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 heat pipe (20) includes a pipe (21), a wick (22), and an operating fluid. The wick is a capillary structure including a carbon nanotube layer, and is fixed to an inside wall of the pipe. The operating fluid is sealed in the pipe and soaks into the wick. The operating fluid includes a pure liquid, and a plurality of nanometer-scale particles uniformly suspended in the pure liquid. The nanometer-scale particles can be carbon nanocapsules (30) or particles of a metal (32) with high thermal conductivity. Each carbon nanocapsule can further have a metal with high thermal conductivity filled therein. The carbon nanotube layer contains carbon nanotubes of small size and high thermal conductivity, therefore the capillary performance of the wick is good. Further, because the operating fluid includes nanometer-scale particles with high thermal conductivity, this ensures that the operating fluid has high thermal conductivity.
Abstract:
A heat collector (10, 20) includes a heat absorption surface (12, 22), an opposite heat focus surface (11, 21) and one or more surrounding sides (13, 23). A matrix (24) of the heat collector is a thermally conductive material. There is an adiabatic dope (25) mixed within the matrix. A relative concentration distribution of the adiabatic dope increases from the heat absorption surface to the heat focus surface, and decreases from the surrounding sides to a center of the heat collector. The shape of the heat collector can be rectangular, cylindrical, prismatic, plate-shaped, square, or polyhedral. The heat collector can draw heat generated from electrical components, and collect the generated heat for reuse in order to enhance energy efficiency.
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:
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 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.
Abstract:
An exemplary driving circuit for a light-emitting diode having a positive terminal includes a resistor having first terminal and second terminal, a field-effect transistor, and a width-pulse modulation circuit. The second terminal of the resistor is connected to the positive terminal of the light-emitting diode. The field-effect transistor includes a source electrode and a gate electrode, the source electrode being connected to the first terminal of the resistor. The pulse-width modulation circuit is configured for modulating a voltage across the resistor so as to control the grate electrode of the field-effect transistor.
Abstract:
A light guide plate (12) has a light incidence surface (121) for receiving light, a light emitting surface (123) for emitting light, and a bottom surface (122). The bottom surface has a plurality of diffusion elements (124) arranged thereat. Each diffusion element defines a diffraction grating unit (125) therein. A grating direction of each diffraction grating unit is substantially perpendicular to a main direction of light beams received by the diffraction grating unit. Areas of the diffraction grating units progressively increase with increasing distance away from the light incidence surface. Diffractive capabilities of the diffraction grating units progressively increase with increasing distance away from the light incidence surface. These features improve the overall efficiency of utilization of light, and enable the light emitting surface to output highly uniform light.