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US20110180693 PHOTODIODE FRONT END WITH IMPROVED POWER SUPPLY REJECTION RATIO (PSRR)  
An area effective system and method for improving power supply rejection ratio (PSRR) in an optical sensor front end, is provided. Moreover, low pass filter (LPF) that enables the reference...
US20140042304 IMAGING PIXELS AND RELATED METHODS  
An improved CMOS pixel with a combination of analog and digital readouts to provide a large pixel dynamic range without compromising low-light performance using a comparator to test the value of...
US20050001152 Method for calibrating an optoelectronic device using apd bit error rate  
Methods and processes are disclosed for calibrating optoelectronic devices, such as optoelectronic transceivers and optoelectronic receivers, based upon a measured avalanche photodiode bit error...
US20100308209 System for Charge-Domain Electron Subtraction in Demodulation Pixels and Method Therefor  
A method and system enable the subtraction of charge carrier packages in the low-noise charge domain, which is particularly interesting for the operation of demodulation pixels when high...
US20070138375 Image sensor, test system and test method for the same  
In one embodiment, the CMOS image sensor includes a plurality of pixels, and the plurality of pixels include active pixels and optical black pixels. At least one bias input structure is configured...
US20140198183 SENSING PIXEL AND IMAGE SENSOR INCLUDING SAME  
A depth-sensing pixel included in a three-dimensional (3D) image sensor includes: a photoelectric conversion device configured to generate an electrical charge by converting modulated light...
US20090140127 Image sensor, test system and test method for the same  
In one embodiment, the CMOS image sensor includes a plurality of pixels, and the plurality of pixels include active pixels and optical black pixels. At least one bias input structure is configured...
US20070132867 Multimode CMOS Image Sensor  
Methods and devices for a multi-mode CMOS image sensor are presented. In one respect, the methods can provide varying at least one of a plurality of control signals of a pixel of a CMOS image...
US20060219873 Detection system for a flow cytometer  
The detection system 10 of the first preferred embodiment is preferably designed to be integrated into a flow cytometer having an interrogation zone 12. The detection system 10 includes a detector...
US20070120045 Organic photoelectric conversion device and stack type photoelectric conversion device  
An organic photoelectric conversion device comprising; a lower electrode; an organic layer; and an upper electrode provided in this order, in which at least one of the lower electrode and the...
US20140191115 SPAD SENSOR CIRCUIT WITH BIASING CIRCUIT  
A deep SPAD structure uses the substrate as the anode terminal of its multiplication p-n junction. A bias voltage for the SPAD (in excess of the SPAD's breakdown voltage) is coupled to the SPAD's...
US20100123771 Pixel circuit, photoelectric converter, and image sensing system including the pixel circuit and the photoelectric converter  
Provided are a pixel circuit, a photoelectric converter, and an image sensing system thereof. The pixel circuit includes a photodiode and an output unit. The photodiode generates a first photo...
US20060118697 Liquid crystal display apparatus, light-sensing element and apparatus for controlling luminance of a light source  
A liquid crystal display apparatus includes an LCD panel assembly. A backlight assembly includes a light source that irradiates the LCD panel assembly. A light-sensing part generates a detection...
US20060175529 Large-area detector  
A solid state photodetector is disclosed comprising a multiplicity of photodetector elements, each element using clamped Geiger mode gain to achieve high sensitivity and high speed. The elements...
US20060231745 Method and circuit arrangement for driving light-emitting diodes  
A circuit arrangement includes a first switch device and at least a second switch device. The first switch device is operably coupled to alternately switch on and off a first operating current to...
US20060124832 Wide dynamic range photodetector  
The invention provides a means of enhancing the dynamic range and linearity of photodetectors and imaging photodetector arrays. This is achieved by combining Geiger mode avalanche photodiodes...
US20070045520 Photoelectric conversion device and imaging device  
A photoelectric conversion device comprising: a substrate; a conducting layer; a photoelectric conversion layer; and a transparent conducting layer provided in this order, wherein the transparent...
US20090236502 OPTICAL RECEIVER UTILIZING APD AND CONTROL METHOD THEREOF  
An optical receiver includes an avalanche photodiode inputting light under a bias voltage, a current monitoring unit configured to monitor a photocurrent flowing through the avalanche diode, and a...
US20070051877 Optical transmitter-receiver, optical transmitter-receiver module, and optical communication device  
An optical transmitter-receiver includes: an optical module including a metal package housing at least a light receiving element and a light emitting element; a circuit board for...
US20060131484 High-dynamic range image sensors  
The dynamic range of existing CMOS image sensors is limited. The present invention introduces an extended dynamic range CMOS pixel sensor circuit. The extended dynamic range CMOS pixel sensor...
US20090140125 IMAGING DEVICE  
The present invention provides an imaging device where the temperature of an imaging area of the imaging device is accurately detected to perform precise temperature compensation and the imaging...
US20050001150 Light-receiving circuit that protects breakdown of the avalanche photodiode by the photo current generated thereby  
The present invention provides a light-receiving circuit that protects the breakdown of the avalanche photodiode (APD) by the photo current. The light-receiving circuit of the present invention...
US20070194210 Light emitting apparatus and control method thereof  
A light emitting apparatus and control method are provided. The light emitting apparatus includes a light emitting part; a power supply which applies a voltage to the light emitting part; a switch...
US20060192087 Two-dimensional CMOS-based flat panel imaging sensor  
The present invention provides a large-area flat plate detector. The detector includes a conversion layer which converts incident electromagnetic radiation into electric charges. The detector has...
US20060016964 Light quantity detection circuit  
A detection circuit which converts an output current into a voltage is added to a photosensor of a thin film transistor. Thereby, a very small current can be converted into a voltage in a desired...
US20140321862 PHOTON DETECTOR AND A PHOTON DETECTION METHOD  
A photon detection system is provided comprising a photon detector, configured to detect photons during intervals when in a receiving state and to output a signal when a photon is received, a...
US20100231881 LITHOGRAPHIC APPARATUS AND DEVICE MANUFACTURING METHOD  
The invention provides a level sensor configured to measure a height level of a substrate comprising: a projection unit to project a measurement beam on the substrate, a detection unit to receive...
US20130188085 IMAGE SENSORS HAVING REDUCED DARK CURRENT AND IMAGING DEVICES HAVING THE SAME  
An image sensor includes a photo detector for accumulating charges in response to an incident light, a floating diffusion node, a first reset unit connected between a supply voltage node and the...
US20050041292 Visible wavelength detector systems and filters therefor  
A visible wavelength detector and method of making the same is disclosed. A visible wavelength detector includes a semiconductor structure that converts electromagnetic energy into an electrical...
US20090236501 PHOTON DETECTION METHOD AND CIRCUIT HAVING PHASE ADJUSTER  
A photon detection circuit in which photon detection is performed by applying gate pulses to a light-receiving element at predetermined periods, includes: a gate-period waveform averaging section...
US20070181783 Differential Color Sensor Without Filters  
A semiconductor color sensor implemented without the use of color filters. Fabricating photodiodes using different semiconductor materials provide photodiodes with different sensitivities vs....
US20070131847 Optical detector  
An optical detector including an avalanche photodiode (APD) and protection circuitry for protecting the APD from excessive power dissipation therewithin, wherein the protection circuitry includes...
US20060118702 Illuminated and non-illuminated photodiodes for monitoring and controlling AC and DC components of a laser beam  
Embodiments of the present invention utilize two photodiodes on the same substrate, one illuminated monitor photodiode to monitor an optical beam out of a back facet (or back scattered) of a...
US20050231263 Driver circuit  
A driver circuit of a light emitting element is improved in efficiency. The driver circuit is to drive a white LED and includes a charge transfer device, a capacitor connected to the charge...
US20120092254 PROXIMITY SENSOR WITH MOTION DETECTION  
A proximity sensor with movement detection is provided. The proximity sensor may provide a navigation function in response to movement of an object. The proximity sensor includes a driver operable...
US20110109781 SOLID STATE IMAGING DEVICE AND METHOD OF CONTROLLING THE SAME  
According to one embodiment, a solid state imaging device includes a first photodiode, a first transistor, a floating diffusion, a second transistor, a third transistor. The first photodiode...
US20070181781 Integrated optical transceiver  
An optical transceiver includes at least one light source and at least one detector mounted on the same surface of the same substrate. The detector is to receive light from other than a light...
US20120253141 METHODS AND SYSTEMS FOR PASSIVE PHOTOPLETHYSMOGRAPH SENSING  
Systems and methods are provided for passive photoplethysmograph sensing. A patient monitoring system may provide active sensing, passive sensing, or both. In some cases, a patient monitor may...
US20140239160 HIGH-SPEED OPTICAL RECEIVER MODULE AND METHOD OF MANUFACTURING THE SAME  
Provided is a photoreceiver module. The module includes: a ceramic substrate formed by stacking a plurality of metallic layers and a plurality of ceramic layers; a high frequency transmission line...
US20050224697 Light-receiving circuit capable of expanding a dynamic range of an optical input  
The present light-receiving circuit includes a light-receiving device, typically an avalanche photodiode (APD), a bias supply, a reference resistor and a feedback control circuit. The APD receives...
US20050263681 Active pixel having buried transistor  
An active pixel for an image sensor that has minimized 1/f noise. The active pixel includes an amplification transistor that is implemented as a “body current” transistor. This minimizes the...
US20070042736 Detection circuit and method of adjusting dectection circuit  
A gain control section (150) controls an attenuator (101) to change the level of a signal output from the attenuator (101) to variable amplifiers (121, 131) and at the same time controls the...
US20050285020 Optical unit, optical sensor, multichannel optical sensing apparatus, and method for manufacturing optical unit  
An optical unit is composed of transparent blocks and dichroic films that are different in wavelength range of a reflectible light beam. The transparent blocks are connected in a row so that the...
US20130214134 PHOTON DETECTOR  
A photon detection system comprising an avalanche photo-diode, said avalanche photodiode comprising a p-n junction formed from a first semiconductor layer having a first conductivity type and a...
US20100294917 Apparatus and Methods for Imaging  
For imaging, an electromagnetic radiation sensor is used to produce an output when illuminated by a modulated laser light. In use, the output is determined by a laser Doppler signal illuminating...
US20090230291 AUTOMATIC ANALYZER AND ANALYSIS SYSTEM USING PHOTOMULTIPLIER TUBE  
A photomultiplier tube is susceptible to noise at a low concentration and to saturation at a high concentration. It is necessary to make a measurement with an appropriate intensity of light to...
US20070034781 Low-level light detector and low-level light imaging apparatus  
A low-level light detector includes an avalanche photodiode (APD) to which is applied a bias voltage adjusted to produce a multiplication factor of not more than 30, and a capacitor for...
US20120256080 SELECTIVELY TRANSLUCENT WINDOW  
A system and method for controlling the intensity of light into a cabin space is provided. The system includes a controller in communication with a window. The window is configured to have...
US20070001101 Programmable rise/fall time control circuit  
An electronic device is provided such as a programmable rise/fall time control circuit, for example, that delivers a continuous and near linear rising/falling slope of a control signal, with...
US20050236557 Portable photo-controlled electrical power apparatus  
The invention is a portable photo-controlled electrical power apparatus that is responsive to daylight. The apparatus consists of: an outdoor grounded electrical plug connected by an electrical...
Matches 1 - 50 out of 91 1 2 >