Abstract:
A light reuse sheet includes a reflective surface (100) having an uneven configuration, the reflective surface (100) in order to reflect light in a specific direction so as to cause light to be incident to a solar battery cell (1), the light being incident to a solar battery module (200), or in order to exit light in a specific direction by reflecting the light, the light being emitted from a light emitting element (50) of a light source module (300). The reflective surface (100) satisfies the following formula where a length in a horizontal direction of a solar battery cell (1) or a light emitting element (50) is represented by Lx; a length in a vertical direction of a solar battery cell (1) or a light emitting element (50) is represented by Ly; an angle formed between a direction of an uneven configuration of the reflective surface (100) and an edge in a horizontal direction of the solar battery cell (1) or the light emitting element (50) is represented by ϕ; and maximum width of light which passes between adjacent solar battery cells (1) and which is reflected by a light reuse sheet and is incident to a light receiving face of a solar battery cell (1) or maximum width of light which is not emitted from a light emitting element (50) in a specific direction and which exits in a specific direction by reflecting the light at a light reuse sheet is represented by A. df dφ = 0 = Ly ⋅ cos φ - Lx ⋅ sin φ - A cos 2 φ - sin 2 φ
Abstract:
A continuously changing image can be displayed in a wide angular range without causing a feeling of unease to observers. A display includes a plurality of pixels (PX) each including a plurality of first subpixels (SPX1) and a plurality of second subpixels (SPX2). In each of the plurality of pixels (PX) of the display, when illumination light is applied to the plurality of first subpixels (SPX1) from a normal direction, no diffracted light emerges from the plurality of first subpixels (SPX1), or first diffracted light emerges from the plurality of first subpixels (SPX1) in a first angular range, and when the illumination light is applied to the plurality of second subpixels (SPX2) from the normal direction, no diffracted light emerges from the plurality of second subpixels (SPX2), or second diffracted light having a wavelength equal to that of the first diffracted light emerges from the plurality of second subpixels (SPX2) in a second angular range wider than the first angular range, at an intensity lower than that of the first diffracted light; and the plurality of pixels (PX) are configured to display a continuously changing image using the first diffracted light and the second diffracted light.
Abstract:
A light reuse sheet includes: a reflection forming layer (3) having an uneven portion (201) including a first inclined portion (201b) and a second inclined portion (201a); and a reflecting surface (100) provided at a surface of the uneven portion (201). The light reuse sheet generates second light (H2b, H2t) by reflecting first light (HI, H1b, H1t) toward a front plate (22), the first light (H1, H1b, H1t) being transmitted through a filling layer (21) without being received by a light receiving face of a solar battery cell (30), the light reuse sheet generates third light (H3b, H3t) by reflecting the second light (H2b, H2t) at an interface between a light incident surface (110) and outside of the front plate (22), and the light reuse sheet causes the third light (H3b, H3t) to be incident to the light receiving face (J) of the solar battery cell (30).