Abstract:
An apparatus (100) for measuring a thickness of a thin article according to an embodiment of the present apparatus is provided. The apparatus includes an optical fiber interferometer (101), a signal processor module (102) and a measuring module (103). The optical fiber interferometer is configured for obtaining an optical distance difference. This optical distance difference is a result of the thickness of the thin article between a first optical path in which the thin article is measured and a second optical path. The signal processor module is configured for converting an optical distance difference into a phase difference and processing the optical distance difference to obtain a linear signal. That linear signal is convertible into a thickness value of the thin article.
Abstract:
A heat generator includes a heat generating member for generating heat flow, a temperature compensating member, and a heat flow compensating circuit connected between the heat generating member and the temperature compensating member. The heat generating member includes a heat export face and a heat insulation face. The temperature compensating member includes a temperature compensating face facing the heat insulation face. The circuit is capable of controlling heat generated by a thermoelectric resistor of the temperature compensating member to cause the temperature of the temperature compensating face to be equal to the temperature of the heat insulation face, which results in the heat energy of the heat flow exporting out from the heat export face of the heat generating member to be substantially equal to the heat energy of the heat generated by the heat generating member.
Abstract:
An temperature control apparatus includes a temperature detecting element (50), a control circuit (60), and a thermoelectric unit (70). The temperature detecting element contacts to a first surface (82) of a predetermined target (800). The control circuit is electrically connected to the temperature detecting element. The thermoelectric unit is electrically connected to the control circuit, and contacts a second surface of the predetermined target. The temperature detecting element detects a temperature signal. The temperature signal is input into the control circuit. The control circuit changes the temperature signal into an electrical current signal, and the electrical current signal drives the thermoelectric unit to control the temperature of the predetermined target.
Abstract:
A heat generator includes a heat generating member and a temperature compensating member made from different material. The heat generating member includes a heat flow output face for outputing heat flow and five heat flow insulation faces. The temperature compensating member encloses and contacts the heat generating member except the heat flow output face. A heat flow compensating circuit is electrically connected between the temperature compensating member and the heat generating member for maintaining a state of no heat flow flowing between the heat generating member and the temperature compensating member, whereby the heat energy of the heat flow outputing from the heat flow output face is equal to the heat energy of heat generated by the heat generating member.
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 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.
Abstract:
A heat generator includes a heat generating member for generating heat flow, a temperature compensating member, and a heat flow compensating circuit connected between the heat generating member and the temperature compensating member. The heat generating member includes a heat export face and a heat insulation face. The temperature compensating member includes a temperature compensating face facing the heat insulation face. The circuit is capable of controlling heat generated by a thermoelectric resistor of the temperature compensating member to cause the temperature of the temperature compensating face to be equal to the temperature of the heat insulation face which results in the heat energy of the heat flow exporting out from the heat export face of the heat generating member substantially being equal to the heat energy of the heat generated by the heat generating member.
Abstract:
An exemplary camera module includes a lens holder (10), a lens module (20), a position detecting mechanism (30), and an image pick-up module (40). The lens module includes a lens barrel (22) and one lens received in the lens barrel. The lens barrel is axially movable received in the lens holder. The position detecting mechanism includes a conductive strip (32) disposed on outer periphery of the lens barrel along an axial direction, a number of conductive terminals (36), a number of electrical sources (34), and a processor (38). The conductive terminals are securely arranged on an inner periphery of the lens holder parallel to each other. A cathode of each electrical source is electrically connected to a corresponding conductive terminal. The processor is electrically connected with an anode of each electrical source. The image pick-up module is arranged so as to receive the light from the lens module.
Abstract:
An temperature control apparatus includes a temperature detecting element (50), a control circuit (60), and a thermoelectric unit (70). The temperature detecting element contacts to a first surface (82) of a predetermined target (800). The control circuit is electrically connected to the temperature detecting element. The thermoelectric unit is electrically connected to the control circuit, and contacts a second surface of the predetermined target. The temperature detecting element detects a temperature signal. The temperature signal is input into the control circuit. The control circuit changes the temperature signal into an electrical current signal, and the electrical current signal drives the thermoelectric unit to control the temperature of the predetermined target.
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.