Abstract:
A light guide plate (300) includes a light incidence surface (310) for receiving light beams, a light-emitting surface (320) for guiding light beams out of the light guide plate, and a bottom surface (330) reflecting and scattering light beams in directions toward the light-emitting surface. The bottom surface includes scattering-dots (341), and a predetermined region of the bottom surface also includes sub-scattering-dots (342). At least one sub-scattering-dot is disposed around each scattering-dot. The sub-scattering-dots are smaller than the scattering-dots. With this micro-configuration, intensities of light beams output from the light guide plate are uniform and bright.
Abstract:
A color filter is provided. The color filter includes: a base; a black matrix arranged on the base; a grating layer arranged on the base, the grating layer comprising a plurality of grating units separated by the black matrix, the grating units being comprised of a piezoelectric material, the grating unit comprises a plurality of striated microstructures; and a controlling circuit comprising a plurality of controlling units electrically connected with the respective striated microstructures, the controlling units each being configured to apply a voltage to their corresponding striated microstructures so as to adjust a grating constant associated therewith, thereby allowing light with a predetermined wavelength to be filtered through the grating unit.
Abstract:
The present invention relates to a thin-film structure with counteracting layer. The thin-film structure includes a transparent substrate, a multilayer film stack and a counteracting layer. The substrate has a first surface and an opposite second surface. The film stack is formed on the first surface of the substrate for providing an optical function. The counteracting layer is formed on the second surface of the substrate. The stress compensation is composed of a single layer having a predetermined thickness for compensating an internal stress produced by the film stack.
Abstract:
A direct type backlight module (100) includes a substrate (110) and a number of light sources (120) and a plurality of thermal electric coolers (160). The substrate has a first surface (111) and a second surface (112), and the light sources are formed on the first surface of the substrate, the TE coolers are arranged on the second surface of the substrate. Each TE cooler has a cold portion (161) and a hot portion (162), the cold portion contacts with the second surface of the substrate. The hot portion connects with at least one heat pipe (170). The heat pipe includes a evaporation portion and a condensation portion, the evaporation portion contacts with the hot portion. The condensation portion contacts with a heat sink (180). A fan (190) is arranged at one side of the heat sink, and an opposite side of the heat sink defines a plurality of vents (195). The direct type backlight module has improved heat dissipation performance.
Abstract:
A light source device includes a light source, a reflective filter and an optical absorber. The light source is used for emitting a light beam. The reflective filter is configured for selectively reflecting a first portion of the light beam emitted from the light source and for selectively transmitting a second portion thereof. The optical absorber is configured for absorbing the second portion of the light beam transmitted by said reflective filter. An optical system for an optical disk storage system is also provided. The optical system includes the light source device, an objective lens, and a detector. The objective lens is used for focusing the portion of the light beam onto an optical disk. The detector receives a return light beam reflected by the optical disk.
Abstract:
A heat dissipation module for a mobile computer, the mobile computer having a base (10) and a display unit (20) pivotally coupled to the base, the base having a number of through holes (13) defined on a shell (18) thereof, the heat dissipation module including: a cooling fan (14) disposed near the through holes of the shell; and a heat pipe (15) having a evaporating section (52), a condensing section (56), and an intermediate section (54) connecting the evaporating section and the condensing section; wherein the evaporating section of the heat pipe is disposed between the shell and the cooling fan, and the condensing section of the heat pipe is disposed on the display unit of the mobile computer.
Abstract:
A heat generator includes a heat generating member including a heat flow output face, a heat flow insulative member attachably surrounding the heat generating member except the heat flow output face for insulating the heat generating member except the heat flow output face, a heat flow compensating member attachably surrounding the heat flow insulative member but exposing the heat flow output face to allow it contacting with a specimen, and a heat flow compensating circuit connected between the heat flow insulative member and the heat flow compensating member. The circuit is capable of controlling heat generated by the heat flow compensating member to cause no heat flow flowing between the heat flow compensating member and the heat flow insulative member whereby the heat energy of the heat flow outputing from the heat flow output face of the heat generating member is equal to the heat energy of heat generated by the heat generating member.
Abstract:
A light guide device (1) and a backlight module (3) using the same. The light guide device includes a light guide plate (11) and a reflective mirror (10). The light guide plate has at least one light receiving surface (111), and two opposite light emitting surfaces (112,113). The reflective mirror is set between the light emitting surfaces, and is integrally manufactured with the light guide plate. The light guide device and backlight module using the same may be applied to optoelectronic devices, such as liquid crystal displays, overhead projectors, etc. The light guide device has a simple structure, and transforms light from at least one light source (31) into two surface light sources emitting light with uniform brightness.
Abstract:
A heat generator includes a cubic heat generating member for outputting heat flow. The heat generating member includes a heat flow output face and five heat flow insulation faces. Five thermoelectric coolers are attached on the five heat flow insulation faces respectively. A heat flow compensating circuit is electrically connected between each heat flaw insulation face and a corresponding thermoelectric cooler. The circuit is capable of controlling heat generated by the thermoelectric cooler to cause the temperature of the heating face of the thermoelectric cooler to be equal to the temperature of the heat flow insulation face. Controlling the heating in this manner results in the output of heat energy from the heat flow output face of the heat generating member being substantially equal to the heat energy generated by the heat generating member.
Abstract:
A light guide plate (20) in accordance with the present invention includes a transparent plate (200) and a light transmittance enhancement layer (25). The transparent plate includes a light emitting surface (22), and a light incidence surface (21) opposite to the light emitting surface. The light transmittance enhancement layer is provided on the light emitting surface. The light transmittance enhancement layer is made of silicon dioxide or magnesium fluoride. A thickness of the light transmittance enhancement layer is in the range from 58˜69 nanometers. Because of the light transmittance enhancement layer, the light guide plate has enhanced efficiency of utilization of visible light. A backlight system (2) using the light guide plate is also provided.