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| Number | Title | Issue Date |
| 7847237 | Method and apparatus for testing and evaluating performance of a solar cell A method for evaluating performance of a solar cell, comprising: a current passing step (S1) of passing, in a forward direction, a direct current with respect to a solar cell element constituting the solar cell; a temperature control step (S2) of heati... | 12/07/2010 |
| 7800048 | System and method for determining a change of temperature of a SBT pixel element A system and a method for determining a change of temperature of a SBT pixel element are provided. The method includes determining a first value indicating an amount of surface charge of the SBT pixel element due to a spontaneous polarization of the SBT pixel elemen... | 09/21/2010 |
| 7750287 | Temperature control apparatus and method, and program A temperature control apparatus is provided which may control temperature of an optical component that operates upon receipt of light from a light source. The apparatus may include a light quantity detector which detects a quantity of light based on the light source... | 07/06/2010 |
| 7728282 | Method and apparatus capable of controlling heat dissipation based on temperatures measured at an intake vent and an outlet vent A heat dissipation method for a projector includes measuring a first temperature at an intake vent of a projector, measuring a second temperature at an outlet vent of the projector, controlling a heat sink of the projector based on the first temperature when the sec... | 06/01/2010 |
| 7705292 | Method and apparatus for detecting a condition of an optical element A condition or detecting a change in the condition of an optical element of a laser arrangement is detected. An ultrasonic signal is coupled into an optical element such that the ultrasonic signal travels along a path within the optical element, and a transit time o... | 04/27/2010 |
| 7633054 | Radiation detecting system using solid-state sensors with electronic cooling and method of preventing condensation using the same The invention provides a radiation detector that can efficiently cool solid-state sensors used in collecting photons produced during conversion of radiation to light. The radiation detector can achieve an excellent cooling effect by transferring heat, which is produ... | 12/15/2009 |
| 7608815 | Photo detector with compensated output and method involving same A method of compensating a photo sensor (and a corresponding photo sensor with compensation) insures the accuracy of the photo sensor, e.g., over environmental variations or photo cell variations. The method comprises: providing a first signal indicative of a light ... | 10/27/2009 |
| 7573023 | Arrangement and method for compensation of the temperature dependency of detectors in spectrometers The present invention is directed to an arrangement and the associated method for the compensation of the temperature dependency of detectors in spectrometers. In the solution according to the invention, the arrangement for compensation of the temperature dependency... | 08/11/2009 |
| 7566865 | Temperature controlled photodetector This disclosure describes a temperature controlled photodetector. The disclosed detector can reach a temperature at which responsivity is maximized within a short time and with little wasted power. Furthermore, the photodetector prevents thermal gradients from devel... | 07/28/2009 |
| 7534994 | Laser scanning system employing laser mode switching using a binary mode switching signal A diffractive-based laser scanning system that monitors portions of the laser light beams generated by a laser light source (e.g., VLD) employed therein to generate a mode switching signal indicative of a shift in the characteristic wavelength of the laser light bea... | 05/19/2009 |
| 7439481 | In-situ power monitor having an extended range to stabilize gain of avalanche photodiodes across temperature variations Disclosed are an in-line monitoring apparatus with a temperature compensator, an optical receiver and a method for stabilizing gain of an avalanche photodiode (“APD”) over an extended range of input power values and across temperature variations. The apparatus c... | 10/21/2008 |
| 7427741 | Bias control apparatus for avalanche photodiode and optical apparatus utilizing the bias control apparatus An apparatus is provided with a biasing unit supplying a bias signal to a first avalanche photodiode and a second avalanche photodiode, the bias signal having a first level and a second level, the first level causing a multiplying effect and the second level causing... | 09/23/2008 |
| 7411178 | Wavelength measuring device for a single light receiving element and wavelength measuring method at different temperatures A wavelength measuring device includes: a light receiving element that receive light to be measured; a temperature controller that maintains the light receiving element at different temperatures; and a calculation unit that determines the wavelength of the light to ... | 08/12/2008 |
| 7397021 | Device having optical sensor A functional device includes a light sensor for outputting a signal control signal relative to received light, a temperature sensor for outputting an additional control signal relative to an ambient temperature, a control means for controlling the signal control sig... | 07/08/2008 |
| 7385182 | Temperature sensing circuit having a controller for measuring a length of charging time A temperature sensor includes a photodiode or other suitable light-sensitive device connected to a power source in a reverse bias configuration. A capacitor and a controller are connected to the photodiode. The controller measures the length of time required for the... | 06/10/2008 |
| 7349132 | Image reading apparatus An image reading unit according to the present invention includes a lamp to incorporate a change in temperature conditions to the emitting light amount, the lamp capable of illuminating an reading object with a light of a predetermined intensity, an image signal gen... | 03/25/2008 |
| 7339669 | Device for the analysis of the qualitative composition of gases A device for the analysis of the qualitative, optionally also the quantitative composition of gases, uses measuring light of known spectral composition that can pass through the gas to be analyzed and the gas can be caused to interact. A detector arrangement is pres... | 03/04/2008 |
| 7331228 | Acceleration sensor An acceleration sensor in accordance with an aspect of the present invention comprises a first substrate, a multilayer second substrate and a sensor portion. The multilayer second substrate is opposed to the first substrate. The multilayer second substrate is provid... | 02/19/2008 |
| 7332720 | Cold shield for cryogenic camera A cold shield of a cryogenic camera. The cold shield reflects external thermal radiation away from the cryogenic camera, so as to shield the cryogenic camera in a cryogenic temperature such that no internal thermal radiation will be generated. The cryogenic camera h... | 02/19/2008 |
| 7326921 | Optical receiver with bias voltage adjusted according to adjustable bypass current The present invention is to provide an optical receiver by which the avalanche photodiode (APD) can be protected from the self-breakdown when the signal light with excess power enters therein. The APD is biased by the DC/DC converter via the control circuit includin... | 02/05/2008 |
| 7319590 | Conductive heat transfer system and method for integrated circuits According to an embodiment of the present invention, a system includes an integrated circuit coupled to a circuit board and a heat conducting element having a thermal conductivity of at least 391 W/m*K. The heat conducting element includes a flexible portion dispose... | 01/15/2008 |
| 7256378 | Output-compensating device for image sensor An output compensating device capable of optimally compensating output signals of an image sensor composed of a number of light-sensor circuits, each of which represents a unit pixel and is capable of producing in a photoelectric converting element a sensor current ... | 08/14/2007 |
| 7253396 | Cooled photodetector Cooled photosensitive cell (80) comprising a table (50), sensors (66) which are fitted on the table, a screen (80) to prevent parasitic radiation on the sensors, and at least one Joule-Thomson cooler (41, 42) to cool the table and ... | 08/07/2007 |
| 7238942 | Spectrometric using broadband filters with overlapping spectral ranges The invention provides a spectrometer (10) which includes a filter arrangement (16,18), in addition to any option filters (20) for limiting an operational wavelength range of the spectrometer, the filter arrangement (16,18) comprising a p... | 07/03/2007 |
| 7227115 | Method of and system for detecting and correcting mode switching in diffractive-based laser scanning systems A diffractive-based laser scanning system of the present invention monitors portions of the laser light beams generated by a laser light source (e.g., VLD) employed therein to generate a mode switching signal indicative of a shift in the characteristic wavelength of... | 06/05/2007 |
| 7208713 | Light source unit and display device having luminance control based upon detected light values A light source unit includes a light source having LED chips for emitting different colors of light and an optical sensor for detecting light from a light mixer. A light source control section controls by feedback control luminance of each of the LED chips according... | 04/24/2007 |
| 7199358 | Antenna-coupled microbolometer An antenna-coupled microbolometer multilayer structure, and associated method of forming an antenna-coupled microbolometer multilayer structure are disclosed, where the structure includes a dielectric layer of dielectric material having at least one locally doped re... | 04/03/2007 |
| 7191599 | Cooling apparatus and method, and exposure apparatus having the cooling apparatus A cooling apparatus for cooling an optical element provided in a vacuum atmosphere includes a radiational cooling part, arranged apart from the optical element, for cooling the optical element by radiation heat transfer, and a controller for controlling temperature ... | 03/20/2007 |
| 7183540 | Apparatus for measuring photo diodes' temperature dependence A system for measuring gains of a plurality of photo diodes includes a chamber adapted to host the plurality of photo diodes and a temperature control unit configured to control the temperature within the chamber to a predetermined temperature. A control unit select... | 02/27/2007 |
| 7164109 | Solar position tracing sensor using thin film pattern of both-sided printed circuit board Provided is a solar position tracing sensor having a high resolving power by using a temperature coefficient and heat conductivity of fine patterns on a printed circuit board (PCB). The solar position tracing sensor is reliable and has a wide application ranges for ... | 01/16/2007 |
| 7154077 | Device and method for measurement of incident power and energy Devices and methods for measurement of energy from a defined source having increased accuracy in measuring low energies. The device comprises a housing containing sensors. A first sensor receives energy from the source and produces a first output. A second sensor re... | 12/26/2006 |
| 7142704 | Image display system A dynamic range compression processing and a plurality of other predetermined image processings are separately carried out on an original image data. A dynamic-range-compressed image is displayed on the basis of image data obtained by carrying out the dynamic range ... | 11/28/2006 |
| 7122785 | Rotation angle detection apparatus and resin rotary disk for the same A rotation information record surface of a rotary disk is disposed at an intermediate position between a fixing point of the rotary disk and a rotary shaft and a fixing position of a detection head, so that a stable gap can be obtained with a variation due to therma... | 10/17/2006 |
| 7105804 | Light beam scanning unit and image forming apparatus The temperature difference between an internal temperature and an external temperature which are detected by an internal temperature sensor and an external temperature sensor, respectively, is calculated. If the internal temperature is lower by not less than predete... | 09/12/2006 |
| 7102121 | Temperature compensation for QKD systems Systems and methods for compensating a QKD system for variations in temperature are disclosed. One of the methods includes identifying an optimum detector gating signal timing as a function of temperature for a single-photon detector (SPD) control board in one of th... | 09/05/2006 |
| 7098443 | Temperature compensation method and apparatus for color sensors Method and apparatus for compensating for variations in the output signal of a color sensor due to varying temperature of the color sensor. The color sensor receives light and generates an output signal that is based on the received light. The temperature compensati... | 08/29/2006 |
| 7081609 | Light-receiving circuit capable of compensating a temperature dependence of an optical sensitivity of a photodiode The present light-receiving circuit provides a function capable of adjusting the temperature dependence and the output of the bias supply circuit independently. The light-receiving circuit includes a bias supply circuit, a voltage divider and a temperature compensat... | 07/25/2006 |
| 7068362 | Expendable beam transmissometer The present invention provides apparatus for a beam transmissometer. In an embodiment, the beam transmissometer includes a LED signal source, collimating apparatus, a retroreflector that directs the projected beam, imaging apparatus that directs the beam onto a dete... | 06/27/2006 |
| 7060970 | Temperature compensating device for APD optical receiver Disclosed is a temperature-compensating device for an APD optical-receiver system using an APD (Avalanche Photo Diode). The device includes a temperature-compensating circuit which employs a digital potentiometer capable of linear compensation through data look-up i... | 06/13/2006 |
| 7040099 | Cryostat A cryostat having a connecting branch which is connected to a coolant chamber and is open on the end side. The connecting branch expands from an inside diameter to an outside diameter. ... | 05/09/2006 |
