guide, wherein the dividing structure comprises controllable dividing means for guiding a first percentage of the light from the light source into the first light guide, and a second percentage of the light from the light source into the second light guide.

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 emitted from a primary light source such that the light emanates along the first edge of the sheet. The linear light source is also substantially transparent to light exiting from the first edge of the sheet.

Abstract: A backlight unit and a liquid crystal display device having the backlight unit are discussed. According to an embodiment, the backlight unit includes a frame including an opening, a light guide plate attached to the frame and formed larger than the opening, an adhesive member formed between the light guide plate and the frame, a colored light source providing colored light to the light guide plate, and a fluorescent excitation sheet formed on the light guide plate to emit colored light incident through the light guide plate as white light, wherein the adhesive member is disposed around lateral sides of the light guide plate.

Abstract: Disclosed herein is a backlight device. The device includes: a light emitting element; a lens having an incident surface on which light emitted by the light emitting element is incident, and an outgoing surface which has an ability to converge the light and from which the light incident on the incident surface goes out; a light guide plate having a light incidence plane and introducing through the incidence plane the light going out from the outgoing surface, so as to perform surface light emission; and a reflective member operative to reflect a portion of the light going out from the outgoing surface of the lens, toward the incidence plane of the light guide plate.

Abstract: A light bulb includes a base, light guide, and light source. The base is configured to mechanically mount the light bulb and receive electrical power. The light guide includes light input regions, at least one of the light input regions associated with an optical modifying characteristic, the light guide configured to propagate light by total internal reflection. The light source is located adjacent the light input regions. The light source and light input regions are variably positionable relative to one another to vary location at which light is incident on the light input regions such that light emitted from the light source is selectively apportioned between the light input regions. A characteristic of the light output from the light bulb is modified based on the optical modifying characteristic of the at least one of the light input regions and the relative positioning of the light source and light input regions.

Abstract: A lighting assembly includes a light guide and light source. The light guide includes light input regions, at least one of the light input regions associated with an optical modifying characteristic, and the light guide is configured to propagate light by total internal reflection. The light source is located adjacent the light input regions. The light source and light input regions are variably positionable relative to one another to vary a location at which light is incident on the light input regions such that light emitted from the light source is selectively apportioned between the light input regions. A characteristic of the light output from the lighting assembly is modified based on the optical modifying characteristic of the at least one of the light input regions and the relative positioning of the light source and the light input regions.

Abstract: A planar lighting device comprises: a light guide plate including a concave rectangular light exit plane, two light entrance planes containing two opposite sides of the light exit plane and disposed opposite each other, two symmetrical inclined planes opposing to the light exit plane such that their distance from the light exit plane increases with the increasing distance from the two light entrance planes toward the center of the light exit plane, a curved portion connecting the two inclined planes; two light sources respectively disposed opposite the two light entrance planes for emitting light to enter the light into the light guide plate through the light entrance planes; and sliding mechanisms allowing the light sources to slide in a direction parallel to the light entrance planes of the light guide plate to absorb the expansion and contraction of the light sources along the length thereof.