Abstract: An optical element laminate is provided which, while an increase in thickness of a liquid crystal display device is suppressed, improves insufficient rigidity of an optical element and, in addition, which does not degrade display characteristics of the liquid crystal display device. The optical element laminate includes a plate-shaped support member having a first primary surface and a second primary surface and an optical element which is laminated on at least one of the first primary surface and the second primary surface of the support member and, in addition, which has a film shape or a sheet shape. The periphery of the laminated optical element is at least bonded to facing two sides of the support member, the optical element and the support member are placed in close contact with each other, and a thickness t of the support member, a length L of the support member, and a tensile force F of the optical element satisfy the relational expression of 0?F?1.

Abstract: The optical sheet includes a first lens sheet having a plurality of first three-dimensional structures arrayed to extend to one surface thereof, and a reflective polarizer sheet for transmitting either one of p-polarization component and s-polarization component of incident light and reflecting the other of p-polarization component and s-polarization component of the incident light. Head portions of the first three-dimensional structures are bonded to the reflective polarizer sheet.

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: An illuminating device capable of decreasing not only in-plane luminance unevenness in the front face direction but also in-plane luminance unevenness when viewed from a diagonal direction is provided.

Abstract: Using a distance L between the centers of light sources 12, 12; a refractive index n of an optical element 15; a thickness d of the optical element; a distance W from the center of the light source to the optical element; a refractive index n0 of air; an angle of incidence ?1 of light emitted from the light sources and coming into the optical element, relative to the direction of optical axes; an angle of refraction ?2 of light, incident on the optical element, in the optical element; a diameter of each light source as D; and a maximum tangential angle a formed between a tangential line in contact with an outer surface of a luminance distribution generating layer 18 and a plane orthogonal to the optical axes, there is included a maximum tangential angle a satisfying x>L/2?D/2 when calculating a travel range x of a split image of the light sources in a direction normal to the optical axes using (1) n0 sin(a)=n sin(a??2), (2) n0 sin ?1=n sin ?2 and (3) x=W tan ?1+d tan ?2.

Abstract: An optical element covering member includes: at least one optical element; a support medium supporting the at least one optical element; and a shrinkable covering member covering the at least one optical element and the support medium. In the optical element covering member, among sides forming primary surfaces of the support medium, at least one set of sides facing each other is covered with the covering member, and the following equation (1) is satisfied under conditions at a temperature of 70° C., 0?F?1.65×104×t/L ??(1) where t indicates the thickness of the support medium, L indicates the length of the side of the support medium covered with the covering member, F indicates a tensile force of the covering member, which acts in a direction parallel to the side having the length L.

Abstract: An illuminating apparatus is provided and includes a plurality of point light sources in one plane and a first optical sheet and a second optical sheet overlapped in a region facing the plurality of point light sources. The plurality of point light sources are arranged in a first direction and also arranged in a second direction orthogonal to the first direction. The first optical sheet has a plurality of first three-dimensional structures extending in a direction parallel to the first direction and arranged in a direction parallel to the second direction. The second optical sheet has a plurality of second three-dimensional structures extending in a direction parallel to the second direction and arranged in a direction parallel to the first direction. Each of the second three-dimensional structures has a shape which generates a larger amount of return light from normal incident light as compared with the first three-dimensional structures.

Abstract: Using a distance L between the centers of light sources 12, 12; a refractive index n of an optical element 15; a thickness d of the optical element; a distance W from the center of the light source to the optical element; a refractive index n0 of air; an angle of incidence ?1 of light emitted from the light sources and coming into the optical element, relative to the direction of optical axes; an angle of refraction ?2 of light, incident on the optical element, in the optical element; a diameter of each light source as D; and a maximum tangential angle a formed between a tangential line in contact with an outer surface of a luminance distribution generating layer 18 and a plane orthogonal to the optical axes, there is included a maximum tangential angle a satisfying x>L/2?D/2 when calculating a travel range x of a split image of the light sources in a direction normal to the optical axes using (1) n0 sin(a)=n sin(a??2), (2) n0 sin ?1=n sin ?2 and (3) x=W tan ?1+d tan ?2.

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: An optical element package includes at least one optical element; a supporting member that supports the at least one optical element; and a packaging component having shrinkability that packages the at least one optical element and the supporting member. The supporting member has two main surfaces having a rectangular shape, and in angle formed between an orientation axis of a main surface portion of the packaging component and a side surface of the supporting member is 8° or less.

Abstract: An optical element covering member includes: at least one optical element; a support medium supporting the at least one optical element; and a shrinkable covering member covering the at least one optical element and the support medium. In the optical element covering member, among sides forming primary surfaces of the support medium, at least one set of sides facing each other is covered with the covering member, and the following equation (1) is satisfied under conditions at a temperature of 70° C., 0?F?1.65×104×t/L ??(1) where t indicates the thickness of the support medium, L indicates the length of the side of the support medium covered with the covering member, F indicates a tensile force of the covering member, which acts in a direction parallel to the side having the length L.

Abstract: A surface emitting device includes a plurality of light sources disposed on an identical plane, an optical element having translucent properties and having formed thereon a luminance distribution-forming layer for suppressing luminance variations of light emitted from the plurality of light sources. A reflective surface is provided. for reflecting a light emitted from the plurality of light sources, the reflective surface being disposed opposite to the optical element by sandwiching the plurality of light sources with an air layer in between the reflective surface and the optical element. A diffuser for diffusing the light emitted from the plurality of light sources is disposed opposite to the plurality of light sources by sandwiching the optical element.

Abstract: There is provided an optical sheet stack which includes a first optical sheet having a large number of irregularities consecutively arranged on one surface thereof, and a second optical sheet stacked thereon. In the optical sheet stack, the second optical sheet has, on a bonding surface thereof, an adhesive layer bonded with apexes of the irregularities, and while assuming pitch of arrangement of the irregularities as P, and width of bonding of each apex of the irregularities bonded to the adhesive layer as Pw, the relation of 0<Pw/P?0.2 is satisfied.

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: An optical element covering member includes one or more optical elements, a support medium for supporting the one or more optical elements, and a covering member for covering the one or more optical elements and the support medium. At least one out of the one or more optical elements is a reflective polarizer, and the covering member has at least a region, through which the light inputted from a light source is emitted to a liquid crystal panel, the region having a phase difference lag of not more than 1/50? of a measured wavelength, with respect to an optical axis of the reflective polarizer.

Abstract: An optical sheet and a display device including the optical sheet are disclosed. The optical sheet includes a first lens sheet having a plurality of first three-dimensional structures arrayed to extend to one surface thereof, and a reflective polarizer sheet for transmitting either one of p-polarization component and s-polarization component of incident light and reflecting the other of p-polarization component and s-polarization component of the incident light. Head portions of the first three-dimensional structures are bonded to the reflective polarizer sheet.

Abstract: A display device is provided. The display device includes: a panel driven according to a video signal; a light source configured to emit light for illuminating the panel; a lens sheet disposed between the panel and the light source; and driving means for driving the panel. The lens sheet is formed by arranging a plurality of three-dimensional structures extending on one plane along an extending direction of the structures. A width of the three-dimensional structures in an arrangement direction is 110 ?m or more. The panel has a pixel arrangement such that subpixels of a plurality of colors are arranged within one pixel and such that a plurality of subpixels of a same color are arranged within one pixel. The driving means drives the panel such that light and shade occur in a plurality of subpixels of a same color included in one pixel of pixels having at least a low gradation.