Abstract: In one example, a conductive optical element is capable of achieving a wide range of surface resistance, and capable of achieving an excellent transmission property. In one example, the conductive optical element includes a substrate having a surface, a number of structures arranged on the surface of the substrate at fine pitches equal to or smaller than a wavelength of a visible light, and a transparent conductive film formed on the structure. In one example, the transparent conductive film has a shape modeled on shapes of the structures. In one example, an aspect ratio of the structures is 0.2 or more and 1.28 or less, and a film thickness of the transparent conductive film is 9 nm or more and 50 nm or less.

Abstract: An optical element includes a base and a large number of structures arranged on the surface of the base, the structures being projections or depressions. The structures are arranged at a pitch shorter than or equal to a wavelength of light in a use environment. An effective refractive index in the depth direction of the structures gradually increases toward the base and has two or more inflection points.

Abstract: An optical sheet manufacturing apparatus includes a first master including a first three-dimensional structure, a second master including a second three-dimensional structure, a first processing unit to heat a first surface of a resin sheet to a first temperature and transfer the first three-dimensional structure onto the first surface heated, a second processing unit to cool the first surface to a second temperature lower than the first temperature, heat a second surface of the resin sheet to a third temperature higher than the second temperature, and transfer the second three-dimensional structure onto the second surface heated, a third processing unit to cool the second surface to a fourth temperature lower than the third temperature, a first conveyance mechanism to perform conveyance from the first processing unit to the second processing unit, and a second conveyance mechanism to perform conveyance from the second processing unit to the third processing unit.

Abstract: An optical sheet includes a sheet body including a single translucent resin material layer having a first surface that light enters and a second surface that the light exits. The sheet body is orientationally crystallized in a first in-plane axis direction and a second in-plane axis direction orthogonal to each other and having a linear expansion coefficient of 1.0*10E?5/° C. or less in all in-plane directions. A structure surface portion that has a geometric configuration and is formed on at least one of the first surface and the second surface.

Abstract: There is provided an infrared signal receiver which includes a photo-detector unit receiving light in a predetermined infrared wavelength region, sent from a remote operating unit; and an optical element disposed in front of the photo-detector unit, allowing the light of the predetermined infrared wavelength region to transmit therethrough in preference to other infrared wavelength region. In the receiver, the predetermined signal wavelength region is a region of 930 nm or longer and 960 nm or shorter, and mean transmittance of light of the optical element in the predetermined signal wavelength region is larger than mean transmittance of light in a region of 900 nm or longer and shorter than 930 nm, and/or, mean transmittance of light in a region of longer than 960 nm and 1,020 nm or shorter.

Abstract: A reflective screen includes a light reflecting layer, and a light diffusing layer provided on the light reflecting layer. The light diffusing layer has the diffusion property that in one (A axis) of two perpendicular axial directions on a light diffusion plane, a luminance distribution curve versus incidence angle is asymmetric with respect to the zero-incidence-angle axis, and the side on which the incidence angle (half-luminance incidence angle) with half of a peak luminance on the A axis in the normal direction to the screen plane is small faces in a direction in which external light has the highest strength.

Abstract: A screen for displaying an image by projection light includes: a selectively reflective layer having reflection properties with respect to light in a specific wavelength region corresponding to the projection light, and having absorption properties with respect to light in a wavelength region other than the specific wavelength region. And the selectively reflective layer includes an optical multilayer film having a dielectric film and a light-absorbing thin film having transmission properties, and a reflective layer for reflecting light which has passed through the optical multilayer film.

Abstract: There is provided an infrared signal receiver which includes a photo-detector unit receiving light in a predetermined infrared wavelength region, sent from a remote operating unit; and an optical element disposed in front of the photo-detector unit, allowing the light of the predetermined infrared wavelength region to transmit therethrough in preference to other infrared wavelength region. In the receiver, the predetermined signal wavelength region is a region of 930 nm or longer and 960 nm or shorter, and mean transmittance of light of the optical element in the predetermined signal wavelength region is larger than mean transmittance of light in a region of 900 nm or longer and shorter than 930 nm, and/or, mean transmittance of light in a region of longer than 960 nm and 1,020 nm or shorter.

Abstract: An optical multilayer film and reflective screen are provided. An optical multilayer film includes an optical laminate A including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate A having a reflection characteristic in which the reflectance peak intensities in the red, green, and blue wavelength regions are substantially the same; and an optical laminate B including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate B having a reflection characteristic in which the bottom of the reflectance curve lies in the green wavelength region.

Abstract: An optical multilayer film and reflective screen are provided. An optical multilayer film includes an optical laminate A including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate A having a reflection characteristic in which the reflectance peak intensities in the red, green, and blue wavelength regions are substantially the same; and an optical laminate B including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate B having a reflection characteristic in which the bottom of the reflectance curve lies in the green wavelength region.

Abstract: A reflective screen includes a light reflecting layer, and a light diffusing layer provided on the light reflecting layer. The light diffusing layer has the diffusion property that in one (A axis) of two perpendicular axial directions on a light diffusion plane, a luminance distribution curve versus incidence angle is asymmetric with respect to the zero-incidence-angle axis, and the side on which the incidence angle (half-luminance incidence angle) with half of a peak luminance on the A axis in the normal direction to the screen plane is small faces in a direction in which external light has the highest strength.

Abstract: An optical multilayer film and reflective screen are provided. An optical multilayer film includes an optical laminate A including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate A having a reflection characteristic in which the reflectance peak intensities in the red, green, and blue wavelength regions are substantially the same; and an optical laminate B including a plurality of types of optical layers having different refractive indices laminated on each other, the optical laminate B having a reflection characteristic in which the bottom of the reflectance curve lies in the green wavelength region.

Abstract: A screen for displaying an image by projection light includes: a selectively reflective layer having reflection properties with respect to light in a specific wavelength region corresponding to the projection light, and having absorption properties with respect to light in a wavelength region other than the specific wavelength region. And the selectively reflective layer includes an optical multilayer film having a dielectric film and a light-absorbing thin film having transmission properties, and a reflective layer for reflecting light which has passed through the optical multilayer film.