Abstract: A selectively light-reflecting sheet (30) includes a prismatic film (1) with parallel prisms (10) on its face, a low-index film (3) on the prisms and a layer (5) on the low-index film, this layer having a substantially flat surface. This results in a low effective index, which means that light incident at steeper angles on the prismatic film (1) will pass through it. This “leaky” effect can be used in conjunction with a reflector sheet (20) in a tapered-waveguide arrangement to construct a lightweight backlight.

Abstract: A gaming machine according to one embodiment of the invention has a rotating reel display device that variably displays a plurality of kinds of identification information required for a game, and a transmissive image display device 30 to enable symbol information of the rotating reel display device to be visually recognized. The transmissive image display device 30 has a liquid crystal panel 34 that displays an image, and a light guide plate 37 that is provided on the back side of the display panel 34 and that irradiates the display panel while having display windows 37L, 37C and 37R formed therein to cause the symbol information of the rotating reel display device to be visually recognized, and prism sheets 40, each of which deflects the introduced light introduced to inside the light guide plate 37 toward the vertex area of the rotating reel, are provided in frame portions 37L, 37C and 37R of the display windows.

Abstract: A liquid crystal panel module, a backlight module and a liquid crystal display (LCD) are provided. The liquid crystal panel module includes a liquid crystal panel and a diffraction grating layer. The liquid crystal panel has a plurality of pixels. The diffraction grating layer is disposed on the liquid crystal panel, and a maximum period of a grating of the diffraction grating layer is smaller than 1/10 of a size of the pixels. The backlight module includes a light guide plate, a light emitting element and a diffraction grating film. A light provided by the light emitting element emits from a light emitting surface of the light guide plate and is bended towards the light emitting element after passing through the diffraction grating film. The liquid crystal panel module and the backlight module can be applied to the LCD together or individually.

Abstract: The planar lighting device includes, in addition to light sources, a light exit plane, a pair of light entrance planes formed on a pair of sides of the light exit plane, and a rear plane composed of a pair of inclined planes formed on a side opposite from the light exit plane such that the light guide plate grows thicker with an increasing distance from the light entrance planes toward the center. The light guide plate contains light scattering particles satisfying Npi>Np, where Npi is the particle density in a region of space within a given range of the light guide plate and Np the density in the other region of space. The planar lighting device with minimized brightness unevenness liable to develop near the light entrance planes when the light exit plane has great dimensions.

Abstract: A LED lighting fixture includes a cavity receiving a light guide board, and a plurality of LEDs mounted within two reinforcing parallel grooves formed in the light guide board along the length of corresponding opposite lateral sides. The light guide board further includes a clear base portion made of a light transmissive material, and a continuous reflective layer disposed over a surface of the clear base portion, the reflective layer having a portion protruding into the clear base portion. Light from the LEDs is injected transversely into the inside of the light guide board for reflection by the reflective layer to be ejected from the lighting fixture through a surface of the light guide board.

Abstract: Light emitting assembly includes an optical conductor having a pattern of deformities on or in front and back sides of the optical conductor to cause light to be emitted from a light emitting surface on at least one of the sides. At least one of the deformities varies, and at least one planar or curved refractive surface is aligned with at least one light source to redirect a portion of the light from the light source entering the optical conductor in a predetermined manner to cause the light emitted from the light emitting surface to pass through an optical film, which redirects the light through a liquid crystal display with no loss.

Abstract: A light guiding device (1) and in particular to a light guiding device that can be used for illumination, backlighting, signage or display purposes is described. The light guiding device (1) comprises a transparent base substrate (2), upon a first surface of which are mounted light sources (3), and a guide substrate (4) arranged so as to encapsulate the light sources (3) upon the first surface. In this way the guide substrate (4) provides a means for guiding light produced by the one or more light sources over the first surface. The incorporation of scattering structures (5) along with appropriate choice of the refractive indices of the various layers provides a highly flexible light guiding device that is typically less than 1 mm thick. The described light guiding device (1) provides particular application as a seven segment display.

Abstract: A light guide plate including a transparent light guide substrate and a micro-structural reflective film is provided. The transparent light guide substrate has a light-emitting surface, a bottom surface opposite to the light-emitting surface, and at least one light incident surface connecting the light-emitting surface and the bottom surface. The micro-structural reflective film is disposed below the bottom surface of the transparent light guide substrate and includes a micro-structural layer and a reflective material layer. The micro-structural layer has a plurality of micro-structures, and the reflective material layer covers the micro-structures of the micro-structural layer. Only top ends of the micro-structures and the reflective material layer are laminated on the transparent light guide substrate, such that there is an air gap between the transparent light guide substrate and the micro-structural reflective film. Furthermore, a light-emitting apparatus having the light guide plate is also provided.

Abstract: Light redirecting film systems comprise a backlight having deformities that cause a majority of the light entering the input edge of the backlight to be emitted from a light output surface of the backlight. In close proximity to the light output surface is a light redirecting film that has a pattern of individual optical elements of well-defined shape to redistribute the light emitted by the light output surface toward a direction normal to the film.

Abstract: A light guiding structure for connector includes a light-guiding unit having more than one light guiding post, and each of the light guiding posts having a light-input end and a light-output end; and a shielding unit enclosing an outer side of the light guiding posts. When the light guiding structure is mounted on a connector case for guiding light, light beams propagating in different light guiding posts are isolated from one another by the shielding unit. Therefore, light beams can be stably and exactly guided by the light guiding posts without light loss and mutual interference to thereby avoid error determination by a user.

Abstract: Light guides of various shapes are configured to adjust the angle of the individual light rays in a bundle of light within the light guide so that the angle of the respective rays are adjusted towards an acceptance angle of a hologram embedded within the light guide. The hologram embedded in the light guide is configured to eject individual rays towards the display elements when the respective rays are within a range of acceptance angles.

Abstract: A backlight unit includes a light guide panel to guide entering light, a light source disposed on at least one side of the light guide panel to emit light, and a reflecting sheet disposed on a surface of the light guide panel to reflect the entering light toward a light emitting plane of the light guide panel, and includes a plurality of reflecting areas which have different reflectance, where a reflecting area of the plurality of reflecting areas which encounters a relatively large amount of the entering light has a higher reflectance than that of a reflecting area of the plurality of reflecting areas which encounters a relatively small amount of the entering light.

Abstract: Optical devices according to the present invention include a multilayer optical film in which at least one of the layers comprises an oriented birefringent polymer. The multilayer optical film exhibits low absorptivity and can reflect light approaching at shallow angles as well as normal to the film.

Abstract: Direct-lit backlights and associated methods and components are disclosed in which a transflector that partially transmits and partially reflects incident light is shaped to form at least one concave structure facing a back reflector of the backlight. This provides at least one recycling cavity therebetween, the at least one recycling cavity substantially filling the output area of the backlight. At least one light source is disposed behind the output area to inject light into each cavity, and can be positioned in the recycling cavity or behind an aperture in the back reflector. The cavities are preferably shallow and wide, having a width-to-depth ratio of at least 5 or 10, and can provide uniform brightness and color at the output area with sparsely distributed light sources and in a thin profile backlight.

Abstract: Optical assembly includes a light source adjacent a light input edge and generally parallel and planar first and second surfaces each comprising respective patterns of well defined optical elements that are quite small in relation to the length and width of the optical assembly. At least some of the optical elements of each pattern include a respective sloped surface for directing at least some light emitted from the light source. The respective slope angle of the sloped surface of at least some of the optical elements of one of the patterns is different from the respective slope angle of the sloped surface of at least some of the optical elements of the other pattern such that more of the light is emitted from one of the surfaces than is emitted from the other surface.

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

Abstract: Disclosed is an organic electroluminescent device comprising a first electrode, a second electrode, at least one organic layer containing a luminescent layer and disposed between the first electrode and the second electrode, a transparent substrate and a prism structure disposed between the first electrode or the second electrode and the transparent substrate, wherein the prism structure is disposed such that the apexes of the prisms face the transparent substrate side and the coefficient of variation in the pitch of the apexes of the prisms is 1% or more.

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: An optical element covering member is provided which can suppress degradation in display performance caused by warping and undulation. The optical element covering member includes at least one optical element, a support medium supporting the optical element; and a covering member covering the optical element and the support medium. In the above optical element covering member, the covering member has a Vicat softening point of more than 85° C., and at least one surface of the covering member, which covers the support medium, has a coefficient of thermal expansion in the range of 85% to 160% of the coefficient of thermal expansion of the support medium.

Abstract: Image display optical systems are disclosed that extend the angle of view longitudinally and transversely while saving space. The image display optical system includes a prism-shaped substrate transparent to an image-carrying light flux to be projected to a viewing eye, an introduction unit that guides the image-carrying light flux to a propagation path through which the image-carrying light flux propagates in a direction in which the image-carrying light flux from the outside enables internal reflection at least at three surfaces including at least one side of the substrate, and an output unit that guides the image-carrying light flux propagating through the substrate from the substrate to the viewing eye. By internally reflecting the image-carrying light flux at all the sides, i.e.

Abstract: A planar light source has a light emitting source, and a light guide plate for receiving light beams emitted from the light emitting source at a front side thereof and changing direction of the light beams, discharging the light beams from an upper surface thereof. A first anisotropic diffusion surface is formed on a lower surface of the light guide plate, and a reflection member is provided on the first anisotropic diffusion surface. The first anisotropic diffusion surface is hologram diffusion surface or a hairline diffusion surface.

Abstract: A heads-up display comprises a monochrome display device for generating an image and an optical device for generating a virtual image from the image of the display device. The monochrome display device comprises a display and a backlight for illuminating the display from its backside. The backlight comprises a first light source emitting light of a first color, a second light source emitting light of a second color, a first light guide coupled to the first light source, and a second light guide coupled to the second light source. The first and second light guides are disposed in such close juxtaposition behind the display so that they illuminate together the entire backside of the display and illuminate a first region of the display associated with the first light guide with the first color and a second region of the display associated with the second light guide with the second color.

Abstract: The present invention relates to a brightness enhancement film and a backlight module having the brightness enhancement film. The brightness enhancement film includes first micro-reflectors and second micro-reflectors. The cross-section of each of the first and second micro-reflectors is a triangle having two same or different base angles and a wavy crest line. The widths of the first and second micro-reflectors vary along with the valleys and peaks to broaden or to narrow with respect to two sides thereof such that the neighboring lines between the first and second micro-reflectors are wavy. The backlight module is coupled with the brightness enhancement film. This enhances brightness, illuminates evenly, and avoids a moire effect.

Abstract: An exemplary liquid crystal display (200) includes a liquid crystal panel (210) and a backlight module (220). The backlight module is positioned for illuminating the liquid crystal panel, and includes a light source (222) and at least one optical member (221). The at least one optical member includes absorbing material for absorbing light beams having wavelength more than 700 nanometers, such that when light beams provided by the light source transmit through the at least one optical member, at least some of the light beams having wavelengths more than 700 nanometers are absorbed by the absorbing material.

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

Abstract: The present invention provides a light guide panel and a backlight module using the light guide panel. The light guide panel is disposed corresponding to a light source module of the backlight module. The light guide panel mainly comprises a plate, a plurality of microstructures and a plurality of protrusions. The plate is disposed close to the light source module and includes a microstructure surface. The microstructures and the protrusions are disposed on the microstructure surface, and the heights of the protrusions are greater than those of the microstructures, and a plurality of the microstructures are disposed between the adjacent protrusions.

Abstract: A reflector laminate, and backlights and displays incorporating such reflector laminates are disclosed. The reflector laminate includes a substrate and a reflector that are adhered together by a plurality of adhesive protrusions. The adhesive protrusions provide for a plurality of voids between the reflector and the substrate, so that a free reflector surface is adjacent to an air gap between the reflector and substrate. The reflector can include a multilayer interference reflector, and the presence of the air gap ensures high reflectivity for the laminate. The reflector can be adhered to a solid lightguide, a frame enclosing a portion of a backlight, a frame enclosing a hollow lightguide cavity, or an optical sheet positioned at the output surface of a backlight.

Abstract: A backlight assembly and a display device including the backlight assembly are provided for one or more embodiments, where the display device is slim, lightweight, and requires low manufacturing costs because the device integrates a receiving container and a light generating unit cover member. According to an embodiment, the backlight assembly includes a first light generating unit, a wire electrically connected to the first light generating unit, a first fixing member including a groove to fix the first light generating unit and a wire outlet, and a receiving container comprising a light generating unit cover member. The first fixing member includes a protruding portion extending outwardly from the receiving container and the wire outlet formed on the protruding portion.

Abstract: An optical film with a plurality of micro structures which are capable of collecting incident light to the frontal and normalized view angle of the optical film for reducing the chance of incident light returning to light guild plate so as to enhance light collecting efficiency is provided in the present invention. In an embodiment, the optical film is combined with a flat light source so as to form a backlight system. By means of the merit of the optical film, the quantities of the optical film can be reduced so that the backlight system can have characteristics of thin thickness and low production cost.

Abstract: A backlight module (10) includes a light source and a light guide plate (12). The light source defines a number of light units (11) for emitting light beams. The light guide plate includes a light incident surface (121), an emission surface (123) adjacent to the light incident surface, a bottom surface (124) opposite to the emission surface, a plurality of side surfaces (122) between the emission surface and the bottom surface, and a plurality of diffusion units (13) formed on the bottom surface. A dot size of each diffusion unit/dot is inversely proportional to a summation of the sum of reciprocals of squares of distances between the diffusion unit and each of the light units and the sum of reciprocals of squares of distances between the diffusion unit and corresponding images of each of the light units formed, respectively, by the side surfaces.

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: The present invention discloses a system for displaying images, comprising: a light source; a panel including an active area and a peripheral area; a light guide being located at one side of the light source and under the panel, the light guide having a first side facing the panel and a second side opposite to the first side; and a plurality of optical foils, each foil disposed on the first or second side of the light guide, wherein at least one of the optical foil has a hotspot-reducing area in the peripheral area in order to reduce or eliminate a hotspot in front of the light source, wherein the hotspot-reducing area is a cut-out area, a covered area, or combinations thereof.

Abstract: A method of producing an edge-light type light guide plate having a light exiting surface and a light reflecting surface having light reflective dots formed thereon in a scattered fashion. The method includes (a) producing a first prototype of the light guide plate having primary dots formed on the light reflecting surface, (b) examining optical characteristics of the first prototype relating to light exiting from the light exiting surface thereof, and (c) producing a second prototype of the lightguide plate when the examined first prototype exhibits unsatisfactory optical characteristics. The second prototype has primary dots that are the same as the primary dots of the first prototype in size and distribution, and secondary dots arranged between the primary dots in at least part of the light reflecting surface. The steps (b) and (c) are repeated until a prototype is produced which exhibits satisfactory optical characteristics.

Abstract: Color non-uniformity due to LED light sources of a liquid crystal display (LCD) device is improved. A light quantity control film is arranged between an LED source and the entrance surface of a mixing light guide plate. This light quantity control film is arranged in the part which reduces the quantity of light of the LED with the strongest light quantity among a plurality of same colors.

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: 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: A back light module includes a frame body, a back board, a reflecting sheet, a light-guiding plate, a lighting member, an optical film and an upper cover. The frame body and the back board are formed integral. The frame body has its outer peripheral edge formed with lots of radiating fins, and the back board and the radiating fins are respectively disposed with numerous radiating grains for increasing the heat dissipation area and elevating heat dissipation effect of the back light module, able to effectively lower the working temperature and prolong the service life of the lighting member, and elevate the working efficacy of the lighting member and economize cost.

Abstract: In an optical sheet which is used for light control illumination in a backlight unit for a display, in order from an incident side of an illuminating light, there are provided at least a light scattering layer which scatters the illuminating light toward an outgoing surface side, an adhesion layer or an adhesive layer, a light reflection layer which reflects light scattered by the light scattering layer toward the light scattering layer side, and a lens sheet whose flat rear face is fixed to the other side of the light reflection layer, and in which a plurality of unit lenses are disposed on the surface. Opening portions corresponding to the respective unit lenses one-to-one are provided to the light reflection layer, and thickness of the adhesion layer or the adhesive layer is thinner than that of the light reflection layer.

Abstract: A reflection type display apparatus has a front light unit (FLU), and includes a display panel, a light guide disposed on the upper surface of the display panel, a light transparent adhesive layer attaching the lower surface of the light guide to the upper surface of the display panel, and a light source located at a side of the light guide for emitting light to the light guide. A protection window covers the light guide and the light source. By covering the display panel installed on the lower surface of the protection window and the light guide with a moisture-proof and light-shield film, moisture-proofing and light-shielding effects are obtained simultaneously. Further, by forming a light absorption layer at the edge of the light guide adjacent to the light source, generation of a hot spot at the edge of the light guide may be inhibited.

Abstract: A display comprises a light source and a light redirecting polymeric film containing a structured surface on at least one side of the film and bearing a polymeric coating over at least part of the structured surface wherein the coating exhibits a variable thickness.

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: To prevent, in a backlight where light emitting diodes are arranged on a side surface of a light guide plate, light leakage from a reflection sheet and reduce non-uniformity of emission light from the backlight. In a liquid crystal display device that includes a backlight that irradiates a liquid crystal panel with light, LEDs are disposed as light emitting elements on a light guide plate that is disposed in the backlight, a reflection sheet that comprises a multilayer film is disposed on a bottom surface of the light guide plate, projections are disposed by sandblasting on the bottom surface of the light guide plate in the vicinity of the LEDs, and tight adhesion between the reflection sheet and the light guide plate is prevented. In the vicinity of the LEDs, in order to counter light non-uniformity, reflecting grooves are not disposed and it is a mirror surface, but tight adhesion can be prevented by disposing the projections.

Abstract: A lighting device used in an image forming apparatus includes point light sources that emits rays; and a condensing body that is arranged in a direction of the rays emitted from the point light source and that condenses the rays on a surface of a document, which is placed on a contact glass, within a reading width in a sub-scanning direction of the document. The condensing body is arranged in a direction in which angles of all rays, which pass through the condensing body, are smaller than a critical angle of total reflection on the contact glass.

Abstract: The invention relates to a display comprising a light source and a light redirecting polymeric film containing a structured surface on at least one side of the film and bearing a discontinuous population of adherent beads bonded to the structured surface.

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: An exemplary backlight module (20) includes a light guide plate (22) having a light incident surface (224), a plurality of light sources (23) adjacent to the light incident surface, a frame (24) for receiving the light sources and the light guide plate, and a colored reflective structure (220) disposed in the frame. Some of the light beams emitting from the light sources are transmitted to the colored reflective structure and converted to reflected light beams having a corresponding color. The reflected light beams further mix with light beams emitting from the light sources and generate light beams in desired color system. A liquid crystal display (200) using the backlight module is also provided.

Abstract: A direct-type backlight module includes a light-guide plate. The light-guide plate has a first surface and a second surface opposite the first surface. The first surface has at least one first groove. The backlight module may also include at least one light source. The light source corresponds to the first groove so that light emitted from the light source is reflected by the first groove. One or more optical films may be disposed on the first surface of the light-guide plate and a reflector may be disposed below the second surface of the light-guide plate. With the light-guide plate in place, the overall thickness of the backlight module is reduced, and the lamp mura is avoided.

Abstract: A display system combines the principles of total internal reflection and halftone reflection. The display system includes a light guide, a light-reflecting see-through image disposed on the surface of the light guide, and a light-blocking see-through layer disposed over the image. A person viewing the light-blocking layer at a certain distance can see through the light guide without seeing the image. The display system can include a pair of eyeglasses that can provide self-illumination for night reading or serve as a hands-free flashlight. Also, novelty glasses can emit different colored lights as well as colored, lighted images. The display system can also include one-way see-through windows that emit lighted text and images for signage and advertising.

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 luminous body comprises a light guiding body, a coating layer formed by applying a binder paint where a reflecting material is mixed into and dispersed in a binder onto a surface of the light guiding body, and a reflecting layer made of a pigment layer which is formed by applying a pigment containing binder paint where a pigment is mixed into and dispersed in a binder onto the coating layer, wherein the average particle diameter of the mixed beads is 1 ?m to 80 ?m, and the pigment is opaque and made of a light reflecting material.