Abstract: A backlight module includes a light guide plate, a light source disposed at a side of the light guide plate, a diffuser sheet positioned over the light guide plate but not directly contacting the light guide plate, and a light mixing space positioned between the light guide plate and the diffuser sheet so that light emitted from the light guide plate efficiently mixes in the light mixing space before entering the diffuser sheet and emitted out of the backlight module.

Abstract: The disclosed subject matter includes an LED lighting unit that uses a light guide, and a thin vehicle lamp using the light guide and which can conform to light distribution standards for vehicle lamps. The LED lighting unit can include a light guide having one flat surface formed with many light diffusing patterns, a plurality of LEDs located along one end surface of the light guide, and a reflection board including a reflector located on a bend portion thereof. The reflection board can be located adjacent and extend along the one flat surface of the light guide. The one flat surface can form a large light distribution area with a uniform brightness. The reflector located at the bend portion of the reflection board can form a narrow light distribution having a maximum brightness at a central portion. Thus, the LED light unit can conform to optical characteristics for a vehicle lamp. A vehicle lamp using the above-described LED light unit can be relatively thin.

Abstract: An exemplary light guide plate includes a light input surface, a light output surface adjoining the light input surface, and a reflecting surface opposite the light output surface. At least one of the light output surface and the reflecting surface defines a plurality of microstructures extending along a direction from a first side away from the light input surface to the light input surface, and the extending paths of the plurality of microstructures gradually transform from parallel straight lines to intersecting curves.

Abstract: An optical sheet includes a substrate onto which light is incident, and a convex part protruded from the substrate by a predetermined thickness. A thickness of the convex part increases from an edge to a center thereof.

Abstract: A backlight module includes a light source and a light guide plate. The light guide plate includes a light-receiving surface next to a light source, a light-emitting surface, and a light-reflecting surface oppose to the light-emitting surface. A plurality of notches are formed on the light-reflecting surface, and each notch has a first inner surface facing the light source and a second inner surface back to the light source and opposite to the first inner surface. The inclination angle of the first inner surface with respect to the light-reflecting surface is no more than 35 degrees.

Abstract: An exemplary optical plate has a first surface and an opposite second surface. A plurality of parallel elongated arc-shaped groove is defined on the first surface. The second surface of the transparent main body defines a plurality of parallel elongated arc-shaped protrusions and a plurality of parallel elongated V-shaped protrusions. Each arc-shaped protrusions intersects with each elongated V-shaped protrusion. An extending direction of each elongated arc-shaped protrusion intersects with an extending direction of each elongated arc-shaped groove.

Abstract: A light guide includes a body having an elongate shape and a plurality of light-reflecting faces and light-emitting faces extending along the body. The light-reflecting faces extend in a stepped fashion along the body in the direction of a longitudinal axis of the light guide and are configured to reflect light rays by the principle of total internal reflection. Each light-emitting face is disposed along the body opposite a corresponding light-reflecting face. Each light-emitting face is configured to emit light reflected by the corresponding light-reflecting face. The light-emitting faces are also disposed on the body in a stepped fashion. Steps of the light-emitting faces correspond to steps of the light-reflecting faces. In another aspect, the light-reflecting faces are separated by stepped-down faces. The stepped-down faces are oriented at a stepped-down angle in the range of about 1 and 10 degrees with respect to the longitudinal axis of the light guide.

Abstract: An electronic device is provided. The electronic device comprises a housing, a light source and a decoration element. The light source is disposed in the housing to provide a light beam. The decoration element is embedded in the housing and partially exposed on an outer surface of the housing. The decoration element comprises a light entering surface, a reflective surface, a light emitting surface and a plurality of meshed spots. A light beam enters the light guide through the light entering surface, is reflected by the meshed spots, and exits the light guide through the light emitting surface.

Abstract: Embodiments herein relate to light systems designed to reduce Moiré interference while simultaneously reducing dark regions due to the edge shadow effect. For example, configurations of light sources, light guides and turning features may direct light across a display while reducing Moiré interference.

Abstract: An optical device for collecting and distributing light from a quasi point light source which includes a planar light guide having surfaces through which optical axes are periodically spaced. There is at least one quasi point light source, the optical axis of each being coincident with the optical axes of the surfaces. There is also at least one optical element depressed within the edges or adjacent surfaces of the light guide at least partially rotated about the optical axis, and having a focal point at the quasi point light source.

Abstract: A vehicle light has at least one light source and a light guide device into which light emitted by the light source can be directed and which possesses output means for outputting the light or a portion of the light. Diverting means are provided between the light source and the output means in such a way that widening and parallelization of the light takes place inside the light guide device. The diverting means comprise at lest one incision constructed on the light guide device which defines internal reflection surfaces for diverting the light laterally from a main beam direction of the at least one light source, and an end face of the light guide device that has external reflection surfaces that divert light already diverted laterally previously in the main beam direction of the at least one light source.

Abstract: A backlight unit, which can emit one of s-polarized light and p-polarized light using wire-grid polarizer, and a liquid crystal display apparatus employing the backlight unit are provided. The backlight unit includes: a light source radiating light; a light guide plate disposed with the light source at a lateral side of the light guide plate, guiding the light incident on the lateral side from the light source; a wire-grid polarizer formed on a predetermined layer of the light guide plate transmitting a first polarized component of the light through the predetermined layer and reflecting a second polarized component of light; a reflector reflecting the light to un upper surface of the light guide plate; and a polarization converter changing a polarization of the light not emitted through the upper surface of the light guide plate.

Abstract: A backlight includes a visible light transmissive body having a light guide portion and a light input portion. The visible light transmissive body primarily propagates light by TIR and includes a light input surface and a light output surface. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. A light source is disposed adjacent to the light input surface and emits light into the light input portion. A specularly reflective layer is disposed adjacent to but not in intimate contact with the opposing side surfaces and reflects more than 80% of visible light incident on the specularly reflective layer.

Abstract: A backlight module includes a light source and a light guide plate. The light guide plate includes a base plate and a reflecting film. The base plate has an upper surface on which a plurality of protrusions is formed, a curved bottom surface opposite to the upper surface, and a housing defined therein. The light source is accommodated in the housing. The reflecting film is plated on the curved bottom surface, for reflecting the light beams reaching the curved bottom surface to emit from the upper surface. The plurality of protrusions diffuses light beams.

Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of enclosing V-shaped protrusions, a plurality of microstructures and at least one lamp-receiving portion. The light output surface is opposite to the bottom surface. The enclosing V-shaped protrusions are formed on the bottom surface. The microstructures are formed on the light output surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.

Abstract: In the lighting device, cylindrical lenses are provided on a reflection surface side of a light guide plate, and the adjacent cylindrical lenses are connected by a concaved curved surface.

Abstract: In a method of forming a thin light guide plate which includes a compression step in an injection molding step, an optical pattern is liable to be adhered to a mold. Further, in removing the light guide plate from the mold using an ejector pin, a stress is concentrated on a local area of the light guide plate thus generating warping, deformation or irregularities in size of the light guide plate. To overcome such drawbacks, a liquid crystal display device is configured such that an optical pattern portion is compressed, and the light guide plate is removed by making use of a peripheral portion of a mold thus preventing the generation of stress in a local area of the light guide plate due to an ejector pin.

Abstract: It is a light guide plate characterized by having a groove in a snaking pattern formed on a transparent plate made of acrylic or other materials with light transmitting characteristics. It substantially increases efficiency and its manufacturing cost can be greatly reduced.

Abstract: A compact backlight system has a light-emitting panel (1) with a front wall (2), a rear wall (3) situated opposite thereto, a first edge surface (4) and, opposite thereto, a second edge surface (5) . A first light source (6) is associated with the first edge surface (4) which is light-transmitting. The light-emitting panel (1) widens over a widening section (100) from the first edge surface (4) in a direction towards the second edge surface (5), and the rear wall (3) is provided over the widening section (100) with a multiplicity of steps (13, 13?, . . . ) each having a surface (17) facing the front wall (2) which is substantially parallel to the front wall (2).

Abstract: An optical navigation devices and methods that utilize an internal reflection surface to reflect and collimate sidelight from a light source are described. A light source is configured to emit light. The sidelight from the light source is reflected and collimated by an internal reflection surface towards a work surface. The light received by the sensor is used to measure movement of the optical navigation device relative to the work surface.

Abstract: A backlight unit for a display device is disclosed. The backlight unit includes a first optical sheet, a light source to supply light to the first optical sheet, and a first antireflection layer on a surface of the first optical sheet.

Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of microstructures, and at least a lamp-receiving portion. The bottom surface is opposite to the light output surface. The microstructures are formed at the light output surface and the bottom surface respectively. Each microstructure has circular cross-sections taken along a plane parallel to its base surface thereof, a diameter of the circular cross-sections decreasing along a direction away from its base surface thereof. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.

Abstract: A display unit includes a light source and at least one or more transparent display plates. Each transparent display plate has a plurality of fine dimples formed on at least one surface thereof. Light rays from the light source are respectively made incident on the transparent display plates and are reflected by the plurality of fine dimples so that a pattern of at least one of characters, graphics, and symbols is made visually observed uniformly.

Abstract: An edge-light type light guide plate 30 is provided and has a first surface 31 and a second surface 32 that are opposed to each other, and a peripheral edge surface extending between the peripheral edges of the first and second surfaces. A part of the peripheral edge surface is defined as a light entrance plane 30a. The first surface 31 has a series of parallel elongated convex surfaces 31a that have an arcuate cross-section and extend in a direction substantially perpendicularly intersecting the light entrance plane 30a. The second surface 32 has a series of parallel elongated concave surfaces 32a that have an arcuate cross-section and extend in a direction substantially perpendicularly intersecting the elongated convex surfaces 31a on the first surface.

Abstract: A liquid crystal display device according to the present invention includes: a first substrate; a second substrate disposed so as to be closer to a viewer than the first substrate is; a liquid crystal layer provided between the first substrate and the second substrate; a light source provided by a side of the first substrate, the light source emitting light toward a side face of the first substrate; and a selective reflection layer formed on a principal face of the first substrate opposite from the viewer, the selective reflection layer selectively reflecting light of a specific polarization direction.

Abstract: Optical assembly includes a generally planar light output surface located on a first major plane, and a generally planar second surface located on a second major plane approximately parallel to the first major plane and superimposed thereon. Both the light output surface and the second surface have respective first and second patterns of well defined optical elements that are quite small in relation to the length and width of the optical assembly. The optical elements of the first pattern have an apex angle formed by a first sloped surface that is larger in an area closer to at least one light input edge of the optical assembly and smaller in another area further away from the light input edge.

Abstract: A spread illuminating apparatus includes LEDs as point light sources fixedly mounted on a flexible printed circuit, a light conductor plate having a light inlet surface, a light reflector plate disposed under the light conductor plate, a light absorbing member constituted by a black tape, and a sheet metal case having walls on all four sides and housing the component members described above. An end of the light reflector plate located toward the LEDs is positioned beyond the light inlet surface of the light conductor plate, and recesses are provided at the end of the light reflector plate. A black tape as a light absorbing member is disposed on the outer surface of the light reflector plate along the light inlet surface, and a light absorbing region is formed such that the black tape is exposed through the recess.

Abstract: A backlight device for a display comprising (1) a side-lit light source, (2) a light guide plate and (3) a turning film comprising a light entry and a light exit surface comprising lenticular elements on the exit surface and prismatic structures on the entry surface, wherein the average values of the parameters of the features and the thickness of the film are selected to provide a peak output angle of ±10° from normal to the light exit surface of the light guide plate and an optical gain of at least 1.25. Also disclosed are methods of making the turning film and a display incorporating the backlight.

Abstract: A double-sided emitting backlight unit has a first light-emitting surface for illuminating a first liquid crystal display panel disposed to face the first light-emitting surface, a second light-emitting surface provided parallel to the first light-emitting surface to illuminate a second liquid crystal display panel that is smaller than the first liquid crystal display panel and disposed to face the second light-emitting surface, and a peripheral surface extending between the first and second light-emitting surfaces and each groove having a light-receiving surface that receives light from a light source. The second light-emitting surface is a prism surface provided with a multiplicity of grooves extending parallel to the light-receiving surface and having a triangular section.

Abstract: A light guide plate has a bottom surface including flat surfaces (FSs) and a plurality of prism patterns (PPs) disposed alternately with the FSs, a light emitting surface (LES) and a light incident surface (LIS). Each FS is at a first distance respectively from the LES and the first distances gradually decrease along a direction away from the LIS. Each PP has a first slanted surface (FSS) and at least a groove having a second slanted surface (SSS) and a third slanted surface (TSS). The two opposite sides of the FSS are spaced out a second distance apart. The two opposite sides of the SSS are spaced out a third distance apart. The specific value of dividing a first orthogonal projection of the second distance on an axis perpendicular to the FSs by a second orthogonal projection of the third distance on the axis is between 0.5 and 1.5.

Abstract: An exemplary backlight module (1) includes a light guide plate (10) and a light source (12) arranged to provide light beams to the light guide plate. The light guide plate includes a light emitting surface (102), a bottom surface (102) opposite to the light emitting surface, and a plurality of reflective structures (104) at the bottom surface. The reflective structures substantially define a plurality of isosceles triangular profiles, and each of the reflective structures maintains a pair of base angles relative to the bottom surface. The base angles of each reflective structure are the same, the base angles of all the reflective structures are the same, and the common base angle is in the range from 45° to 55°.

Abstract: An exemplary light guide plate (23) has a light incident surface (231); at least one side surface (232), the side surface being connected with the light incident surface; a light emitting surface (233), orthogonal connected with the side surface and the light incident surface; and a bottom surface (234) opposite to the light emitting surface. At least one of the light emitting surface and the bottom surface has a plurality of protrusions (235) spaced a predetermined distance, each protrusion having a plurality of grooves (2351).

Abstract: The present invention is directed to a backlight device using light emitting units (7) in which a large number of light emitting diodes (12) are mounted, which comprises a reflection plate (16) for reflecting rays of light which have been emitted from a light emitting unit (11), wherein the reflection plate (16) is composed of a bottom surface reflection plate (16a) for reflecting rays of light emitted from the light emitting units (7) from the bottom surface direction, side surface reflection plates (16b) to (16e) for reflecting rays of light emitted from the light emitting units (7) from respective forward and backward, and left and right side surface directions, and corner reflection plates (16f) to (16i) in which the bottom surface reflection plate (16a) and the side surface reflection plates (16b) to (16e) are connected to cover the respective corner portions, and serves to permit rays of light incident onto a display panel (1) to be uniform to realize uniformity of brightness of the entire surface there

Abstract: A backlight apparatus for directing light toward a display panel and the resulting display device comprises a solid lightguide comprising opposite TIR surfaces, containing a desired pattern of light redirecting surface features located between the TIR surfaces and interrupting one of the TIR surfaces, the features having a refractive index differing from that of the solid material of the light guide. Such an apparatus provides a more even light distribution to the display.

Abstract: A surface light source equipment includes a light source and a light conductive plate having a light outgoing surface from which a light introduced from the light source outgoes. The light conductive plate is configured so tat the outgoing light is spread across substantially the entire surface of the light outgoing surface, and a plurality of patterns for reflection of a light conducted in the light conductive plate is formed on an opposite surface to the light outgoing surface of the light conductive plate. The respective patterns are structurcd such that, as viewed from a direction perpendicular to the light outgoing surface, a light is incident from a substantially fixed direction determined for every pattern. Each of the patterns has an inclined surface on a light incident side. The inclined surface substantially wholly shields both side surfaces of the pattern, as viewed from a direction of light incidence.

Abstract: This display apparatus 10 includes: a light guide plate 1; and a light source 6 provided on an edge face 1a of the light guide plate 1. In the light guide plate 1, a display portion 3 made of a dot-like reflection portion 2 with a reflection surface 2a for reflecting a light beam emitted from the light source 6 to a surface 1b is formed. In the display portion 3, the reflected light beam from the dot-like reflection portion 2 is configured to be visible. This display apparatus 10 is excellent in transparency, has a display portion visually recognizable with ease, and can be manufactured at a low cost.

Abstract: In the lighting device, cylindrical lenses are provided on a reflection surface side of a light guide plate, and the adjacent cylindrical lenses are connected by a concaved curved surface.

Abstract: A backlight module and an application thereof are disclosed. The backlight module comprises at least one light source and a light guide plate. The light guide plate is disposed at one side of the light source, wherein the light guide plate has a reducing region formed at one side of the light guide plate and close to the light source. The thickness of the light guide plate in the reducing region is decreased with the increasing distance away from the light source. The backlight module is applicable to a liquid crystal display (LCD) apparatus.

Abstract: A light guide plate that is divided into an effective section capable of providing uniform surface illumination and a transitional section between the effective section and the point light source includes a light-receiving surface, a light-emitting surface, a light-reflecting surface, and a plurality of light-diffusing structures. The light-diffusing structures are spread on the transitional section, and each light-diffusing structure is in the shape of a part elliptic cylinder having a long axis and a short axis and the front surface of the light-diffusing structure facing the point light source is a part elliptic cylindrical surface.

Abstract: A backlight includes a visible light transmissive body having a light guide portion and a light input portion. The visible light transmissive body primarily propagates light by TIR and includes a light input surface and a light output surface. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. A light source is disposed adjacent to the light input surface and emits light into the light input portion. A specularly reflective layer is disposed adjacent to but not in intimate contact with the opposing side surfaces and reflects more than 80% of visible light incident on the specularly reflective layer.

Abstract: A light-guide board includes a light guide plate made out of an optically transmissive material and having a transparent layer and a back reflecting layer formed integral with the back side of the transparent layer, and a plurality of reflecting baffles respectively extending from the back reflecting layer and embedded in the transparent layer for reflecting light to enhance the intensity of light and the uniformity in light intensity.

Abstract: A backlight module with uniform brightness has a light guide panel (LGP), a diffusing reflector, at least one light source and a diffuser and a prism film. The diffusing reflector is placed on the LGP and has a substrate, a reflective film and multiple diffusing elements. The reflective film is formed on the substrate. Each one of the multiple diffusing elements has an adhesive bed and multiple balls. The multiple balls can be easily pasted or printed separately on the reflective film by using the adhesive bed and provide a uniform diffused light output form the LGP, so the backlight module has a lowered cost and is easily manufactured.

Abstract: A liquid crystal display device includes a liquid crystal display panel. A light guide plate is disposed at a rear side of the liquid display panel. The light guide plate has an exiting surface facing the liquid crystal panel and a reflecting surface opposite to the exiting surface. The reflecting surface has a plurality of grooves. A light source unit is disposed along at least one side of the light guide plate. The reflecting surface includes a first region formed the groove of a first length and a second region formed with groove of a second length shorter than the first length.

Abstract: An illumination device includes a light guide plate having an incident end face and a reflecting surface, and a plurality of light sources provided at the incident end face of the light guide plate. The reflecting surface of the light guide plate has a diffusing pattern for diffusing incident light, the diffusing pattern has a plurality of ridgelines arranged perpendicularly to a propagating direction of the incident light to diffuse the incident light, and the ridgelines are discontinuous in the propagating direction.

Abstract: A solid waveguide comprises opposite TIR surfaces further comprising: a) at least one light input surface for coupling light from a solid state light source; b) at least one mixing section; c) at least one light emitting surface; and d) a desired pattern of light redirecting features located on one TIR surface or between the TIR surfaces.

Abstract: A light-guide plate includes an incident surface, a emissive surface and a reflective surface. The incident surface includes a plurality of light-control patterns formed in sectioned regions of the incident surface. The light-control patterns have shapes different from one another according to the regions corresponding to a position of a light source. The emissive surface is extended from a side of the incident surface. The reflective surface is opposite to the emissive surface.

Abstract: An exemplary light guide plate includes a light input surface, a bottom surface, a light output surface opposite to the bottom surface, and a plurality of dots. The dots are arranged on the bottom surface in series of adjacent columns parallel to the light input surface. A distance between two dot centers of two adjacent dots and sizes of the dots in a same dot column are uniform. Each dot column defines a column axis that passes through dot centers of each of the dots. A distance between two adjacent column axes increases with increasing distance from the first light input surface. A backlight module using the light guide plate is provided.

Abstract: A backlight unit comprises a reflecting plate, a light guide plate disposed over the reflecting plate, and a plurality of optic films disposed over the light guide plate. The backlight unit further comprises a lamp horizontally spaced apart from the light guide plate, and a reflecting film corresponding to an upper portion of a space between the light guide plate and the lamp.

Abstract: A video display for two or three dimensions has a flat liquid-crystal screen which ejects light from the plane at a selectable line. One or, in the case of a 3-D display, several video projectors project a linear image into the plane from an edge. A complete image is written on the screen by addressing the line with appropriate images as it is scanned down the screen. To screen a three-dimensional image, the video projectors, each projecting an image as seen at a slightly different angle, combine to constitute a three-dimensional display which produces a three-dimensional image that is one line high.

Abstract: A backlight module includes at least a light guide board, a reflector film, an optic film, and a light scarce. The light guide board has a light emitting surface on which a plurality of light: converging elements is formed. The optic film has a surface on which a plurality of rib-like micro light guides is formed. Each micro light guide includes a plurality of ridges, which are of different heights and show variation of height. Either a high ridge or a low ridge of the micro light guide is made a continuous left-and-right wavy configuration and/or a continuous up-and-down height-variation configuration. Thus, light transmitting through, the optic film and converged by the micro light guides leaves the optic film in a form that is not very regular so as to facilitate subsequent use of the light in for example a liquid crystal display panel.