Abstract: A liquid crystal display device includes: a liquid crystal panel that includes a first substrate having a first vertical alignment film, a second substrate having a second vertical alignment film, a liquid crystal layer having a negative dielectric anisotropy, a first polarizing plate, and a second polarizing plate; an illuminating device; and a light control member that is disposed on a light emission side of the liquid crystal panel. The light control member diffuses light that is emitted from the liquid crystal panel in an anisotropic manner in an azimuth angle direction viewed from a normal direction of the liquid crystal panel to control an emission direction of the light.

Abstract: Provided is a display device including a light-diffusing member that includes a substrate, a plurality of light-shielding layers, and a light-diffusing section, and a polarizing plate.

Abstract: Provided is a liquid crystal display device in which grayscale inversion when viewing a liquid crystal panel in an oblique direction is suppressed, thereby being excellent in viewing angle characteristics. The liquid crystal display device includes a liquid crystal panel that includes a pair of substrates, a liquid crystal layer disposed between the pair of substrates, and a pair of polarization plates respectively arranged in the liquid crystal layer on a light incident side and a light emission side, an illumination device that is arranged on the light incident side of the liquid crystal panel and emits light toward the liquid crystal panel, and a light diffusion member that is arranged on the light emission side of the liquid crystal panel and causes light emitted from the liquid crystal panel to be diffused in an azimuthal direction viewed from a normal direction of the liquid crystal panel.

Abstract: A solar cell module includes a light collector, a solar cell element, and a frame. The light collector includes a main surface and an end surface, allows the external light to be incident from the main surface and allows the light propagating through the inside to be emitted from the end surface. The solar cell element is provided so as to face the end surface and receives the light emitted from the end surface to perform photoelectric conversion. The frame holds a peripheral edge portion of the light collector. The light collector includes a through hole which is provided in the inside in relation to the frame when seen from the main surface side and penetrates the light collector in a thickness direction or a notched s portion which is provided in the inside in relation to the frame when seen from the main surface side and extends from the main surface to a rear surface in the peripheral edge portion.

Abstract: A solar cell module capable of suppressing a decrease of a light gathering function with use and offering an excellent light gathering function over a long period of time, and a photovoltaic power generation device using the solar cell module are provided. A solar cell module 1 includes a light gathering member 2 formed of a fluorescent material 7 provided in a transparent base material 6, the light gathering member 2 absorbing external light by the fluorescent material 7 and causing emitted light to propagate to be emitted from an end face 2c, and a solar cell element 3 installed on the end face 2c of the light gathering member 2, the solar cell element 3 receiving the light and generating electric power.

Abstract: A light guide body includes a light-entering surface which outside light enters, one or more outside light-absorbing optical functional materials that absorb part of the outside light which enters the light-entering surface, a light-guiding optical functional material that is excited by energy of light absorbed by the one or more outside light-absorbing optical functional materials and that emits light different from the light, and a light-emitting surface whose area is smaller than the light-entering surface and from which the light emitted from the light-guiding optical functional material is emitted. A mixing ratio of the light-guiding optical functional material is smaller than a mixing ratio of at least an optical functional material having a largest mixing ratio among the one or more outside light-absorbing optical functional materials.

Abstract: A solar cell module includes a light guide and a solar cell element. The light guide has a light incident surface and a light exit surface having an area smaller than the light incident surface and contains a plurality of optical functional materials. In the light guide, part of external light incident on the light incident surface is absorbed by the plurality of optical functional materials, Foerster energy transfer occurs among the plurality of optical functional materials, and light emitted by the optical functional material having the longest peak wavelength of the emission spectrum among the plurality of optical functional materials is collected to and exits from the light exit surface. The solar cell element receives light exiting from the light exit surface of the light guide.

Abstract: A solar cell module includes a light guide body that guides incident light to propagate therein, and a solar cell element that receives the light propagating within the light guide body, wherein the light guide body is made of a light-transmissive base material and has a curved surface in at least a part thereof.

Abstract: A solar cell module according to an aspect of the present invention includes a light guide module including a first light guide and a second light guide that are disposed so as to face each other and a low-refractive-index layer that is disposed between the first light guide and the second light guide; and a solar cell that receives light emitted from the light guide module. A second main surface of the first light guide includes a first reflecting surface that reflects the first light beam and changes a propagation direction of the first light beam, which has entered through the first main surface of the first light guide.

Abstract: A solar cell module according to the invention includes a solar cell; a light guiding portion including a first fluorescent substance having a faint color and that emits light having low luminosity factor, the light guiding portion absorbing part of light incident from the outside using the first fluorescent substance and transmitting a first light beam emitted from the first fluorescent substance toward the solar cell; and a converter disposed between the light guiding portion and the solar cell, the converter converting the first light beam incident from the light guiding portion into a second light beam to which the solar cell has higher spectral sensitivity than to the first light beam and causing the second light beam to be incident on the solar cell. Thus, when the solar cell module is used as a window, the solar cell module is highly transparent and highly efficiently generates power.

Abstract: A solar cell unit (100) of the present invention includes (i) a fluorescence converging plate (2) that contains fluorescent materials (6) for absorbing invisible light and then emitting invisible light and (ii) a solar cell (4) provided on an end surface (2a) of the fluorescence converging plate (2) so as to have a light receiving surface which faces the ends surface (2a). When the fluorescence converging plate (2) is irradiated with external light, the fluorescent materials (6) emit invisible light which is then reflected in the fluorescence converging plate (2) and thereafter converged onto the end surface (2a). The solar cell (4) carries out electric power generation by use of fluorescence converged onto the end surface (2a) of the fluorescence converging plate (2). Conversely, visible light, with which the fluorescence converging plate (2) is irradiated, is transmitted through the fluorescence converging plate (2) without being absorbed by the fluorescent materials (6).