Abstract: An optical film capable of improving luminance of a display unit, in which a viewing angle in the horizontal direction of emitted light of the display unit is wider than a viewing angle in the vertical direction and the emitted light of the display unit has a polarization component in the vertical direction viewable by polarized sunglasses, an illumination system including the same, and a display unit including the same are provided. The optical film includes a plurality of three-dimensional structures extending in one direction and arranged sequentially in a direction crossing the one direction. The three-dimensional structures contain a liquid crystalline polymer having orientation, and have refractive index anisotropy in which refractive index in the extending direction of the three-dimensional structures is smaller than refractive index in the direction crossing the extending direction of the three-dimensional structures.

Abstract: An optical sheet packaged body in which a wrinkle is not generated is provided. The optical sheet packaged body includes a laminated body in which a plurality of optical sheets such as a light source image segmentation sheet, a diffusion plate, a diffusion sheet, and a luminance enhancement film are layered, and a flexible film that wraps around the laminated body and has one or a plurality of openings to expose at least part of an outer edge of the diffusion plate. An exposed portion exposed from at least one of the openings of the diffusion plate is provided with a shape (supported portion) for positioning to a chassis (bottom chassis and middle chassis) supporting the optical sheet packaged body.

Abstract: According to the present invention, by controlling the angular distribution of the light outputted from a light guide plate to enable the angular brightness distribution of the light emitted from a backlight device to be controlled, the thickness of a liquid crystal display apparatus having the backlight device is reduced as well as the brightness is improved due to the reduction in returned light amount. Furthermore, since light is sufficiently mixed in the light guide plate, light sources with comparative large unevenness are enabled to be used. A backlight device according to the present invention includes a hole or a projection formed on the light outgoing plane of a light guide plate or the back plane opposing the light-outgoing plane, and a side face of the hole or the projection is directed roughly perpendicularly to the light-outgoing plane. Furthermore, specular reflection plates are arranged on the bottom plane and the side faces of the light guide plate.

Abstract: A display unit in which the view angle in the horizontal direction of emitting light is wider than the view angle in the vertical direction thereof, in which the emitting light has a polarization component in the vertical direction viewable with the use of a polarized sunglass, and which is able to improve display luminance is provided. A luminance enhancement film has a plurality of convex sections which extend toward in the horizontal direction and are arranged in the direction crossing the extending direction, and in which the refractive index in the extending direction is larger than the refractive index in the arrangement direction.

Abstract: Herein disclosed a backlight apparatus for illuminating a color display panel from the back side, which may include a light source section having a composite light source, a light detecting light introducing plate, a plurality of light amount sensors for the individual colors, and control means.

Abstract: A liquid crystal display, optical sheet manufacturing method, and an optical sheet are provided. The occurrence of moiré is prevented while suppressing a reduction in front luminance. The liquid crystal display includes: a liquid crystal display panel; a light source arranged on a back surface side of the liquid crystal display panel; an optical sheet with a light-condensing property arranged between the liquid crystal display panel and the light source, the optical sheet having a number of irregularities arranged continuously on a principal surface of the optical sheet; and a diffuser sheet arranged between the liquid crystal display panel and the optical sheet.

Abstract: A method of manufacturing the optical sheet is provided. The method includes: a first step of heating a composition containing a liquid crystal monomer or liquid crystal prepolymer and a photopolymerization initiator at a temperature equal to or higher than a melting point of the liquid crystal monomer or liquid crystal prepolymer and pressing the composition in a state where the composition is held between a master including a plurality of solid structures disposed continuously in one surface and having shape anisotropy in the one surface and a light transmission film disposed so as to face the solid structures of the master. The method also includes a second step of irradiating the composition with ultraviolet rays at a temperature lower than a phase transmission temperature to an isotropic phase to polymerize the liquid crystal monomer or liquid crystal prepolymer and, after that, separating the light transmission film from the master.

Abstract: An illumination apparatus is disclosed. The illumination apparatus includes a polarization plate, a light source, and a light transmission film. The light transmission film is disposed between the polarization plate and the light source and includes a plurality of prisms formed on a surface thereof, the plurality of prisms each having a ridge line in a first direction and being continuously arranged in a second direction perpendicular to the first direction. In the illumination apparatus, the light transmission film is disposed such that a ridge line direction of the plurality of prisms is one of a perpendicular direction and an approximately perpendicular direction to a transmission axis of the polarization plate.

Abstract: An illumination apparatus is disclosed. The illumination apparatus includes a polarization plate, a light source, and a light transmission film disposed between the polarization plate and the light source and including a plurality of prisms formed on a surface thereof. The plurality of prisms each have a ridge line in a first direction and are continuously arranged in a second direction perpendicular to the first direction. The light transmission film is disposed such that a ridge line direction of the plurality of prisms is one of a perpendicular direction and an approximately perpendicular direction to a transmission axis of the polarization plate. The plurality of prisms each have refractive indexes in the ridge line direction, an arrangement direction, and a thickness direction, the refractive index in the ridge line direction being larger than the refractive indexes in the arrangement direction and thickness direction.

Abstract: A surface-emitting semiconductor laser (VCSEL) having a structure in which the single horizontal mode of high power is stably maintained, and an optical device including a light-source device having this surface-emitting semiconductor laser are provided. A scattering-loss-structure portion composed of a low refractive-index region is disposed around a main current path in a surface-emitting semiconductor laser, namely around a cavity structure portion; the low refractive-index region is disposed at intervals; and the shape of the tip portion opposing to the center portion is set to be a tapered shape, for example, at an acute angle. Accordingly, in the cavity structure portion, the loss of light-emitting laser of a high-order mode localized in the outer circumferential portion becomes large, so that a surface-emitting semiconductor laser that oscillates the single-mode laser with favorable performance is constructed.

Abstract: A display unit capable of reducing luminance irregularity when using a point light source is provided. The display unit includes: a panel driven based on an image signal; a plurality of point light sources arranged in a region facing the panel; and an optical sheet arranged between the panel and the plurality of point light sources. The plurality of point light sources are arranged in a first direction and also in a second direction intersecting with the first direction, and the optical sheet has a tridimensional configuration that includes a first ridgeline extending in a third direction intersecting with the first and second directions, and a second ridgeline extending in a direction intersecting with the first, second and third directions.

Abstract: To provide a surface emitting device and a liquid crystal display in which the number of divided main light-source images is increased to enhance the uniformity of luminance distribution. A surface emitting device 10 according to the invention includes: a diffusing sheet 14 constituting a light exiting surface; a reflector 13 disposed opposite to the diffusing sheet 14; light sources 12 disposed between the diffusing sheet 14 and the reflector 13; and a prism sheet (light-source-image division sheet) 16 disposed between the diffusing sheet 14 and the light sources 12. The prism sheet 16 has linear protrusions 16a on the front surface thereof; and a flat portion 16d parallel to the sheet surface between the adjacent linear protrusions 16a. This generates light-source images through the flat portions 16d in addition to the divided light-source images through the linear protrusions 16a to increase the number of light-source images, thereby improving luminance uniformity.

Abstract: A liquid crystal display, optical sheet manufacturing method, and an optical sheet are provided. The occurrence of moiré is prevented while suppressing a reduction in front luminance. The liquid crystal display includes: a liquid crystal display panel; a light source arranged on a back surface side of the liquid crystal display panel; an optical sheet with a light-condensing property arranged between the liquid crystal display panel and the light source, the optical sheet having a number of irregularities arranged continuously on a principal surface of the optical sheet; and a diffuser sheet arranged between the liquid crystal display panel and the optical sheet.

Abstract: An optical sheet combination structure disposed between a polarizer and a surface emitting unit, includes a first optical sheet having a number of columnar cubic structures of curing resin arrayed on a transparent base, a valley portion between adjacent cubic structures contacting a surface of the transparent base, and a second optical sheet disposed nearer to the side of the polarizer than the first optical sheet, having a number of columnar cubit structures arrayed on a surface, and a refractive index of the cubic structures along an extension direction thereof being different from a refractive index of the cubic structures along an array direction thereof.

Abstract: A light-transmitting film that has a predetermined polarization split function, in addition to a light-collecting function is provided. The index of refraction nx in a prism extension direction and the index of refraction in a prism alignment direction differ from each other. By generating a difference in the indices of refraction in the prism extension direction and the prism alignment direction orthogonal thereto, for the light incident on the light-transmitting film, the polarization component Lx oscillating in the prism extension direction and the polarization component Ly oscillating in the prism alignment direction can have different transmission characteristics.

Abstract: An optical sheet capable of eliminating rapid lowering of the luminance view angle while minimizing the lowering amount of the front luminance, or while avoiding the lowering of the front luminance is provided. The optical sheet includes a first light transmissive film and a second light transmissive film. The first light transmissive film and the second light transmissive film are layered on each other, the first light transmissive film has a plurality of first convexes that extend in a given direction and are arranged in parallel in a direction crossing the given direction in-plane on the second light transmissive film side, and the second light transmissive film has a plurality of second convexes that are arranged in parallel in one direction and are arranged in parallel in a direction crossing the one direction in-plane on the first light transmissive film side, and has shape anisotropy and refractive index anisotropy in-plane.

Abstract: A light-transmissive film for use in display devices is provided. The light-transmissive film includes a plurality of first protrusions formed on one surface and extending in a predetermined direction of the one surface, and a plurality of second protrusions formed on an opposite surface to the one surface, extending in one direction of the opposite surface, arranged parallel to the one direction, and arranged parallel to a direction intersecting the one direction. At least one of the first and second protrusions has a refractive index anisotropy in a plane.

Abstract: A surface emitting device includes a light emitter, a polarizer having a transmission axis along which light emerging from the light emitter is transmitted, and an optical sheet combination disposed between the light emitter and the polarizer and composed of a plurality of optical sheets. Each of the plurality of optical sheets includes an emergent surface for causing the emergent light to emerge, a spatial structure continuously arrayed on the emergent surface, a first optical axis parallel to an extension direction of the spatial structure and having a first refractive index, and a second optical axis parallel to an array direction of the spatial structure and having a second refractive index different from the first refractive index, wherein the first or second optical axis of a smaller one of the first and second refractive indices extends almost parallel to the transmission axis of the polarizer.

Abstract: Herein disclosed a backlight apparatus for illuminating a color display panel from the back side, which may include a light source section having a composite light source, a light detecting light introducing plate, a plurality of light amount sensors for the individual colors, and control means.

Abstract: An illumination system capable of varying the light emission intensity of illumination light while maintaining the color balance of the illumination light is provided. An additive process illumination system obtaining a specific color light by mixing a plurality of color lights, the illumination system may include a plurality of light sources each emitting a different color light; a lighting period varying means for varying the lighting period of each light source; a light emission intensity varying means for varying the light emission intensity of each light source; and a control means for controlling the lighting period varying means and the light emission intensity varying means to control the light emission amount of each light source.