摘要:
A light control device is provided which (i) controls an arbitrary area on a plane to emit light and (ii) can suppress a crosstalk. A light control device (1) of the present invention includes: a light guide plate (2), having rectangular parallelepiped light guide paths juxtaposed to each other, for guiding light entered an edge of a shorter side of the light guide path, in a longer side direction of the light guide paths; LEDs (3), provided at the respective edges, for emitting lights toward the respective light guide paths; and light-passage amount adjusting means for adjusting ratios of light-passage amount of the light guide plate (2). The light-passage amount adjusting means (i) is provided on a light exit surface side of the light guide plate (2) and (ii) has rectangular parallelepiped switching elements (4) which allow ratios of light-passage amount of the light guide plate (2) to be adjustable. The switching elements (4), juxtaposed to each other in the longer side direction, each extends in a direction perpendicular to the longer side direction.
摘要:
A backlight device of the present invention includes a substrate (2), a liquid crystal layer (4), and a scattering layer (5). The substrate (2) has a surface facing the liquid crystal layer (4), on which surface two comb electrodes (3a and 3b) are provided. The comb electrode (3a) includes a plurality of comb-teeth parts (33a) meshing with a plurality of comb-teeth parts (33b) of the comb electrode (3b). Therefore, the comb electrodes (3a and 3b) can causes electric fields to be generated, in response to an applied voltage, in at least two directions each parallel to the surface of the substrate (2). Further, there is a region whose effective refractive indexes with respect to polarized light p and polarized light s become large. It is therefore possible to control emission of both the polarized light p and the polarized light s.
摘要:
Provided is a dimming device capable of emitting light from any area on a flat plane and which is minimized in crosstalk. The dimming device (1) according to the present invention includes: a light guiding plate (2); an LED (3) disposed on an edge of the light guiding plate (2); a switching section (4); a frame division section (5) that divides one frame period into a plurality of sub frame periods; a light source control section (6) that makes the LED (3) emit light every sub frame period; and a voltage application section (7). The switching section (4) includes scan electrodes (8) disposed in a direction parallel to a direction in which the LED (3) is disposed, a plurality of signal electrodes (10) disposed in a direction at right angles to the scan electrodes, and liquid crystal elements (9) with changeable light extraction rates from the light guiding plate (2). The voltage application section (7) selects a scan electrode out of the plurality of scan electrodes every sub frame period and applies a voltage thereto, and applies, to at least one of the plurality of signal electrodes, a voltage in accordance with a light extraction rate of the liquid crystal element (9). The present invention can be suitably used as a backlight of an image display device.
摘要:
In order to provide a new light guiding unit capable of accommodating to area-active driving, and a lighting device, a lighting device (10) includes (i) a light guiding unit that includes (a) a light guiding plate (1) made of light-transmitting base material, (b) a plurality of columnar areas (4) filled with liquid crystal material, which columnar areas are provided in a direction intersecting with an in-plane direction of the light guiding plate (1), and (c) a transparent electrode with which a voltage is applied for driving the liquid crystal material, and (ii) an LED (2), as a primary light source.
摘要:
An illumination device (10) includes (i) a light guide plate (1) made from a light-transmitting material, (ii) a light extracting layer (7) including (a) a light reflecting member, which is provided on a first surface (lower surface (1a)) side of the light guide plate (1), for reflecting light (3) that enters from the light guide plate (1) such that the light (3) is emitted from a second surface (upper surface (1b)) side of the light guide plate (1), the second surface facing the first surface of the light guide plate (1) and (b) a shutter member for switching between transmission and non-transmission of light, and (iii) LEDs (2) each serving as a primary light source. The light guide plate (1) includes a plurality of pillar regions (4) which are provided in a direction perpendicular to an in-plane direction of the light guide plate (1), and which have a refractive index different from that of the light-transmitting material. This makes it possible to provide a novel light guide unit, an illumination device and the like that can carry out an area active driving.
摘要:
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.
摘要:
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.
摘要:
A light-controlling element includes an illumination unit capable of controlling an amount of emitted light, and a light guide body on which the light emitted from the illumination unit is incident. The light guide body has a function of propagating the light while totally reflecting the light inside the light guide body, and the light guide body has a function of propagating the light emitted from the illumination unit at a plurality of different propagation angles inside the light guide body. The light guide body includes a plurality of light extraction regions having a function of extracting the light to the outside. At least two of the plurality of light extraction regions have different incidence angle ranges in which the light is capable of being extracted to the outside.
摘要:
A light-controlling element includes an illumination unit capable of controlling an amount of emitted light, and a light guide body on which the light emitted from the illumination unit is incident. The light guide body has a function of propagating the light while totally reflecting the light inside the light guide body, and the light guide body has a function of propagating the light emitted from the illumination unit at a plurality of different propagation angles inside the light guide body. The light guide body includes a plurality of light extraction regions having a function of extracting the light to the outside. At least two of the plurality of light extraction regions have different incidence angle ranges in which the light is capable of being extracted to the outside.
摘要:
A light-diffusion member includes a substrate having light transparency, a plurality of light-diffusion parts formed on one surface of the substrate, and a light-absorbing layer formed in a region other than a region where the light-diffusion parts are formed, among the one surface of the substrate. Each light-diffusion part includes a light-emission end surface on the side of the substrate and a light-incident end surface of an area larger than an area of the light-emission end surface on a side opposite to the side of the substrate. The height from the light-incident end surface of the light-diffusion part to the light-emission end surface thereof is larger than the thickness of the light-absorbing layer. The plurality of light-diffusion parts are randomly arranged on the one surface of the substrate.