Abstract: A light guide may be made from a plurality of substantially planar, light transmissive arms paralleling and radiating from a common axis. The planar arms in combination define a common cavity extending along the axis sufficiently large to envelope a light source. At least one arm has an input window facing the common cavity, a reflective wall aligned with respect to the common cavity and an input window. Light received from the direction of the common cavity through the input window is generally reflected in an axial direction. The light guide has an output window extending from an intersection point with the reflective wall towards the axis. The plurality of arms is preferably supported on a base.

Abstract: A backlight unit is suitable for emitting uniform surface light. The backlight unit comprises a lamp emitting light to an incident light side of a light guide plate, and a lamp housing enclosing the lamp and including a heat sink.

Abstract: A planar light guide (4) having a light entrance end face (41) receiving light from a spot-like primary light source and a light exit face (43) outputting the entered light, wherein a plurality of lens arrays (42) are formed, at least a part of the light entrance end face, to extend from the light exit face toward the opposite face substantially in parallel with each other. The lens array (42) has an asymmetric cross-sectional shape defined by a combination of at least two different curves. When the light guide (4) is combined with a primary light source disposed oppositely to the light entrance end face (41) and a light deflecting element disposed oppositely to the-light exit face (43), a high quality planar light source having a high uniformity and no variation in luminance is provided even when a relative small number of spot-like light sources are used as the primary light source.

Abstract: A backlight module includes: a transparent panel having a grooved surface and a planar surface opposite to the grooved surface, the transparent panel being formed with a plurality of elongate grooves that are indented from the grooved surface and that are aligned in a first lateral direction, each of the elongate grooves extending in a second lateral direction transverse to the first lateral direction, and having an open end; a board attached to the grooved surface of the transparent panel to cover the open ends of the elongate grooves; a reflecting material provided on one of the planar surface of the transparent panel and the board; and a plurality of light emitting sources disposed respectively in the elongate grooves for radiating light.

Abstract: The present invention relates to a displaying unit using a display panel and provides a reinforcing configuration that reinforces an optical guide plate without impairing a degree of freedom in the back space of the optical guide plate. A displaying unit includes an optical guide plate that guides light of a light source for display on a display panel and includes a reinforcing member (reinforcing beam) that bridges over the optical guide plate between side surfaces in the incident direction and the crossing direction of the light.

Abstract: A display apparatus includes a panel, a first light source, a second light source, a first light guide plate, a second light guide plate, and a processor. The panel includes a first area for displaying a first data and a second area for displaying a second data. The first light guide plate corresponding to the first area reflects the light provided by the first light source to the first area. The second light guide plate corresponding to the second area reflects the light provided by the second light source to the second area. The processor determines the states of the first light source and the second light source. The first or second light source is not operated all the time so as to conserve the power.

Abstract: A backlight module (70) includes a light guide plate (72), a light source (74), a micro reflector array (723), and a reflector (76). The light guide plate includes a light input surface (722) facing the light source, a light output surface (724) adjacent to the light input surface, and a reflective surface (726) opposite to the light output surface. The light source and an emitting surface (744) thereof both face the light input surface. The micro reflector array and the reflector are configured for cooperatively coupling a first portion of the light beams into the light input surface via any corresponding microgap and reflecting a second portion of the light beams into the light guide plate at a location distant from the light source.

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: A light guide plate has a light exit plane and a light entrance plane arranged on the periphery of the light exit plane. Light incident on the light entrance plane is outputted from the light exit plane. The light entrance plane includes a plurality of first end surfaces and a plurality of second end surfaces protruding in an external direction beyond the first end surfaces in plan view. The first end surfaces and the second end surfaces are alternately arranged along the periphery of the light exit plane.

Abstract: A light source module of scanning device includes a light guide rod and a light emitting diode. The light guide rod has a top surface, a bottom surface and two end portions. The top surface and the bottom surface are disposed opposite to each other. The light emitting diode is disposed adjacent to one of the end portions.

Abstract: A light emitting module including a light source set and a light guide member is provided. The light source set is suitable for providing a light and the light guide member is disposed above the light source set. The light guide member has a top surface, an opposite light incident surface, a first reflection surface, and an opposite light emergent surface connected between the top surface and the light incident surface. The top surface has a first concave surface serving a second reflection surface suitable for reflecting the light. Besides, a portion of the light reflected by the second reflection surface emerges from the light emergent surface through the reflection of the first reflection surface, and the other portion of the light directly emerges from the light emergent surface. Additionally, a surface light source device having the light emitting module is also provided.

Abstract: A lighting device includes a board mounting a light source, a first hole provided in the board, a projecting part protruded inside the first hole from a periphery of the first hole, a light guide which receives a light emitted from the light source through a light receiving plane, and transmits the light from a light transmitting plane, and the first protrusion which is integrally formed in the light guide and is inserted into the first hole, wherein the projecting part presses a side of the first protrusion so that the board can move toward the light receiving plane.

Abstract: A light emitting device includes a light source and a light guide body having a light guiding surface from which light emitted from the light source is received and having a light emitting surface from which the received light is emitted. A plurality of rows of light source arrays each formed by a plurality of the light sources are provided on the light guiding surface.

Abstract: A light guide plate a light incidence surface, a light-emitting surface joining with the light incidence surface, a diffraction grating having a plurality of grating slots formed on the light-emitting surface, and a bottom surface on an opposite side of the light guide plate to the light-emitting surface. The diffraction grating converts light that has been dispersed by reflection and refraction into plane parallel light thus increasing brightness.

Abstract: A backlight module includes a lamp tube, a light guide plate and a light guide unit. The light guide plate has a light incident side. The light guide unit is in contact with the light incident side of the light guide plate. The light guide unit and the light incident side cooperatively form a receiving tunnel. The lamp tube is disposed in the receiving tunnel. The light guide unit is detachable from the light guide plate. Another backlight module is also provided. The present backlight module can be assembled conveniently and quickly, and has a relatively high light energy utilization rate.

Abstract: A display system (300) that includes a first display (302) and at least a second display (304). A light guide (330) can be positioned between the first display and the second display. Further, a light valve (342) can be positioned between the light guide and the second display. The light valve can be operable between a first state in which the light valve is substantially optically clear and a second state in which the light valve is not substantially optically clear. For example, the light valve can be substantially opaque in the second state. The display system (300) can be integrated into a display device (500). The display device can be a hinged display device.

Abstract: A light emitting diode (LED) device and the applications are provided, wherein the LCD device comprises a light emitting direction and a cross-section perpendicular to the light emitting direction, wherein the cross-section has a first height perpendicular to the light emitting direction and a light emitting area having a second height perpendicular to the light emitting direction, the second height is substantially shorter than 70% of the first height.

Abstract: A light guide device is used in a back light module that more uniformly mixes different colored light emitted from a plurality of LEDs and transfers the mixed light to a display panel, wherein a light loss can be minimized during the light mixing process and the light can be more uniformly mixed. A light guide device is disclosed for mixing different colored light emitted from a plurality of light emitting diodes (LEDs) and guiding the mixed light to a display panel, wherein the light guide device comprises a light guide portion in the form of a plate arranged at a rear of the display panel; and a light mixing portion formed integrally with the light guide portion and including a light incidence surface adjacent to the plurality of LEDs and a light mixing area for mixing the light with difference colors incident through the light incidence surface.

Abstract: To provide a rod-like light guide and a line lighting device including the rod-like light guide, both of which are easy to include in an image reading device, a contact-type image sensor and an image reading device. For instance, a protruding portion having a flat or curved surface is formed by grinding an end face of a rod-like light guide in a longitudinal direction while leaving at least 80% of the surface area of the end face, and a reflective surface is formed by bonding a heat transfer film to the protruding portion. Thus, even if a portion of the protrusion portion melts when performing thermal processing on the heat transfer film, the portion will not jut out beyond a cross-sectional area of the rod-like light guide, and the rod-like light guide can be easily contained in a case.

Abstract: A light guiding plate is provided on the obverse side of a display for displaying a display image while varying the display image. Unevenness is formed at a predetermined position at a reverse surface of the light guiding plate. A light emitting element is disposed at the side surface of the light guiding plate in such a manner as to introduce the light to the light guiding plate. Alternatively, an uneven portion in conformity with a pattern of a desired display image may be formed at a reverse surface of the light guiding plate, and a light emitting element is disposed at the side surface of the light guiding plate in such a manner as to introduce the light to the light guiding plate.

Abstract: A light guide device has a body and multiple grooves. The body has a radiation surface and a flat surface formed oppositely to the radiation surface. The grooves are formed inward from the flat surface into the body, and each groove is cambered, is separated from adjacent grooves with intervals and has a curvature. The grooves in a center segment of the body have the same curvature larger than the curvatures of other grooves. When light beams emit to the grooves, the light beams are refracted toward and outward the radiation surface by the grooves. Larger curvature of the groove results in smaller scatter angle of the light beams refracted by the groove. The refracted light beams having smaller scatter angle result in higher illumination.

Abstract: A backlight unit using optical fibers includes a light source, an optical medium tube having a light incident surface to optically couple light from the light source into the optical medium tube and a light emitting surface to emit light guided by the optical medium tube, a light emitting plate including plurality of optical fibers having first ends optically coupled to the light emitting surface of the optical medium tube to receive light from the light emitting surface, where the first ends of the optical fibers are substantially parallel and coplanar with each other.

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: An illumination module is provided in the invention. The illumination module includes a light source having a plurality of light emitting elements arranged in a linear array and a light guide device. The light guide device receives light from the light source and generates uniform light which is transmitted onto an article to be scanned, has a longitudinal direction, and includes a diffraction structure and a reflection portion. The diffraction structure has a shape inducing light to be scattered and deflects the scattered light toward the longitudinal direction. The reflection portion reflects the light scattered and deflected by the diffraction structure, and is inclined to have an inclined angle with the light propagating direction. In addition, the reflection portion is formed on the diffraction structure or apart from it.

Abstract: An electro-optic device includes a light source, a light guide panel configured to output light beams emitted from the light source through a light exit plane; a display panel illuminated by the light beams outputted from the light exit plane of the light guide panel passing therethrough; a prism sheet provided between the light guide panel and the display panel and formed with prisms having a triangular cross-section on a surface on the side of the display panel; and a light diffusing member provided between the light guide panel and the prism sheet. The prisms each having a ridge line extending substantially vertically to the direction of emission of the light beam emitted from the light source, and an apex angle is set to a range from 60° to 70°.

Abstract: A light guide member for guiding light may include a first pattern on a first side of the light guide member, the first pattern may include a plurality of first features extending along a first direction, and a plurality of second features extending along a second direction, wherein the first direction crosses the second direction, the first feature has a first feature size, the second feature has a second feature size, and the first feature size may be less than the second feature size.

Abstract: Area light source 10 used for LCD device 1 includes light guide 12 and LED devices 18 and 19 disposed at a side portion of light guide 12. A light receiving portion at a side edge portion of light guide 12 is provided with prisms 24 and 25 of saw-tooth prism group 22. Apex angles of prisms 24 and 25 are set to be more acute up to the middle point of prisms 24 and 25 as prisms 24 and 25 are farther from LED devices 18 and 19, respectively.

Abstract: A signalling or lighting apparatus comprising at least one light source defining a main emission direction, together with at least one elongate light guide, one end of which is lit by the light source, the light guide being adapted to diffuse the light transversely along its length. At least in the vicinity of the light source, the guide has a longitudinal axis which is disposed transversely to the main emission direction, in such a way that some of the light flux from the light source provides a primary signalling or lighting function with a relatively high luminous intensity, and a second signalling or linear lighting function, of lesser light intensity, is provided along a length of the light guide.

Abstract: Provided is a backlight unit. The backlight unit includes a frame, a light guide plate, a light absorption adhesive member, and a white light source. An opening is formed in the frame. The light guide plate is attached to the frame and formed larger than the opening. The light absorption adhesive member attaches the light guide plate to the frame and absorbs incident light. The white light source provides white light to the light guide plate.

Abstract: A backlight module (20) includes a light guide plate (21) and two light emitters (22). The light guide plate includes an emitting surface (212), a bottom surface (213) opposite to the emitting surface, a plurality of side surfaces interconnecting the emitting surface and bottom surface, and an incident surface (211) disposed at a corner portion thereof adjoining to two adjacent side surfaces. The light guide plate defines a through hole (23) in the corner portion adjacent to the incident surface. The two light emitters are adjacent to and face the incident surface.

Abstract: A light guide plate of the invention has a plurality of unit light guide plates that are formed of a transparent resin material and which are joined together. Each of the unit light guide plates has a flat rectangular light exit surface and a back surface that is opposite the light exit surface and which has a parallel groove formed in generally a center and parallel to a side of the rectangular light exit surface. The light guide plate is used with a linear light source fitted in the parallel groove, satisfying the inequality (L0/280)2·k(14T2+710T)·(?0.65 log S+1.9)?10, where L0 is the length (mm) of the light guide plate, k is the linear expansion coefficient [/° C.] of the resin material, Ts is the surface temperature [° C.] of the linear light source that has become stable, S is half of the cross-sectional area [mm2] of the unit light guide plate as it is cut through a plane perpendicular to the parallel groove, and T=Ts ?25.

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 lamp system has a first light source which radiates light of a first chromaticity coordinate and a second light source which radiates light of a second chromaticity coordinate. The lamp system also includes an optical component for additively mixing the light of the two light sources. The optical component includes an optical waveguide with two different kinds of scattering centers for mixing the light as desired.

Abstract: A multilens member is provided, the multilens member including a base member which has light transmissivity; a plurality of first lenses which are formed on the base member; and a plurality of second lenses which are formed on the plurality of first lenses and which are joined to the plurality of first lenses on first surfaces opposed to the base member; wherein the first surfaces of the second lenses have junction which are joined to the first lenses and overhang which overhangs outwardly from the junction portions. That is, the multilens member having the overhang shape is provided. Accordingly, it is possible to provide the optical member which improves the optical performance of an illumination apparatus and which realizes the thin size and the low cost of the illumination apparatus and a liquid crystal display apparatus.

Abstract: It is an object of the present invention to provide a terminal device which is not limited in the degree of freedom in terms of case design and which allows easy visual recognition of light emission for indicating a specific state even when it is carried in a chest pocket. The terminal device comprising: a stationary case (11); a movable case (13) provided on the stationary case (11) through the intermediation of a hinge (12) to allow opening and closing; and light emitting device (14) for indicating a specific state through light emission, in which the light emitting device (14) is provided at the hinge (12) side end of the stationary case (11) or the movable case (13).

Abstract: An enhanced light fixture containing a volumetric, anisotropic diffuser to control the spatial luminance uniformity and angular spread of light from the light fixture is disclosed. The anisotropic diffuser provides increased spatial luminance uniformity and efficient control over the illuminance such that power reductions, reduced cost or reduced size may be achieved. The anisotropic diffuser contains one or more regions of asymmetrically shaped light scattering particles. The spread of illumination of light from a light emitting source can be efficiently controlled by using a thin, low cost, volumetric, asymmetric diffuser to direct the light in the desired direction. This allows the reduction in number of light sources, a reduction in power requirements, or a more tailored illumination. When the anisotropic diffuser is used in combination with a waveguide to extract light, the light is efficiently coupled out of the waveguide in a thin, planar surface.

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

Abstract: A light guide includes an extractor layer and a substrate layer. Each layer has a first major surface and a second major surface. The second major surface of the extractor layer is in contact with the first major surface of the substrate layer, and the first major surface of the extractor layer has a plurality of discrete light extractors capable of extracting light propagating in the light guide such that light is extracted in a predetermined pattern over the first major surface of the extractor layer. In some embodiments, at least one of the extractor layer or substrate layer is flexible.

Abstract: An illumination device according to the present invention includes a light source; and a lightguide element including an incidence surface for receiving light emitted from the light source and an outgoing surface from which the light incident from the incidence surface goes out. The lightguide element includes a polarization selection layer for causing light of a specific polarization direction (first polarized light), among the light incident from the incidence surface, to selectively go out from the outgoing surface, and a polarization conversion layer for converting second polarized light, polarized in a different direction from that of the first polarized light, into the first polarized light. The polarization selection layer reflects the first polarized light substantially only toward the outgoing surface.

Abstract: The disclosed relates to a light-guide-sheet used in operation panel of a various electronic equipment, and a movable-contact-unit and a switch using the same, which have a simplified structure free from uneven illumination and a cheap cost price. Therefore, the light-guide-sheet is provided with the light-guide-member including an inlet, a generally strip-shaped guide-path coupled with the inlet, and generally circularly and irregularly shaped light-emitters coupled with the guide-path, each formed from a polymer having an index of refraction different from that of base-film and formed in grooves provided on a base-film.

Abstract: A light guide assembly and method of forming the assembly. The light guide assembly includes an elongate light guide having an optically smooth surface for propagating light along its length and a light emitting region extending along at least a portion of the light guide length. The light emitting region has light extraction structures extending into the elongate light guide to extract or reflect light radially from the light guide. The assembly also includes a light source connector coupled to the light input end of the light guide. The light input end has primary encoding orientation geometry. The light source connector has a first end with secondary encoding orientation geometry, configured to mate with the primary encoding orientation geometry, and an opposing second end configured to accept a light source.

Abstract: A hot spot filter for a light guide is created by taking an image of the light output pattern of an illiuminated light guide. The hot spot filter may be a film, a layer, or an additional liquid crystal display dedicated to attenuating bright spots from the light guide. The hot spot filter may be incorporated into the image display by adjusting the grey scale of individual pixels to provide sufficient compensation.

Abstract: A backlight module including light guide plate, light source disposed facing a light-in surface of the light guide plate, and optical film; both of bottom surface and light-out surface of the light guide plate being respectively disposed with a same type or two different types of a dimming structure to change traveling routes of streams of light emitted from the light source upon entering into the light guide plate through the dimming structure without developing bright-dark-bright bands so to achieve illumination uniformity performance of the light source.

Abstract: A backlight assembly includes a light source, a light-guiding member, a mold frame and a printed circuit board (“PCB”). The light source generates light. The light-guiding member guides the light generated from the light source. The mold frame receives the light-guiding member. An opening is formed through a side of the mold frame. The PCB drives the light source, and includes an extension portion extending through the opening of the mold frame.

Abstract: An exemplary backlight module (2) includes a light guide plate (23), a light source (25), a light source driver (27), and a frame (21). The light source is provided adjacent to the light guide plate. The light source driver is directly connected with the light source. The frame includes an upper frame (211) and a lower frame (212). The upper frame and the lower frame cooperatively form a space to accommodate the light guide plate, the light source, and the light source driver.

Abstract: A lightguide arrangement including a substantially thin, lightguide for transporting and coupling light. At least one light source is coupled to the lightguide. A plurality of micro-optic surface relief forms are arranged on the lightguide. The lightguide is configured to produce one or more active indicative and/or decorative illumination effects via interaction between the one or more light sources and the plurality of micro-optic surface relief forms. A keypad assembly including the lightguide and uses of lightguide constructions.

Abstract: A surface light source apparatus includes a primary light source (1), an optical guide (3) for guiding light emitted from the primary light source and having a light incoming surface (31) and a light outgoing surface (32), a light deflection element (4) arranged adjacent to the light outgoing surface of the optical guide and having a light incoming surface (41) and a light outgoing surface (42), and a light diffusion element (6) arranged adjacent to the light outgoing surface of the light deflection element. The light incoming surface (41) of the light deflection element has a plurality of prism strings arranged substantially parallel to each other and each having two prism surfaces. At least one of the prism surfaces of these prism strings has a prism surface consisting of at least two planes having different inclination angles. As the plane approaches the light going surface, the inclination becomes larger.

Abstract: A light collection system includes at least one light source, a light tunnel having reflective walls and a collimating plate at the light output end of the tunnel. The collimating plate includes an optical element array. The element array receives the light emitted from the light source and outputs part of the light at a desired cone angle and reflects the remainder back into the tunnel toward the light source. The light is “recycled” in the tunnel until the light either exits the collection system through the collimating plate or gets absorbed within the collection system.

Abstract: A backlight module includes a base, a plurality of point light sources distributed on the base and a light guide plate. Each of the point light sources includes a transparent cover and a light-emitting unit received in the cover. The transparent cover includes an inwardly curved light emitting top surface for emitting light from the light-emitting unit. The light guide plate includes an incidence surface disposed facing the point light sources, and an emission surface opposite to the incidence surface. The incidence surface includes a plurality of light diffusion areas spatially corresponding to the respective point light sources.

Abstract: A light guide member for guiding light received from a light source unit, the light source unit illuminating light toward the light guide member, the light guide member may include a plurality of first grooves on a first side of the light guide member, the first grooves extending along a first direction, and a plurality of first projections projecting from surfaces of the first grooves.