Plural Detectors Patents (Class 356/222)
  • Patent number: 10677818
    Abstract: A dual circuit current loading analysis apparatus enables the efficient testing of an electrical circuit, particularly those in vehicular applications. The apparatus electrically loads two circuits simultaneously and compares those readings to a battery or power source. Circuit input ports and ports to attach to the positive and negative sides of the battery are provided and attached to a microcontroller, voltage measurement device and load test device. The results of the test are indicated on a display and LEDs.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: June 9, 2020
    Inventor: Cardell Damian Webster
  • Patent number: 10630053
    Abstract: Disclosed herein are various embodiments for laser apparatuses. In an example embodiment, the laser apparatus comprises (1) a laser-emitting epitaxial structure having a front and a back, wherein the laser-emitting epitaxial structure is back-emitting and comprises a plurality of laser regions within a single mesa structure, each laser region having an aperture through which laser beams are controllably emitted, (2) a micro-lens array located on the back of the laser-emitting epitaxial structure, wherein each micro-lens of the micro-lens array is aligned with a laser region of the laser-emitting epitaxial structure, and (3) a non-coherent beam combiner positioned to non-coherently combine a plurality of laser beams emitted from the apertures.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: April 21, 2020
    Assignee: OPTIPULSE INC.
    Inventor: John Richard Joseph
  • Patent number: 10598755
    Abstract: A solar monitoring system for measuring solar radiation intensity comprising a tracking unit having two-axis movement comprising, head mounted with first and second irradiation measuring units, and a controller. The first irradiation measuring unit comprises a direct normal irradiance (DNI) sensor and the second irradiation measuring unit includes a diffuse horizontal irradiance (DHI) sensor and a global horizontal irradiance (GHI) sensor. The controller receives inputs from the sensors or a software program configured to control orientation of the image capturing head so that the DNI sensor is always exposed to the sun, and the shading disc is always directly between the DHI sensor and the sun.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: March 24, 2020
    Assignee: AMRITA VISHWA VIDYAPEETHAM
    Inventors: Joshua David Freeman, Rahul Kumar, Krishnashree Achuthanad
  • Patent number: 10120267
    Abstract: A method of re-configuring a lighting arrangement (120-170) used to light a scene (100) which is to be captured by an image capture device (110), the method including the steps of: obtaining an initial image of the scene (100) using an initial configuration (190) of the lighting arrangement; developing an image content map identifying at least one scene characteristic of at least a part of the scene (100) captured in the initial image; determining a desired aesthetic effect for a further image to be captured based on the scene (100); in accordance with the at least one scene characteristic identified in the image content map, selecting from a plurality of aesthetic factors at least one aesthetic factor involving adjustment in order to achieve the determined desired aesthetic effect for the further image; and developing at least one lighting parameter for re-configuring the lighting arrangement (120-170), wherein the at least one lighting parameter corresponds with the at least one selected aesthetic factor.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: November 6, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nicolas Pierre Marie Frederic Bonnier, Geoffrey John Woolfe
  • Patent number: 10067249
    Abstract: Radiation-sensitive material embedded in a disposable radiochemistry device gives the device the additional capability of recording radiation dose, for readout at a later time. There is provided a device comprising means for the introduction of a precursor compound, means for the introduction of a radionuclide, a reaction vessel for reacting said precursor compound and said suitable source of a radionuclide to obtain a radiolabelled compound, and one or more pieces of radiation-sensitive material embedded into said device wherein at least one of said pieces is positioned to be exposed to radioactivity associated with said radiolabelled compound.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: September 4, 2018
    Assignee: GE Healthcare Limited
    Inventors: Alok M. Srivastava, Victor Samper, Stefan Riese
  • Patent number: 10018256
    Abstract: A block-and-tackle transmission includes a timing belt input pinion, a timing belt, two or more shuttles, an output cable, and an output hub. The timing belt input pinion is for receiving input power. The timing belt is driven by the input pinion. The timing belt causes two shuttles of the two or more shuttles to move in opposing directions. Opposing ends of the output cable are pulled by two of the two or more shuttles. The output cable causes the output hub to transmit output power.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: July 10, 2018
    Assignee: X Development LLC
    Inventors: Lee Magnusson, Matt Carney, Aaron Edsinger, Jeff Weber, Philip Mullins
  • Patent number: 9913586
    Abstract: A pulse wave sensor includes: a light emitting unit configured to emit light onto a living body; a light receiving unit configured to receive light transmitted through or reflected from the living body based on the light from the light emitting unit; a pulse wave detecting unit configured to detect a pulse wave of the living body based on a result of light reception by the light receiving unit when the light is emitted from the light emitting unit with a normal light emission intensity; and a light emission intensity adjusting unit configured to cause the light emitting unit to emit light with a predetermined test light emission intensity in a test period prior to the detection of the pulse wave, and set the normal light emission intensity using detection light reception intensity in the light receiving unit by the light emission and a predetermined reference light reception intensity.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: March 13, 2018
    Assignee: Rohm Co., Ltd.
    Inventor: Koji Terumoto
  • Patent number: 9658831
    Abstract: An optical random number generator has: a light source (2) for randomly emitting photons (9); an array (3) of single photon avalanche diodes for detecting the photons (9) provided by the light source (2), wherein the array (3) of single photon avalanche diodes is positioned in a predefined distance (d) to the light source (2); and a control (10) coupled to the array (3) of single photon avalanche diodes and for determining an arrival time of the photons (9) detected by each of the single photon avalanche diodes of the array (3) of single photon avalanche diodes, and for generating a random number on the basis of the arrival time.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: May 23, 2017
    Assignee: SONY CORPORATION
    Inventors: Piergiorgio Sartor, Klaus Zimmermann
  • Patent number: 9500520
    Abstract: An optical measurement apparatus includes: a hollow cylindrical member having one plane with a first opening and the other plane with a second opening; a rotation mechanism for rotating the cylindrical member about a first axis; a support unit for arranging a light source at a measurement position which is on the first axis and from which the emitted light enters the cylindrical member through the first opening; a first reflection unit arranged inside the cylindrical member for reflecting the light emitted from the light source and entering through the first opening; a second reflection unit for reflecting the light inside the cylindrical member and propagating the light through the second opening along the first axis to the outside of the cylindrical member; and at least one third reflection unit for causing the light reflected by the first reflection unit to be incident on the second reflection unit.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: November 22, 2016
    Assignee: OTSUKA ELECTRONICS CO., LTD.
    Inventors: Kazuaki Ohkubo, Hisashi Shiraiwa
  • Patent number: 9196287
    Abstract: An objective lens driving unit including a moving structure to which an objective lens and a driving coil are operatively installed, a static structure which includes a magnetic circuit corresponding to the driving coil, a plurality of suspension wires each of which has a first end and a second end, the first end being operatively connected to the static structure, and the second end being operatively connected to the moving structure, and circuit boards operatively installed to the moving structure, the circuit boards including a plurality of wiring layers, wherein the wiring layers include first terminals to which the driving coil is connected and second terminals to which the second end of each of the plurality of is connected.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 24, 2015
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventor: Young-bin Lee
  • Publication number: 20150146197
    Abstract: A mobile apparatus is provided for measuring photometric characteristics of airport marker lights. The mobile apparatus includes a measuring rod configured to be moved above the marker lights to be checked, in light beams emitted by these marker lights, and a device for measuring the distance between the measuring rod and the marker lights to be checked. The measuring rod carries at least one photometric sensor and includes a device for acquiring and processing the signals emitted by the photometric sensor or sensors during its movement, as a function of the distance measured between the measuring rod and the marker lights to be checked. The device for acquisition and processing is configured to generate a set of data representing photometric characteristics of each marker light checked.
    Type: Application
    Filed: September 13, 2012
    Publication date: May 28, 2015
    Applicant: FB TECHNOLOGY
    Inventor: Lionel Le Cam
  • Patent number: 9041917
    Abstract: The range image sensor is a range image sensor which is provided on a semiconductor substrate with an imaging region composed of a plurality of two-dimensionally arranged units (pixel P), thereby obtaining a range image on the basis of charge quantities QL, QR output from the units. One of the units is provided with a charge generating region (region outside a transfer electrode 5) where charges are generated in response to incident light, at least two semiconductor regions 3 which are arranged spatially apart to collect charges from the charge generating region, and a transfer electrode 5 which is installed at each periphery of the semiconductor region 3, given a charge transfer signal different in phase, and surrounding the semiconductor region 3.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: May 26, 2015
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Mitsuhito Mase, Takashi Suzuki
  • Publication number: 20150036126
    Abstract: There is provided a semiconductor integrated circuit for an optical sensor for receiving environmental light through a cover member that attenuates visible light and transmits infrared light and a collecting lens, performing luminosity factor correction based on an amount of received light, and detecting an illuminance, wherein the semiconductor integrated circuit includes a first light receiving element having a first spectral property; a second light receiving element having a second spectral property; and a luminosity factor correction unit configured to perform the luminosity factor correction according to output of the first light receiving element and output of the second light receiving element, wherein the luminosity factor correction unit includes an AD conversion unit performed by time division on the output of the first light receiving element and the output of the second light receiving element, and a calculating unit subtracting digital signals obtained by the conversion.
    Type: Application
    Filed: July 15, 2014
    Publication date: February 5, 2015
    Applicants: MITSUMI ELECTRIC CO., LTD., EVERLIGHT ELECTRONICS CO., LTD.
    Inventors: Yuya KAWASAKI, Markus OBERASCHER
  • Patent number: 8902415
    Abstract: A luminous intensity test device includes an optical frequency converter, a display, and a processor. The optical frequency converter selectively converts at least a portion of light emitted by a light source into a digital signal. The display displays a color selection interface. The processor processes the digital signal and obtains the luminous intensity. When a tester inputs a color parameter into the color selection interface via an input device, the optical frequency converter converts a kind of light to the digital signal and then the processor processes the digital signal to obtain a luminous intensity and display the luminous intensity on the display.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: December 2, 2014
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chun-Yan Yang, Yu-Cui Zhou, Na-Na Zhai, Qiao-Na Sheng, Xiao-Jun Chen, Jiang-Feng Shan
  • Patent number: 8872093
    Abstract: An electronic device may be provided with an image sensor for capturing digital images. The image sensor may be used as part of image-sensor-based ambient light sensing circuitry for producing ambient light sensor readings. The image-sensor-based ambient light sensing circuitry may include a reference array. The reference array may be formed from an array of light sensor elements that are matched to elements in the image sensor but that are covered with a light blocking material. Control circuitry can measure current flow into the reference array and the image sensor array and can use current measurements from these arrays in producing a calibrated ambient light sensor reading. The control circuitry may make current measurements by measuring a decay time associated with the voltage of a discharging capacitor. A comparator, pulse generator, and switch may be used in periodically recharging the capacitor. The capacitor may be adjusted to ensure accurate readings.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: October 28, 2014
    Assignee: Apple Inc.
    Inventors: Chiajen Lee, Anup Sharma, Xiaofeng Fan
  • Patent number: 8865473
    Abstract: A luminescence detecting apparatus and method for analyzing luminescent samples is disclosed. A detecting apparatus may be configured so that light from luminescent samples pass through a collimator, a first lens, a filter, and a camera lens, whereupon an image is created by the optics on the charge-coupled device (CCD) camera. The detecting apparatus may further include central processing control of all operations, multiple wavelength filter wheel, and/or a robot for handling of samples and reagents.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: October 21, 2014
    Assignee: Applied Biosystems, LLC
    Inventors: Michael Gambini, Jeff Levi, John Voyta, Bruce E. DeSimas, II, Edward Lakatos, Israel Metal, George Sabak, Yongdong Wang, Susan A. Atwood-Stone
  • Publication number: 20140293276
    Abstract: A method for controlling a light source associated with an environment includes: receiving, over a wireless mesh network and by a control node corresponding to the light source, a first light intensity value for the environment from a first sensor node; calculating, by the control node, a resulting light intensity (RLI) value based on the first intensity value; determining, by the control node, that the RLI value exceeds a light intensity threshold; and modifying, by the control node and in response to determining the RLI value exceeds the light intensity threshold, an output of the first light source.
    Type: Application
    Filed: March 31, 2014
    Publication date: October 2, 2014
    Applicant: Silver Spring Networks, Inc.
    Inventors: Sterling Hughes, Jana Van Greunen, Will E. San Filippo, III
  • Patent number: 8836932
    Abstract: Disclosed is an inspecting equipment for inspecting a light emission characteristic of a display screen includes: a carrying device provided for carrying the display screen, a cover device and a data analyzing device. The cover device has a detecting surface provided with a plurality of luminance detectors, and covers an emitting surface of the display screen to form a darkroom between the cover device and the detecting surface. A plurality of corresponding luminance information is generated by the luminance detectors provided for detecting a plurality of measuring zones of the emitting surface. The data analyzing device receives the luminance information and analyzes the light emission characteristic of the display screen according to the luminance information. And, it is thus able to rapidly inspect the light emission characteristic of the display screen during manufacture process, and is easy to be applied to a present producing line.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: September 16, 2014
    Assignee: Taiwan Power Testing Technology Co., Ltd.
    Inventor: Yu-Chiang Lin
  • Patent number: 8810866
    Abstract: An optical device is disclosed, including a surface emitting laser element having a surface emitting laser which emits a light in a direction which is perpendicular to a substrate face; a light receiving element which monitors the light of the surface emitting laser; a package provided with a region on which the surface emitting laser element and the light receiving element are provided; and a lid which has a window through which passes the light of the surface emitting laser, the window being formed with a transparent member, and which covers the surface emitting laser element and the light receiving element.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: August 19, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Toshishige Fujii
  • Patent number: 8705025
    Abstract: For transferring optical energy, a first multimode wave guide transmits radiant energy with a homogenized beam to a first plurality of optical sensors of an array of optical sensors. The array measures the homogenized radiant energy. Each optical sensor of the first plurality of optical sensors measures a pixelized portion of the homogenized radiant energy. A method and system also perform the functions of the apparatus.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: April 22, 2014
    Assignee: Utah State University Research Foundation
    Inventors: Blake Crowther, James Peterson
  • Patent number: 8599364
    Abstract: The range image sensor is a range image sensor which is provided on a semiconductor substrate with an imaging region composed of a plurality of two-dimensionally arranged units (pixel P), thereby obtaining a range image on the basis of charge quantities QL, QR output from the units. One of the units is provided with a charge generating region (region outside a transfer electrode 5) where charges are generated in response to incident light, at least two semiconductor regions 3 which are arranged spatially apart to collect charges from the charge generating region, and a transfer electrode 5 which is installed at each periphery of the semiconductor region 3, given a charge transfer signal different in phase, and surrounding the semiconductor region 3.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: December 3, 2013
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Mitsuhito Mase, Takashi Suzuki
  • Patent number: 8592744
    Abstract: A light sensor is used to detect ambient light conditions. According to an example embodiment, a light sensor (112) detects color temperature and, in some instances, intensity characteristics of ambient light (120, 130, 140) in an environment and uses these detected characteristics (116) to determine the location of the sensor relative to natural and artificial light sources. This location determination is used to selectively operate circuits in a device such as a hand-held telephone, computer device or personal data assistant (PDA).
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: November 26, 2013
    Assignee: NXP B.V.
    Inventors: Rob Van Dalen, Sergio Masferrer Oncala
  • Publication number: 20130301039
    Abstract: A luminous intensity test device includes an optical frequency converter, a display, and a processor. The optical frequency converter selectively converts at least a portion of light emitted by a light source into a digital signal. The display displays a color selection interface. The processor processes the digital signal and obtains the luminous intensity. When a tester inputs a color parameter into the color selection interface via an input device, the optical frequency converter converts a kind of light to the digital signal and then the processor processes the digital signal to obtain a luminous intensity and display the luminous intensity on the display.
    Type: Application
    Filed: May 3, 2013
    Publication date: November 14, 2013
    Inventors: CHUN-YAN YANG, YU-CUI ZHOU, NA-NA ZHAI, QIAO-NA SHENG, XIAO-JUN CHEN, JIANG-FENG SHAN
  • Patent number: 8582098
    Abstract: A fiberized single photon sensitive spectrometer based on a 32-channel PMT sensor is highly sensitive with broad detection dynamic range. The spectrometer enables accurate and high speed detection, identification and analysis of biological samples labeled with multiple fluorescent markers, such as compositions of multi-color fluorescence signals or radiation emitted by multiple fluorescence dyes. A fiberized optical input of the spectrometer allows an easy and efficient coupling to any measurement system based on fiber collection of the analyzed fluorescence. The spectrometer provides highly accurate DNA sequencing. A 32 channel PMT single photon detector has a detection dynamic range of more than 20 bits and has a frame rate of about 3300 frames per second. The dynamic range of the detector's pixels reaches 108 photocounts per second.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: November 12, 2013
    Assignee: The Research Foundation of State University of New York
    Inventors: Andriy Tsupryk, Ivan Tovkach, Dmitriy Gavrilov, Vera Gorfinkel, Boris Gorbovitski, Dmytro Gudkov, Tetyana Gudkova
  • Patent number: 8570503
    Abstract: A noninvasive physiological sensor for measuring one or more physiological parameters of a medical patient can include a heat sink that can direct heat away from the light source.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: October 29, 2013
    Assignee: Cercacor Laboratories, Inc.
    Inventors: Hung Vo, Marcelo Lamego, Sean Merritt, Cristiano Dalvi, Johannes Bruinsma, Jeroen Poeze, Ferdyan Lesmana, Greg Olsen, Massi Joe E. Kiani
  • Patent number: 8562150
    Abstract: A projection type display apparatus in which an inclination and a positional deviation of optical axes among a plurality of light sources can be easily corrected to obtain a high quality projection image. Green, blue and red laser beams emitted from light sources are converted into collimated beams by condenser lenses, and the positions and angles of the optical axes of the beams of the three colors are evaluated by position detection imaging device and angle detection imaging device, respectively. The positions and angles of the light sources are adjusted by respective actuators so that the positions and angles of the optical axes match each other. Consequently, the laser beams emitted from the light sources can be combined with high accuracy to thereby realize a high definition projection type display apparatus.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: October 22, 2013
    Assignee: Hitachi, Ltd.
    Inventor: Jiro Hashizume
  • Patent number: 8564765
    Abstract: An optical measurement system includes a holder, a bracket, a plurality of optical sensors, a motor and a processing unit. The holder is provided for holding a test light source at the origin of a spherical coordinate system. The optical sensors are located on the bracket at different elevation angles with respect to the origin. Moreover, the optical sensors are spaced the same radial distance apart from the origin to aim at the test light source. The motor is configured to drive either the holder or the bracket to rotate such that the test light source at the origin is able to relatively rotate with respect to the optical sensors about a zenith axis of the spherical coordinate system. The processing unit is coupled to the optical sensors for processing of data captured from the optical sensors.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: October 22, 2013
    Assignee: B&M Optics Co., Ltd.
    Inventor: Hung-Pin Kuo
  • Patent number: 8559006
    Abstract: A particulate detector (10) comprises a radiation source (12) arranged to emit radiation in at least first and second predetermined wavebands towards a sampling region (18) suspected of containing particulates, and a detection element (14), shielded from the radiation source (12), and arranged to detect radiation from the sampling region (18) at least first and second instances. The radiation source (12) is such that the emissions in the wavebands temporarily overlap. The detector is such that, at the instances at which the radiation is detected, the relative contributions from the emissions in each predetermined waveband are distinguishable, thereby allowing characteristics of the particulates to be determined. The radiation source (12) may comprise a light emitting diode (24).
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: October 15, 2013
    Assignee: Thorn Security Limited
    Inventors: Stephen John Penney, John E. A. Shaw, Paul J. Taylor, Steven Ian Bennett
  • Patent number: 8416401
    Abstract: An area dosimeter for measuring the ambient equivalent dose of photon radiation with a diffuser, and a detector card with at least one pair of detection elements, preferably LiF-chips. A first of the two detection elements is positioned between two filters in order to spectrally filter the photon radiation. A second of the two detection elements is not positioned between such filters in order that the photon radiation arriving at the second detection element will have a different spectral distribution from the spectrally filtered photon radiation arriving at the first detection element. The two measurement values are used to obtain a weighted sum in order to achieve an optimized response characteristic.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: April 9, 2013
    Assignee: GSI Helmholtzzentrum fur Schwerionenforschung GmbH
    Inventors: Georg Fehrenbacher, Johannes Georg Festag, Sebastian Grosam, Karsten Vogt
  • Patent number: 8289178
    Abstract: A system for analyzing smoke has a plurality of units, wherein each unit includes an optical emitter for alternately directing horizontally and vertically polarized light along a beam path, and into a smoke cloud, to generate scattered light. A horizontally polarized detector and a vertically polarized detector are positioned at different locations, but at a same distance and scattering angle relative to the beam path. Each unit has a different wavelength. A computer receives signals from the detectors of all units, in response to each emitter, for analysis of the smoke.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: October 16, 2012
    Assignee: Volution
    Inventors: Michael S. Slemon, Charles S. Slemon
  • Patent number: 8278114
    Abstract: A luminescence detecting apparatus and method for analyzing luminescent samples is disclosed. A detecting apparatus may be configured so that light from luminescent samples pass through a collimator, a a first lens, a filter, and a camera lens, whereupon an image is created by the optics on the charge-coupled device (CCD) camera. The detecting apparatus may further include central processing control of all operations, multiple wavelength filter wheel, and/or a robot for handling of samples and reagents.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: October 2, 2012
    Assignee: Applied Biosystems, LLC
    Inventors: Michael Gambini, Jeff Levi, John Voyta, John Atwood, Susan Atwood-Stone, legal representative, Bruce De Simas, Edward Lakatos, Israel Metal, George Sabak, Yongdong Wang
  • Publication number: 20120229800
    Abstract: Generally described, one or more embodiments of the present disclosure are directed to pulse oximeter test instruments and methods for testing pulse oximeters. The pulse oximeter test instruments may be configured to sense light at different wavelengths simultaneously. In some embodiments, light pulses having a wavelength above a particular threshold may be detected and used to test measurements made by a pulse oximeter. In that regard, the pulse oximeter test instruments disclosed herein are able to provide improved accuracy and more reliable test results over prior art pulse oximeter test instruments.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 13, 2012
    Applicant: FLUKE CORPORATION
    Inventor: Tom West
  • Patent number: 8259293
    Abstract: An avalanche photodiode is disclosed. The avalanche photodiode includes a substrate of a first conductivity type. A first well of a second conductivity type is formed within the substrate. A second well of the second conductivity type is formed substantially overlying and extending into the first well. A heavily doped region of the first conductivity type is formed substantially overlying and extending into the first well, the junction between the heavily doped region and the second well forming an avalanche multiplication region. A guard ring is formed from a first conductivity material positioned substantially about the periphery of the multiplication region at least partially underlying the heavily doped region. An outer well ring of the second conductivity type is formed about the perimeter of the deep well and the guard ring.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: September 4, 2012
    Assignee: Johns Hopkins University
    Inventors: Andreas G. Andreou, Miriam Adlerstein Marwick, Philippe O. Pouliquen
  • Patent number: 8218137
    Abstract: An integrated circuit memory device includes a refresh control circuit that generates an internal memory refresh command signal having a period that is changed relative to a period of an external memory refresh command signal received by the memory device. This change in the period of the internal memory refresh command may be in response to detecting a change in temperature of the memory device. In particular, the refresh control circuit is configured so that the period of the internal memory refresh command signal is increased in response to detecting a reduction in temperature of the memory device.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: July 10, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-Sook Noh, Young-Hun Seo, Jong-Hyun Choi
  • Patent number: 8203704
    Abstract: The present disclosure relates to a sensor having a set of photodetectors that are arranged at various locations to enable the measurement of blood glucose. The photodetectors are arranged across multiple locations. For example, the detector may comprise multiple photodetector arrays that are arranged to have a sufficient difference in mean path length to allow for noise cancellation and noise reduction. Walls may be used in the detector to separate individual photodetectors and prevent mixing of detected optical radiation between the different locations on the measurement site. A window may also be employed to facilitate the passing of optical radiation at various wavelengths for measuring glucose in the tissue.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: June 19, 2012
    Assignee: Cercacor Laboratories, Inc.
    Inventors: Sean Merritt, Marcelo Lamego, Cristiano Dalvi, Hung Vo, Johannes Bruinsma, Jeroen Poeze, Ferdyan Lesmana, Massi Joe E. Kiani
  • Publication number: 20120147362
    Abstract: For transferring optical energy, a first multimode wave guide transmits radiant energy with a homogenized beam to a first plurality of optical sensors of an array of optical sensors. The array measures the homogenized radiant energy. Each optical sensor of the first plurality of optical sensors measures a pixelized portion of the homogenized radiant energy. A method and system also perform the functions of the apparatus.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 14, 2012
    Applicant: Utah State University Research Foundation
    Inventors: Blake Crowther, James Peterson
  • Publication number: 20120081700
    Abstract: An optical measurement system includes a holder, a bracket, a plurality of optical sensors, a motor and a processing unit. The holder is provided for holding a test light source at the origin of a spherical coordinate system. The optical sensors are located on the bracket at different elevation angles with respect to the origin. Moreover, the optical sensors are spaced the same radial distance apart from the origin to aim at the test light source. The motor is configured to drive either the holder or the bracket to rotate such that the test light source at the origin is able to relatively rotate with respect to the optical sensors about a zenith axis of the spherical coordinate system. The processing unit is coupled to the optical sensors for processing of data captured from the optical sensors.
    Type: Application
    Filed: September 9, 2011
    Publication date: April 5, 2012
    Inventor: Hung-Pin KUO
  • Patent number: 8128237
    Abstract: A computer implemented method for utilizing a plurality of self-activating display shaping devices to provide shape adjustment information for a digital image projected on a display is disclosed. In one embodiment, the plurality of display shaping devices are automatically activated, the plurality of display shaping devices defining a desired digital image shape for a display. In addition, the plurality of display shaping devices is utilized to identify an actual projected digital image shape. The actual projected digital image shape is then compared with the desired digital image shape for the display. Correction information is then provided for adjusting the actual projected digital image shape to approximate the desired digital image shape for the display.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: March 6, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Robert L. Cobene, Jeffrey M. DiCarlo, Glen E. Montgomery
  • Publication number: 20110316715
    Abstract: A mobile device including a solar battery having a light-receiving surface provided on a casing of the mobile device, an illuminance detector that detects an illuminance of light incident on the casing, an output section that outputs a state of light incident on the light-receiving surface of the solar battery, and a controller that controls the output section based on the illuminance detected by the illuminance detector.
    Type: Application
    Filed: April 8, 2011
    Publication date: December 29, 2011
    Inventors: Hiroshi KATO, Kimitaka BENISE, Jusuke SHIMURA, Yoshiaki INOUE, Yasuhide HOSODA
  • Publication number: 20110273705
    Abstract: A low cost sensing system that can measure both chlorophyll concentration and turbidity is provided. The system is an optical system that utilizes at least three light sensors for measuring side-scattered and forward scattered light, as well as fluorescence. The system is able to take optical density measurements, steady state fluorescence measurements and maximum fluorescence measurements, and can be configured for wireless control and data transmission. The system may also be housed in one or more fluidtight housings so as to make it submersible.
    Type: Application
    Filed: January 25, 2010
    Publication date: November 10, 2011
    Applicant: UNIVERSITY OF MARYLAND BALTIMORE COUNTY
    Inventors: Govind Rao, Hung Lam, Yordan Kostov, Leah Tolosa, Xudong Ge
  • Publication number: 20110273704
    Abstract: A solar radiation detector comprises a shading element that casts a shadow over one of a number of sensors disposed about the shading element. The shading element and the sensors are spaced in relation to each other that the shadow cast by the shading element always falls on one of the sensors, completely shading that one sensor, while at the same time leaves at least another one of the sensor completely exposed to direct solar radiation. The completely shaded sensor measures substantially only diffuse solar radiation.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 10, 2011
    Applicant: Li-Cor, Inc.
    Inventor: George Burba
  • Patent number: 7990528
    Abstract: A photosensitive chip, including: at least one set of photosensors substantially aligned in a Y direction; and a layer of non-transmissive material including a plurality of openings. Each opening in the plurality of openings includes a respective center line and overlaps only a portion of a respective photosensor so that only the portion of the respective photosensor is photosensitive. The respective center lines for openings for each set of photosensors are not collinear in the Y direction. In an example embodiment, the plurality of openings includes at least one row of openings substantially aligned in an X direction, orthogonal to the Y direction. In an example embodiment, each opening has an equal width in an X direction, orthogonal to the Y direction.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: August 2, 2011
    Assignee: Xerox Corporation
    Inventors: Paul A. Hosier, Jagdish C. Tandon
  • Publication number: 20110149274
    Abstract: An apparatus includes an array containing N sub-diffraction limit light sensors each having an associated light absorption activation threshold for switching from a reset state to an activated state, where the light absorption activation values lie within a range of values. The apparatus further includes a processor connected with a memory including computer program code, where the memory and computer program code are configured to, with the processor, cause the apparatus at least to perform estimating an intensity of light that illuminates the array based on electrical outputs of the array.
    Type: Application
    Filed: December 23, 2009
    Publication date: June 23, 2011
    Inventors: Tero P. Rissa, Samu T. Koskinen, Tuomo Maki-Marttunen, Matti Viikinkoski
  • Publication number: 20110066401
    Abstract: Energy converters are monitored to ensure that they are operating at acceptable levels. An expected output is predicted using mathematical modeling and compared to the actual output generated by the energy converter. When the difference is above a predetermined threshold, the level of underperformance, along with other parameters, are used to determine a possible cause of underperformance and actions that can be taken to increase the output to acceptable levels. The cause and actions are transmitted to personnel, who are dispatched to service the underperforming energy converter. By centrally locating the mathematical modeling, monitoring, and dispatching, multiple PV modules can be managed from a remote location. When monitoring photovoltaic modules, an irradiation sensor employs multiple photosensors oriented to detect not only the normal components of sunlight but also directional, diffused components of sunlight, thereby increasing the accuracy of the mathematical modeling.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 17, 2011
    Applicant: WATTMINDER, INC.
    Inventors: Stephen C. Yang, Robert M. Getsla
  • Patent number: 7847785
    Abstract: A circuit to appropriately adjust the emission intensity of LEDs of various colors. By means of a first optical sensor (11), the detection range of which includes the peak wavelengths of LEDs (10R), (10G), and (10B) of multiple colors and the detectable peak wavelength of which is shorter than the shortest peak wavelength of the LEDs (10R), (10G) and (10B), and a second optical sensor 12 the detectable peak wavelength of which is longer than the longest peak wavelength of the LEDs (10R), (10G), and (10B), the LEDs (10R), (10G), and (10B) of each color are lighted one color at a time and the emission intensity is measured. When the measurement result of the first optical sensor (11) indicates an increase and the measurement result of the second optical sensor indicates a decrease, it is known that the emitted light has shifted to a shorter wavelength, and in the opposite case, that it has shifted to a longer wavelength.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: December 7, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Shinichi Tanaka
  • Publication number: 20100302532
    Abstract: A method for determining the light intensity of a light signal in each of a plurality of spectral bands is disclosed and a method for fabricating a photodetector is also disclosed.
    Type: Application
    Filed: November 25, 2009
    Publication date: December 2, 2010
    Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.
    Inventors: Farn Hin Chen, Gim Eng Chew, Boon Keat Tan
  • Publication number: 20100302533
    Abstract: The invention consists of an area dosimeter for measuring the ambient equivalent dose (H*(10)) of photon radiation with a diffuser, a detector card with at least one pair of detection elements, preferably LiF-chips, whereby the first of the two detection elements is positioned between two filters in order to spectrally filter the photon radiation, whereby the second of the two detection elements is not positioned between such filters as those of the first detection element, in order that the photon radiation arriving at the second detection element have a different spectral distribution as the spectrally filtered photon radiation arriving at the first detection element. The two measurement values are used to obtain a weighted sum in order to achieve an optimized response characteristic, in particular in the range below 30 keV and if applicable in the range above 1.3 MeV.
    Type: Application
    Filed: November 7, 2008
    Publication date: December 2, 2010
    Inventors: Georg Fehrenbacher, Johannes Georg Festag, Sebastian Grosam, Karsten Vogt
  • Publication number: 20100259570
    Abstract: Provided is a photodetection device which is small in size and has excellent sensitivity. A photodetection device puts cathode terminals of photodiodes having different spectral characteristics into an open end state, and detects light intensity of a desired wavelength region according to a difference in electric charges that have been stored in those photodiodes in a given period of time. The photodiodes employ a system of storing electric charges, and hence even if a photocurrent is small, the photocurrent may be stored to obtain the electric charges required for detection, and the downsizing and high detection performance of a semiconductor device that forms the photodiodes may be achieved.
    Type: Application
    Filed: June 24, 2010
    Publication date: October 14, 2010
    Inventors: Toshihiko Omi, Isamu Fujii, Satoshi Machida, Toshiyuki Uchida
  • Publication number: 20100245809
    Abstract: An avalanche photodiode and a sensor array comprising an array of said avalanche photodiodes is disclosed. Then avalanche photodiode comprises a substrate of a first conductivity type; a first well of a second conductivity type formed within the substrate; a second well of the second conductivity type formed substantially overlying and extending into the first well; a heavily doped region of the first conductivity type formed substantially overlying and extending into the first well, the junction between the heavily doped region and the second well forming an avalanche multiplication region; a guard ring formed from a first conductivity material positioned substantially about the periphery of the multiplication region at least partially underlying the heavily doped region; and an outer well ring of the second conductivity type formed about the perimeter of the deep well and the guard ring.
    Type: Application
    Filed: March 17, 2008
    Publication date: September 30, 2010
    Applicant: JOHNS HOPKINS UNIVERSITY
    Inventors: Andreas G. Andreou, Miriam Adlerstein Marwick, Philippe O. Pouliquen
  • Publication number: 20100238432
    Abstract: Method and systems related to obstructing a first predefined portion of at least one defined wavelength of light incident upon a first photo-detector array; and detecting the at least one defined wavelength of light with a photo-detector in a second photo-detector array.
    Type: Application
    Filed: June 2, 2009
    Publication date: September 23, 2010
    Inventors: W. Daniel Hillis, Roderick A. Hyde, Nathan P. Myhrvold, Lowell L. Wood, JR.