Photocell Controlled Circuit Patents (Class 250/206)
  • Publication number: 20140263948
    Abstract: An optical biosensor is provided. The optical biosensor includes a biosensing unit, a detection unit, and a feedback circuit. The biosensing unit is configured to receive an input optical signal, sense a biomaterial, and generate a sensed optical signal. The detecting unit is configured to convert the sensed optical signal into an electrical signal and output the electrical signal as a detection signal. The feedback circuit is configured to output a feedback signal. The feedback signal is generated based on the detection signal and is changed according to a changed amount of a resonant wavelength of the biosensing unit.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 18, 2014
    Inventors: Kwang-hyun Lee, Seok-yong Hong
  • Patent number: 8829417
    Abstract: A device for detecting a presence of an object includes an optical phased array, a detector, a processing portion and an indicator. The optical phased array can transmit a first optical beam to a first location at a first time and can transmit a second optical beam to a second location at a second time. The detector can detect a first reflected beam based on the first optical beam and can detect a second reflected beam based on the second optical beam. The processing portion can determine the presence of the object based on the first reflected beam and the second reflected beam. The indicator can generate an indicator signal based on the presence of the object.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: September 9, 2014
    Assignee: The Johns Hopkins University
    Inventors: Jerry A. Krill, Michael J. O'Driscoll, Michael C. Gross, Stergios J. Papadakis, Gerald F. Ricciardi, Isaac N. Bankman, Joseph S. Peri
  • Publication number: 20140239150
    Abstract: Embodiments provide a method of evaluating luminance of a light source, including acquiring first data including a plurality of luminance values by measuring luminance of the light source, converting the first data into second data corresponding to a plurality of unit cells, acquiring a moving average of the second data, and acquiring a ripple factor. The ripple factor is represented by (Draw-Ma)/Ma, where Draw is the second data and Ma is the moving average.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Inventors: Sung Wook CHO, Ki Hyun KIM, Eun Hwa KIM
  • Publication number: 20140231625
    Abstract: An optical sensor apparatus includes an infrared light generating device, N first detection devices, a second detection device and a processing circuit. In addition to detecting infrared light, the N first detection devices further detect N different visible wavelength ranges, respectively. The second detection device is optically shielded from visible light and arranged for detecting infrared light. In a first sensing mode, the processing circuit obtains color information according to N first detection signals generated by the N first detection devices and a reference signal generated by the second detection device. In a second sensing mode, the N first detection devices and the second detection device generate (N+1) second detection signals when the infrared light generating device is activated, and generate (N+1) third detection signals when the infrared light generating device is deactivated.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Inventors: TOM CHANG, Kao-Pin Wu, Shang-Ming Hung, Chih-Jen Fang, Cheng-Ta Chuang
  • Publication number: 20140232917
    Abstract: A pixel 10 includes a photodiode PD which is provided between a first barrier region 21 forming a first potential barrier B1 and a second barrier region 27 forming a second potential barrier B2, a first floating diffusion region F1 which is provided adjacent to the first barrier region 21, and to which a first electric charge generated in the photodiode PD is transferred, and a second floating diffusion region F2 which is provided adjacent to the second barrier region 27, and into which a second electric charge generated in the photoelectric conversion region PD flows, and in which a part of the flowing-in second electric charge is accumulated. The second potential barrier B2 is lower than the first potential barrier B1.
    Type: Application
    Filed: July 25, 2012
    Publication date: August 21, 2014
    Inventors: Shoji Kawahito, Isamu Takai
  • Patent number: 8809825
    Abstract: A paper size detection device includes a central switch, at least two switches disposed to two opposite sides of the central switch at intervals, and at least a sensor corresponding to the two switches located at the two opposite sides of the central switch. The sensor can be designated as a light sensor. One switch triggers the sensor and the other switch is without triggering the sensor under an original no paper condition. So that a detection method of the paper size detection device that uses N light sensors to judge N*2 papers' size can be realized by virtue of the above-mentioned setting structure, N is a positive integer, such as 2, 3, 4 and so on. Thus, the paper size detection device has a simple structure and a lower manufacture cost, and the detection method of the paper size detection device is simplified, accordingly.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: August 19, 2014
    Assignee: Foxlink Image Technology Co., Ltd.
    Inventors: Wei-Xiang Tsai, Shih-Chung Liu
  • Publication number: 20140224961
    Abstract: A light sensor is provided that includes an exposed light transducer for accumulating charge in proportion to light incident thereon over an integration period; and a light-to-pulse circuit in communication with the exposed light transducer, the light-to-pulse circuit operative to output a pulse having a pulse width based on the charge accumulated by the exposed light transducer. The light-to-pulse circuit may include a one shot logic circuit that contributes to generation of the pulse. The light sensor may include an input/output pad, a capacitor provided at the input/output pad for blocking static electricity, an input low pass filter provided at the input/output pad for blocking electromagnetic interference, and/or a bandgap voltage reference circuit connected to a power source having a supply voltage level in a range of about 3.3V to about 5.0V, and for generating a set of stable reference voltages throughout the supply voltage level range.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 14, 2014
    Inventors: Barry K Nelson, Jon H. Bechtel, Daniel G. McMillan, Spencer D. Reese
  • Publication number: 20140217262
    Abstract: A method for detecting polarized light is disclosed. Providing a polarized light detection system including a photoresistor, a power source and a detection apparatus. The photoresistor includes a first electrode layer and a photosensitive material layer. The detection apparatus includes a current detection device and a computer analysis system. An incident light is irradiated onto a surface of the photoresistor. Polarization information of the incident light is identified by the photoresistor. Current change in the photoresistor is detected by the current detection device. The polarization information of the incident light is analyzed by the computer analysis system.
    Type: Application
    Filed: April 8, 2013
    Publication date: August 7, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., Tsinghua University
  • Patent number: 8796654
    Abstract: A probe needle is successively moved to a plurality of measurement points set in a measurement region on a sample so as to measure a z-displacement amount. An excitation control unit feedback-controls a piezoelectric element so that a vibration amplitude of a cantilever is constant in accordance with the detection output by a displacement detection unit. Moreover, a vertical displacement control unit feedback-controls a vertical position scan unit so as to obtain a constant distance between the probe needle and the sample according to a frequency shift by a frequency detection unit. When changes of outputs of two feedback loops at a certain measurement point are both within a predetermined range, a main control unit issues an instruction to a horizontal position control unit to rapidly move to the next measurement point. As a result, it is possible to adaptively decide such a measurement time that both of the two feedback controls at respective measurement points are established.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: August 5, 2014
    Assignee: Shimadzu Coporation
    Inventors: Masahiro Ohta, Noriaki Oyabu, Kenjiro Kimura, Shinichiro Ido, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Patent number: 8798961
    Abstract: A system for measuring quantum efficiency in a sample photovoltaic cell may include a Fourier transform infrared spectrometer. One or more light source for illuminating the photovoltaic cell in a wavelength range of interest are provided.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: August 5, 2014
    Assignee: First Solar, Inc.
    Inventors: Brady A. Johnson, Dmitriy Marinskiy
  • Patent number: 8796605
    Abstract: A single-photon receiver and method for detecting a single-photon are presented. The receiver comprises a SPAD that receives a gating signal having a fundamental frequency in the 100 MHz to multiple GHz range. The receiver further comprises a two-stage frequency filter for filtering the output of the SPAD, wherein the filter has: (1) a notch filter response at the fundamental frequency; and (2) a low-pass filter response whose cutoff frequency is less than the first harmonic of the fundamental frequency. As a result, the frequency filter removes substantially all the frequency components in the SPAD output without significant degradation of the signal quality but with reduced complexity, cost, and footprint requirement relative to receivers in the prior art.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: August 5, 2014
    Assignee: Princeton Lightwave, Inc.
    Inventors: William Paul Mordarski, Mark Allen Itzler
  • Publication number: 20140209788
    Abstract: Systems and methods for an improved solar/infrared conversion efficiency using multiple rectennas, one for each band of the spectrum. Each rectenna is optimally efficient for each spectrum band. An antenna receives at least one of a visible or infrared spectrum. Rectifying circuits coupled to the antenna generate a current based on a portion of the spectrum received by the at least one antenna. Each rectenna operates efficiently using a different operating voltage. The operating voltages are based on the selected load resistor and the current-voltage characteristics for the diode of the rectifying circuit at the associated spectrum portion.
    Type: Application
    Filed: October 25, 2013
    Publication date: July 31, 2014
    Applicant: THE REGENTS OF THE UNIVERSITY OF COLORADO, a body corporate
    Inventors: Garrett Moddel, Saumil Joshi
  • Publication number: 20140211204
    Abstract: The present invention provides compositions for making and methods of using a hand-held nucleic acid amplification device, comprising a disposable biochip with a series of sample wells, each sample well having a novel optical arrangement that includes a light-emitting diode (LED) and a single light capturing element (e.g. a photodiode) for quickly measuring light emissions from biological samples such as nucleic acid amplification reactions. Such a device can utilize isothermal amplification for obtaining detectable yields of amplified nucleic acid product in short time periods, for example, within seconds.
    Type: Application
    Filed: August 30, 2013
    Publication date: July 31, 2014
  • Publication number: 20140210891
    Abstract: A densitometer includes a plurality of light-emitting diodes (LEDs) and at least one sensor. The LEDs are activated one at a time in a sequential, repeatable order. Photonic energy from each LED is reflected off an entity and is incident upon the sensor(s). Circuitry samples or acquires signaling from the sensor(s) in accordance with the respective LED activations. Signaling from the densitometer can be used in controlling ink-jetting printers or other apparatus.
    Type: Application
    Filed: January 31, 2013
    Publication date: July 31, 2014
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Javier Gonzalez BRUNO, Marti Rius Rossell, Jordi Ferran Cases
  • Publication number: 20140211185
    Abstract: For angular resolved spectrometry a radiation beam is used having an illumination profile having four quadrants is used. The first and third quadrants are illuminated whereas the second and fourth quadrants aren't illuminated. The resulting pupil plane is thus also divided into four quadrants with only the zeroth order diffraction pattern appearing in the first and third quadrants and only the first order diffraction pattern appearing in the second and third quadrants.
    Type: Application
    Filed: April 1, 2014
    Publication date: July 31, 2014
    Applicant: ASML Netherlands B.V.
    Inventors: Hugo Augustinus Joseph Cramer, Antoine Gaston Marie Kiers, Henricus Petrus Maria Pellemans
  • Publication number: 20140209782
    Abstract: A method of monitoring a manufacturing process includes generating a measurement data by analyzing emission intensity of plasma emission light using a measurement device, the plasma emission light being generated when a plasma gas of a manufacturing process device is changed from an energy level corresponding to a high energy state to an energy level corresponding to a low energy state, generating a compensated value based on the measurement data, the compensated value being generated by offsetting a sensitivity change that is caused due to pollution of the manufacturing process device and the measurement device or measurement locations of the measurement device, and monitoring the manufacturing process based on the compensated value.
    Type: Application
    Filed: August 31, 2013
    Publication date: July 31, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventor: Young-Jae JUNG
  • Patent number: 8779341
    Abstract: A control unit sets a first control value for causing a charge accumulation unit to execute a first accumulation and obtaining first image data and a second control value for causing the charge accumulation unit to execute a second accumulation and obtaining second image data, depending on whether an operation mode set by a setting unit executes image recognition processing based on image data obtained through accumulation by the charge accumulation unit. If the operation mode set by the setting unit does not execute the image recognition processing, the control unit sets the first and second control values to be different from each other, even if an object field has a constant luminance.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: July 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yosuke Mine
  • Publication number: 20140191109
    Abstract: Apparatuses, systems, method, reagents, and kits for conducting assays as well as process for their preparation are described. They are particularly well suited for conducting automated analysis in a multi-well plate assay format.
    Type: Application
    Filed: January 3, 2014
    Publication date: July 10, 2014
    Inventors: Ian Chamberlin, Charles M. Clinton, Eli N. Glezer, Bandele Jeffrey-Coker, Manish Kochar, Sandor Kovacs, D.T. Le, Aaron Leimkuehler, George Sigal, Leo Tabakin, Jon Willoughby
  • Publication number: 20140191110
    Abstract: An electronic device may be provided with a touch screen display that is controlled based on information from a proximity sensor attached underneath a display layer. The proximity sensor may have a light source that emits infrared light and a light detector that detects reflected infrared light. When the electronic device is in the vicinity of a user's head, the proximity sensor may produce data indicative of the presence of the user's head. Variations in proximity sensor output due to smudges on the proximity sensor can be detected by providing the proximity sensor with an additional light source. The additional light source may be used to inject light into the display layer. The injected light may be guided within the display layer by total internal reflection. In the presence of smudge, the internally reflecting light may deviate from its normal propagation path.
    Type: Application
    Filed: January 10, 2013
    Publication date: July 10, 2014
    Applicant: Apple Inc.
    Inventor: Prashanth S. S. Holenarsipur
  • Publication number: 20140183331
    Abstract: A photoelectric conversion module includes a lens unit, a circuit board, and a photoelectric unit. The lens unit is positioned on the circuit board. The photoelectric unit is connected electrically with the circuit board and is optically coupled with the lens unit. A groove is defined on the circuit board. The photoelectric unit is located in the groove.
    Type: Application
    Filed: August 15, 2013
    Publication date: July 3, 2014
    Inventor: YI-ZHONG SHEU
  • Publication number: 20140175261
    Abstract: A physiological monitoring system may use photonic signals at one or more wavelengths to determine physiological parameters. During monitoring, a physiological sensor may become improperly positioned, which may affect the physiological attenuation of the photonic signals, and accordingly a detected light signal. The detected light signal may include an ambient light component and a signal component corresponding to the one or more wavelengths of light. One or both components may exhibit an interference signal component caused by environmental light. The physiological monitoring system may analyze the interference signal components to determine a sensor-off condition.
    Type: Application
    Filed: December 22, 2012
    Publication date: June 26, 2014
    Applicant: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • Publication number: 20140175262
    Abstract: There is provided optical analysis techniques in the scanning molecule counting method using the light measurement with a confocal or multiphoton microscope in which the measuring unit time in the light measurement is set to an appropriate value in order to surely detect an approximately bell shape profile of the signal of a light-emitting particle and avoid excessive increase data volume of time series light intensity data. The inventive optical analysis technique of detecting light of a light-emitting particle in a sample solution generates time series light intensity data of light from a light detection region detected during moving the position of the light detection region of a microscope in the sample solution and detects in the data a signal indicating light from each light-emitting particle individually. The measuring unit time is determined based on the size and the moving speed of the light detection region.
    Type: Application
    Filed: February 26, 2014
    Publication date: June 26, 2014
    Inventors: Hidetaka Nakata, Tetsuya Tanabe
  • Publication number: 20140170760
    Abstract: There is provided an optical analysis technique of detecting light of a light-emitting particle in a sample solution in the scanning molecule counting method using the light measurement with a confocal or multiphoton microscope, for suppressing the scattering in detected results of signals of light of light-emitting particles smaller and achieving the improvement of accuracy. The inventive technique comprises moving the position of a light detection region along a predetermined route for multiple circulation times by changing the optical path of the optical system; detecting light from the light detection region and generating time series light intensity data during the moving of the light detection region and detecting individually a signal indicating light from each light-emitting particle existing in the predetermined route using the time series light intensity data obtained in the circulating movements of the light detection region of multiple times.
    Type: Application
    Filed: February 24, 2014
    Publication date: June 19, 2014
    Inventors: Tetsuya Tanabe, Mitsushiro Yamaguchi
  • Publication number: 20140158861
    Abstract: A photosensitive input device includes a stylus, a photosensitive input panel including an induction layer, a photoelectric detecting circuit, a driving circuit, a controller, and a storage device. The induction layer includes a plurality of photosensitive units including a light-emitting element and a light-receiving element together. The photosensitive element outputs a current when struck by the light from the stylus, the current intensity being dependent on the wavelength of the emitted light. The photoelectric detecting circuit determines coordinates based on the induced current and the intensity of the induced current. The driving circuit generates a driving current or a reduced or a zero current in response, based on a pre-determined table and outputs the driving current to show the track of the stylus-light across the input panel, by illuminating the relevant light-emitting elements or by switching down or switching off the relevant light-emitting elements.
    Type: Application
    Filed: April 29, 2013
    Publication date: June 12, 2014
    Inventors: KAI XU, HUI YIN, CHUN-WEI PAN
  • Patent number: 8748858
    Abstract: A processing device includes a control section adapted to perform emission control of first and second light source sections based on a light reception result of a light receiving section adapted to receive a reflected light beam caused by an object reflecting irradiation light beams from the first and second light source sections, and a determination section adapted to determine a positional relationship of the object with respect to the first and second light source sections based on emission current control information for performing the emission control. The determination section determines the positional relationship of the object based on first period emission current control information as the emission current control information in a first period in which no object exists in the detection area and second period emission current control information as the emission current control information in a second period in which the object exists in the detection area.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: June 10, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Daisuke Nakanishi
  • Publication number: 20140145064
    Abstract: A photoelectric conversion device includes a circuit board, a light emitting module, a light receiving module, and an optical coupling lens. The circuit board includes two protrusions apart from each other. The light emitting module and the light receiving module are mounted on the circuit board and are apart from each other. The optical coupling lens includes a light incident surface, a first converging lens, a second converging lens and two through holes are defined therein for locating purposes. The first converging lens and the second converging lens are formed on the light incident surface. Centers of the through holes are aligned with centers of the protrusions to ensure the perfect alignment of the light emitting module with the first converging lens, and the perfect alignment of the light receiving module with the second converging lens.
    Type: Application
    Filed: April 26, 2013
    Publication date: May 29, 2014
    Inventor: YI HUNG
  • Publication number: 20140145065
    Abstract: Provided is a photoelectric sensor that enables intuitive sensitivity adjustment while ensuring a wide dynamic range, and ease grasp of an adjustment state. The photoelectric sensor includes: an adjusting device having a variable resistor embedded in at least one of a driving circuit and a light receiving circuit, and configured to change a resistance value of the variable resistor according to a rotational position of a rotatable adjusting element; an evaluator configured to generate a determination signal based on a comparison result between a light receiving signal superimposed on a reference level and a threshold value; a margin ration calculator configured to calculate a ratio of an amount of a light receiving signal in the light receiving signal superimposed on the reference level and a difference between the threshold value and the reference level as a margin ratio to be displayed.
    Type: Application
    Filed: October 1, 2013
    Publication date: May 29, 2014
    Applicant: Keyence Corporation
    Inventors: Toyoichi Uozumi, Kentaro Yamazaki
  • Patent number: 8735790
    Abstract: A microscope for examining an object includes a laser light source generating pulsed light so as to illuminate the object. A measuring system including a detector is adapted to detect detection light coming from the object and the measuring system generates a measurement signal based on the detection light. The microscope includes a programmable integrated circuit including a control element and at least one of a first delay element and a second delay element. The control element is configured to generate a first control signal adapted to control the detector and the measuring system. The control element is further configured to generate a second control signal adapted to control the laser light source. The first and second delay elements are configured to delay the first and second control signals, respectively.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: May 27, 2014
    Assignee: Leica Microsystems CMS GmbH
    Inventors: Ludger Schulte, Bernd Widzgowski
  • Publication number: 20140138518
    Abstract: An optical detection apparatus is configured to transmit pulses into a detection zone after one another in different directions which follow one another in a scanning direction over a scanning angle, to receive the radiation of the transmitted pulses returning from the detection zone, to generate a received signal with respect to each transmitted pulse, said received signal depending on the variation with time of the returning radiation of the transmitted pulse, and to average the received signals of a group of transmitted pulses to generate an averaged received signal. The angular extent relating to the scanning angle of at least one transmitted pulse of the group at a spacing from the detection apparatus disposed within the detection zone is at most 25 times the size of the angular spacing relating to the scanning angle between two transmitted pulses of the group directly adjacent one another in the scanning direction.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 22, 2014
    Applicant: SICK AG
    Inventor: Markus HAMMES
  • Publication number: 20140139710
    Abstract: An image sensor module includes a substrate, an image sensor, and a connecting plate. The substrate includes a supporting portion and an extending portion extending from one side of the supporting portion. The supporting portion includes an upper surface and a lower surface opposite to the upper surface. The supporting portion defines a through hole penetrating the upper surface and the lower surface and a receiving recess communicating the through hole on the lower surface. The thickness of the extending portion is less than the thickness of the supporting portion. The image sensor is received in the receiving recess and is electrically connected to the substrate. The connecting plate is electrically connected to the extending portion, the thickness of the connecting plate is less than or equal to the thickness difference between the extending portion and the supporting portion.
    Type: Application
    Filed: December 27, 2012
    Publication date: May 22, 2014
    Inventor: SHIN-WEN CHEN
  • Patent number: 8729919
    Abstract: With a light source evaluation device 10 according to the present invention and a solar cell evaluation device 1 employing the same, a dependency P (?, Ib) for each wavelength ? of a short-circuit current Ib generated by white bias light of a measurement target solar cell 2, which is pre-measured at each of a plurality (i) of irradiance levels, is regarded as a spectral responsivity Pi (?) at each irradiance level, and a value for adjusting a light quantity of an illumination light source 3 that illuminates the solar cell 2 is computed using a spectral responsivity Ps (?), which is computed using the spectral responsivity Pi (?), a pre-supplied spectral irradiance S (?) of reference sunlight, and a pre-measured spectral irradiance L (?) of the illumination light source 3.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: May 20, 2014
    Assignee: Konica Minolta Optics, Inc.
    Inventors: Yoshihiro Nishikawa, Tsutomu Okura
  • Publication number: 20140131549
    Abstract: Some implementations provide a semiconductor device that includes a first die and an optical receiver. The first die includes a back side layer having a thickness that is sufficiently thin to allow an optical signal to traverse through the back side layer. The optical receiver is configured to receive several optical signals through the back side layer of the first die. In some implementations, each optical signal originates from a corresponding optical emitter coupled to a second die. In some implementations, the back side layer is a die substrate. In some implementations, the optical signal traverses a substrate portion of the back side layer. The first die further includes an active layer. The optical receiver is part of the active layer. In some implementations, the semiconductor device includes a second die that includes an optical emitter. The second die coupled to the back side of the first die.
    Type: Application
    Filed: February 20, 2013
    Publication date: May 15, 2014
    Applicant: Qualcomm Incorporated
    Inventors: Kenneth Kaskoun, Shiqun Gu, Matthew M. Nowak
  • Publication number: 20140134769
    Abstract: Nanostructure array optoelectronic devices are disclosed. The optoelectronic device may have one or more intermediate electrical contacts that are physically and electrically connected to sidewalls of the array of nanostructures. The contacts may allow different photo-active regions of the optoelectronic device to be independently controlled. For example, one color light may be emitted or detected independently of another using the same group of one or more nanostructures. The optoelectronic device may be a pixilated device that may serve as an LED display or imaging sensor. The pixilated device may have an array of nanostructures with alternating rows and columns of sidewall electrical contacts at different layers. A pixel may be formed at the intersection of a row contact and a column contact. As one example, a single group of one or more nanostructures has a blue sub-pixel, a green sub-pixel, and a red sub-pixel.
    Type: Application
    Filed: January 16, 2014
    Publication date: May 15, 2014
    Applicant: Sundiode Inc.
    Inventors: James C. Kim, Sungsoo Yi, Danny E. Mars
  • Publication number: 20140125766
    Abstract: Embodiments related to accumulating charge during multiple exposure periods in a time-of-flight depth camera are disclosed. For example, one embodiment provides a method including accumulating a first charge on a photodetector during a first exposure period for a first light pulse, transferring the first charge to a charge storage mechanism, accumulating a second charge during a second exposure period for the first light pulse, and transferring the second charge to the charge storage mechanism. The method further includes accumulating an additional first charge during a first exposure period for a second light pulse, adding the additional first charge to the first charge to form an updated first charge, accumulating an additional second charge on the photodetector for a second exposure period for the second light pulse, and adding the additional second charge to the second charge to form an updated second charge.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Inventors: David Cohen, Shlomo Felzeshtein, Eli Larry
  • Publication number: 20140124652
    Abstract: A pixel circuit includes a single photon avalanche diode (SPAD) and a measurement circuit including a capacitance. The SPAD detects an incident photon and the measurement circuit discharges the capacitance at a known rate during a discharge time period. The length of the discharge time period is determined by the time of detection of the photon, such that the final amount of charge on the capacitance corresponds to the time of flight of the photon. The pixel circuit may be included in a time resolved imaging apparatus. A method of measuring the time of flight of a photon includes responding to an incident photon detection by discharging a capacitance at a known rate and correlating final capacitance charge to time of flight.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 8, 2014
    Applicants: The University Court of the University of Edinburgh, STMicroelectronics (Research & Development) Limited
    Inventors: Neale Dutton, Robert K. Henderson
  • Publication number: 20140124656
    Abstract: A light detecting method is provided. The light detecting method includes following steps. A light beam is sensed to generate a photocurrent. A predetermined current is subtracted from the photocurrent. The photocurrent is converted to a voltage.
    Type: Application
    Filed: January 9, 2014
    Publication date: May 8, 2014
    Applicant: Himax Display, Inc.
    Inventors: Wei-Ting Lan, Cheng-Chi Yen, Ju-Tien Cheng
  • Publication number: 20140117201
    Abstract: A sensor assembly is disclosed that includes a hollow casing having a radiation entrance opening. A radiation-transmissive optic is at the radiation entrance opening. A substrate is inside and sealed against the hollow casing. An optical sensing element is coupled to the substrate and configured to sense radiation that has passed through the radiation-transmissive optic. A method of manufacturing the sensor assembly also is disclosed.
    Type: Application
    Filed: October 26, 2012
    Publication date: May 1, 2014
    Inventor: Arthur John Barlow
  • Publication number: 20140117202
    Abstract: A driver circuit outputs a result of classifying and counting photons based on one or more energy levels to a column line. The driver circuit includes a multiplexer for receiving the result from a counter, a driving inverter for receiving a signal from the multiplexer and a power supply, and a switch connected between the power supply and an input terminal of the driving inverter.
    Type: Application
    Filed: May 15, 2013
    Publication date: May 1, 2014
    Inventors: Dae-kun YOON, Young KIM, Chae-hun LEE, Chang-jung KIM, Jae-chul PARK
  • Publication number: 20140110562
    Abstract: An optoelectronic device includes a packaged part and a core component. The core component includes a chip subcarrier and an optoelectronic chip. The device also includes a connecting plate that forms a coplanar waveguide transmission line together with the ground through a high-frequency transmission line and an isolation dielectric. The coplanar waveguide transmission line and a low-frequency line are connected to the packaged part and the core component and are configured to transmit a high-frequency signal and a low-frequency signal between the packaged part and the core component.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Xiaolu Song, Lixian Wang, Ninghua Zhu
  • Publication number: 20140103196
    Abstract: There is provided a light detector having a light-receiving unit including a light-receiving element of a photon-counting type that receives incident light and outputs a binary pulse indicating presence or absence of photon incidence, and an integrating unit that calculates an output value in which a total of pulse widths of pulses is integrated over a measurement period.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 17, 2014
    Inventors: Mineki SOGA, Cristiano NICLASS
  • Publication number: 20140104452
    Abstract: A sub pixel includes a photodetector and a column line output circuit. The photodetector is configured to output an electrical signal based on a detected amount of photons. The column line output circuit is configured to generate an output signal based on the electrical signal. The output signal is one of a current from a current source and a comparison signal indicative of binary output data.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 17, 2014
    Inventors: Tae Chan KIM, Min Ho KIM, Dong Ki MIN, Sang Chul SUL, Tae Seok OH, Kwang Hyun LEE, Tae Yon LEE, Jae Jin JUNG, Young Gu JIN
  • Publication number: 20140103189
    Abstract: Embodiments of the invention describe providing a compact solution to provide high dynamic range imaging (HDRI or simply HDR) for an imaging pixel by utilizing a control node for resetting a floating diffusion node to a reference voltage value and for selectively transferring an image charge from a photosensitive element to a readout node. Embodiments of the invention further describe control node to have to a plurality of different capacitance regions to selectively increase the overall capacitance of the floating diffusion node. This variable capacitance of the floating diffusion node increases the dynamic range of the imaging pixel, thereby providing HDR for the host imaging system, as well as increasing the signal-to-noise ratio (SNR) of the imaging system.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 17, 2014
    Inventors: Gang Chen, Duli Mao, Hsin-Chih Tai, Howard E. Rhodes
  • Publication number: 20140097357
    Abstract: A quantum-yield measurement device 1 comprises a dark box 5; a light generation unit, having a light exit part 7, for generating the pumping light L1; a light detection unit, having a light entrance part 11, for detecting light to be measured L2; an integrating sphere 14, having a light entrance opening 15 for the light L1 to enter and a light exit opening 16 for the light L2 to exit; and a movement mechanism 30 for moving the sphere 14 within the box 5 such that a container 3 attains each of a first state of being located inside of the sphere 14 and a second state of being located outside of the sphere 14 and, causing the opening 15 and opening 16 to oppose the part 7 and part 11, respectively, in the first state.
    Type: Application
    Filed: November 1, 2013
    Publication date: April 10, 2014
    Inventor: Kazuya IGUCHI
  • Publication number: 20140097359
    Abstract: The disclosed scanner allows detecting decay time characteristics of light emitted by a luminescent marking on an item which is transported, even at high speed, on a distribution/production line. The detection zone of the scanner's light sensor has a shape elongated along a path of the moving item, and the responsivity of the light sensor, within the wavelength range of the emitted luminescence light, is uniform over the detection zone. The control unit of the scanner is further operable to adapt the drive current, or drive voltage, powering its excitation light source to accordingly adapt the intensity of the excitation light delivered to the marking so that its light sensor can reliably measure the corresponding luminescence light response, and thus accurately determine a corresponding decay time value.
    Type: Application
    Filed: June 1, 2012
    Publication date: April 10, 2014
    Applicant: SICPA HOLDING SA
    Inventors: Milan Vasic, Nicola Duca
  • Patent number: 8691615
    Abstract: An image sensor and a method of manufacturing the same. The image sensor includes a plurality of photoelectric conversion units that are horizontally arranged and selectively emit electric signals by absorbing color beams.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: April 8, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kyu-sik Kim
  • Patent number: 8687099
    Abstract: Disclosed herein is an imaging device including: a pixel unit including a pixel disposed in a plane and a driving unit. The pixel includes an accumulating section configured to detect a physical quantity, and accumulate a charge corresponding to the physical quantity, a transfer section configured to transfer the charge from the accumulating section, a converting section configured to convert the charge into a voltage, an output section configured to output a signal of the voltage converted by the converting section, a reset section configured to reset the potential of the converting section, and a connecting section connected to the converting section. The driving unit is configured to transfer a signal for giving an instruction to transfer the charge, and a connecting signal for controlling connection and non-connection. The driving unit makes the charge transferred in a state of the converting sections being connected to each other.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: April 1, 2014
    Assignee: Sony Corporation
    Inventor: Keiji Mabuchi
  • Publication number: 20140084144
    Abstract: A method and system for optoelectronic receivers utilizing waveguide heterojunction phototransistors (HPTs) integrated in a CMOS SOI wafer are disclosed and may include receiving optical signals via a top surface of a photonically-enabled CMOS chip; and generating electrical signals in the chip utilizing one or more HPTs that detect optical signals. The HPTs may comprise a base and a split collector, with the split collector comprising a silicon-on-insulator (SOI) layer and a germanium layer. The thickness of the germanium layer may be such that carriers in the base do not interact with defects from an interface between the SOI layer and the germanium layer. The electrical signals may be amplified by amplifiers, the outputs of which may be utilized to bias the HPTs by a feedback network. An electrode formed longitudinally in the direction of light travel through the HPTs may bias the base of the HPTs.
    Type: Application
    Filed: November 26, 2013
    Publication date: March 27, 2014
    Inventors: Gianlorenzo Masini, Subal Sahni
  • Patent number: 8681135
    Abstract: A photo sensor capable of reducing the distortion of signals output from the photo sensor to output a correct measured value and an organic light emitting display using the same. The organic light emitting display includes a pixel unit formed on a transparent substrate to display an image in response to scan signals and data signals, a scan driver generating the scan signals to transmit the scan signals to the pixel unit, a data driver generating the data signals to transmit the data signals to the pixel unit, and a photo sensor including a sensing unit sensing brightness of ambient light to output a sensing signal and a control unit for receiving the sensing signal to output a brightness control signal for controlling brightness of the image.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: March 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon-Sung Ahn, Do-Youb Kim, Sun-A Yang, Dong-Wook Choi, Joo-Hyeon Jeong
  • Publication number: 20140070075
    Abstract: Embodiments of the invention provide a radiation detector comprising a pixel element, the pixel element comprising: a first diode element having a node capacitance associated therewith, the element being operable to pass electrical charge therethrough between terminals thereof in response to incident radiation; and an auxiliary charge storage reservoir, wherein the detector is operable by means of charge transfer between the auxiliary charge storage reservoir and a first terminal of the first diode element to reduce a rate at which an electrical potential VX of the first terminal changes in response to a cumulative amount of incident radiation.
    Type: Application
    Filed: February 13, 2012
    Publication date: March 13, 2014
    Applicant: SDI Limited
    Inventor: Thalis Anaxagoras
  • Publication number: 20140070100
    Abstract: A sensing device includes a first electrode, a second electrode with a first opening portion, a light blocking layer with a second opening portion, an organic EL layer including a light emitting unit and being formed between the first electrode and the second electrode, and a light receiving unit. The light blocking layer is positioned in the first electrode or between the first electrode and the second electrode, and in plan view from the subject side, the light blocking layer overlaps the first opening portion and the second opening portion is positioned within the first opening portion, and the light receiving unit is positioned further from the subject side than the second electrode, and in plan view from the subject side, the light receiving unit is positioned within the second opening portion.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 13, 2014
    Inventors: Eiji KANDA, Hideto ISHIGURO, Tsukasa EGUCHI, Tetsuji FUJITA, Hidetoshi YAMAMOTO