Controlling Light Source Intensity Patents (Class 250/205)
  • Patent number: 10692468
    Abstract: A luminescence shock avoidance algorithm selectively limits the brightness level of a display device when the display device is activated in a dark environment to prevent the temporary vision impairment that can occur when a display device is activated in a dark environment. The algorithm receives the state of the display (e.g. on or in standby mode), and can optionally receive an ambient lighting value from an ambient light sensor and a user-selectable manual brightness adjustment setting to determine whether luminescence shock avoidance should even be triggered, and if it is triggered, how much should the brightness level of the display be limited.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: June 23, 2020
    Assignee: Apple Inc.
    Inventor: Kai Achim Pantfoerder
  • Patent number: 10676215
    Abstract: A jet engine includes an external cowling, a member such as an oil reservoir, and a monitoring system for the member that is able to determine information relating to the member. The external cowling includes a visualization screen that is able to communicate with the monitoring system or directly with the member, so as to display the information specific to the member. When installed in the nacelle of the jet engine, this cowling becomes a smart cowling. The system also includes a method for inspecting a member of an aircraft jet engine and a corresponding computer program.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 9, 2020
    Assignee: SAFRAN AERO BOOSTERS SA
    Inventor: Nicolas Raimarckers
  • Patent number: 10677734
    Abstract: A method and an apparatus for optical measurement of a liquid sample placed in a sample well where the sample in the sample well is exposed to excitation light at first wavelength from an excitation light source, which excitation light generates a collection of singlet state oxygen molecules from donor molecules in the liquid sample, said singlet state oxygen molecules reacting with acceptor molecules in the liquid sample causing said acceptor molecules to emit chemiluminescence emission light at second wavelength, which second wavelength is shorter than said first wavelength, and where the emission light produced by the excitation light is measured with a detector, characterized in that the excitation light source is a LED.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: June 9, 2020
    Assignee: Thermo Fisher Scientific Oy
    Inventors: Jukka Tuunanen, Sauli Porttila, Matti Sairanen, Tuomo Von Lerber, Jorma Lampinen, Timo Karmeniemi
  • Patent number: 10670248
    Abstract: An embodiment of a system for providing illumination for an endoscope device includes a light source comprising laser bundles each having laser light emitters, an electromagnetic sensor embedded within the light source to sense electromagnetic energy emitted from at least one laser light emitter within each of the laser bundles, and a control circuit in electronic communication with the electromagnetic sensor and at least one laser light emitter. The light source sequentially pulses electromagnetic energy in a plurality of individual electromagnetic partitions. The electromagnetic sensor receives electromagnetic energy from at least one laser light emitter and measures an amount of electromagnetic energy generated by at least one laser light emitter.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: June 2, 2020
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Joshua D. Talbert, Donald M. Wichern, Laurent Blanquart
  • Patent number: 10670185
    Abstract: A first embodiment of the disclosure provides a system for detection of intrusion into a working space of a material testing device wherein visual user detection system uses digital image processing and filtering in order to identify user entry into the specimen test space. The visual user detection system has built-in redundancy for safety compliance and further can be used for data entry with respect to test data setup and configuration. A second embodiment of the disclosure uses a digital camera mounted on the frame of the material testing device, oriented toward a striped pattern on the top of the front base cover. The striped pattern is recognized by a vision algorithm which creates virtual boundary lines within the pattern. A detected intrusion, such as by a user body part, will be detected and the material testing machine put into a safe state.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: June 2, 2020
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Saad K. Namou, Brandon L. Smith, Charles J. Purwin, Christopher Bennet, Paolino Carnevale
  • Patent number: 10666321
    Abstract: A sampling gate comprising a first frequency input coupled to a first frequency path from a broadband photodiode. The sampling gate also includes a positive bias input coupled to a positive offset portion of a second frequency path from the broadband photodiode. The sampling gate also includes a negative bias input coupled to a negative offset portion of the second frequency path from the broadband photodiode. The sampling gate combines a first frequency signal from the first frequency path and a second frequency signal from the second frequency path to create a combined broadband frequency signal from the broadband photodiode.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: May 26, 2020
    Assignee: Tektronix, Inc.
    Inventor: Noah Brummer
  • Patent number: 10660185
    Abstract: A visible light sensor may be configured to sense environmental characteristics of a space using an image of the space. The visible light sensor may be controlled in one or more modes, including a daylight glare sensor mode, a daylighting sensor mode, a color sensor mode, and/or an occupancy/vacancy sensor mode. In the daylight glare sensor mode, the visible light sensor may be configured to decrease or eliminate glare within a space. In the daylighting sensor mode and the color sensor mode, the visible light sensor may be configured to provide a preferred amount of light and color temperature, respectively, within the space. In the occupancy/vacancy sensor mode, the visible light sensor may be configured to detect an occupancy/vacancy condition within the space and adjust one or more control devices according to the occupation or vacancy of the space. The visible light sensor may be configured to protect the privacy of users within the space via software, a removable module, and/or a special sensor.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: May 19, 2020
    Assignee: Lutron Technology Company LLC
    Inventors: Rhodes B. Baker, Craig Alan Casey, Galen Edgar Knode, Brent Protzman, Thomas M. Shearer, James P. Steiner
  • Patent number: 10657395
    Abstract: Advanced driver assistance systems can be designed to recognize and to classify traffic signs under real time constraints, and under a wide variety of visual conditions. This disclosure provides techniques that employ binary masks extracted by color space segmentation, with a different binary mask generated for each sign shape. Temporal tracking is employed to add robustness to the detection system. The system is generic, and is trainable to the traffic signs used in various countries.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: May 19, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Arun Shankar Kudana, Manu Mathew, Soyeb Nagori
  • Patent number: 10651942
    Abstract: One example includes a bias-based Mach-Zehnder modulation (MZM) system. The system includes a Mach-Zehnder modulator to receive and split an optical input signal and to provide an intensity-modulated optical output signal based on a high-frequency data signal to modulate a relative phase of the split optical input signal to transmit data and based on a bias voltage to modulate the relative phase of the split optical input signal to tune the Mach-Zehnder modulator. The system also includes a bias feedback controller to compare a detection voltage associated with the intensity-modulated output signal with a reference voltage to measure an extinction ratio associated with an optical power of the intensity-modulated optical output signal and to adjust the bias voltage based on the comparison to substantially maximize the extinction ratio.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: May 12, 2020
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Cheng Li, Jim Huang, Ashkan Seyedi, Marco Fiorentino, Raymond G. Beausoleil
  • Patent number: 10652975
    Abstract: A lamp system, and a method of operating the lamp system, are provided. The lamp system includes a gas discharge lamp, an electronic ballast and a control unit. A performance influencing control variable of the lamp system is used. The method allows operation with a high emission performance independent of the design thereof and of any potential changes caused by lamp aging and without any knowledge of the optimal operating temperature. According to the invention a light intensity control is provided, in which an actual value of a light intensity emitted by the gas discharge lamp is measured using a light sensor and the emitted light intensity is used as an actuating variable.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: May 12, 2020
    Assignee: Heraeus Noblelight GmbH
    Inventor: Jan Winderlich
  • Patent number: 10636820
    Abstract: Embodiments of the present disclosure provides a light sensor, including: a first thin film transistor, having a first terminal connected to a first node, a second terminal receiving a first level signal, and a control terminal receiving a first control signal; a second thin film transistor, having a first terminal connected to the first node, a second terminal receiving a second level signal, and a control terminal receiving a second control signal; a voltage follower, having an input terminal connected to the first node, and an output terminal; the third thin film transistor, having a first terminal connected to the output terminal of the voltage follower, a second terminal connected to an input terminal of an output unit, and a control terminal receiving a third control signal; and the output unit, having an input terminal connected to the second terminal of the third thin film transistor, and an output terminal connected to an output terminal of the light sensor.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: April 28, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueyou Cao, Haisheng Wang, Xiaoliang Ding, Chih-Jen Cheng, Yanling Han, Wei Liu, Pengpeng Wang, Ping Zhang
  • Patent number: 10627538
    Abstract: The present disclosure provides systems and methods for occupancy detection. In various embodiments, the occupancy detection system includes a server configured to wirelessly communicate with one or more occupancy detectors. Each occupancy detector includes or is associated with an object holder. The object holder can have one of two occupancy states: an occupied state in which an object occupies the object holder or an unoccupied state in which no object occupies the object holder. The occupancy detector includes a sensor and a controller configured to use sensor feedback to determine when the object holder changes occupancy states from the occupied state to the unoccupied state or from the unoccupied state to the occupied state. When the controller determines that the object holder changes occupancy states, the controller generates occupancy data that reflects this changed state and sends it to the server.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 21, 2020
    Inventor: Jason Hergott
  • Patent number: 10602914
    Abstract: A method for testing an optical investigation system, with an imaging device, a video camera and a light source for optical investigation of an object including a reference surface with predetermined optical properties being illuminated with illuminating light from a light source. An image of the reference surface is recorded by the imaging device and the video camera. An operating condition of the video camera that prevails during the recording of the image is recorded. The functionality or another property of the investigation system is determined on the basis of the recorded operating condition.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: March 31, 2020
    Assignee: Karl Storz SE & Co. KG
    Inventors: Gerd Beck, Andre Ehrhardt, Uwe Martin, Bernhard Gloeggler, Hilmar Schachenmayr, Bryan Kennedy, Raymond Coussa, Nathan Tang
  • Patent number: 10594972
    Abstract: A CMOS type semiconductor image sensor module wherein a pixel aperture ratio is improved, chip use efficiency is improved and furthermore, simultaneous shutter operation by all the pixels is made possible, and a method for manufacturing such semiconductor image sensor module are provided. The semiconductor image sensor module is provided by stacking a first semiconductor chip, which has an image sensor wherein a plurality of pixels composed of a photoelectric conversion element and a transistor are arranged, and a second semiconductor chip, which has an A/D converter array. Preferably, the semiconductor image sensor module is provided by stacking a third semiconductor chip having a memory element array. Furthermore, the semiconductor image sensor module is provided by stacking the first semiconductor chip having the image sensor and a fourth semiconductor chip having an analog nonvolatile memory array.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: March 17, 2020
    Assignee: Sony Corporation
    Inventors: Shin Iwabuchi, Makoto Motoyoshi
  • Patent number: 10573210
    Abstract: The present disclosure discloses a test circuit, an array substrate, and a light-emitting display apparatus. The test circuit is arranged at an output terminal of a scan driving circuit and is configured to test a current output characteristic of a pixel unit when the scan driving circuit does not provide a drive signal for the pixel unit. Test circuit includes an enable signal line, a scanning signal ON line, and a plurality of switch transistors. Each of the switch transistors includes a first terminal, a second terminal, and a third terminal, wherein the first terminal of each of the switch transistors connects the enable signal line, the second terminal connects the scanning signal ON line, and the third terminal connects the pixel unit.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: February 25, 2020
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Caiqin Chen
  • Patent number: 10564299
    Abstract: A SiPM tile includes SiPM arrays on a detector die, each of the SiPM arrays including a first plurality of microcells and a second plurality of reference microcells dispersed on the die, each reference microcell including an optically-opaque mask, a readout circuit each including a respective charge sensitive amplifier (CSA) connected to one of the reference microcells, each CSA configured to accumulate the dark current of the reference microcell during a selected time window, a hybrid temperature control circuit configured to receive an output signal from each CSA, and to determine the real-time temperature of the die based on the received output signal, to provide the real-time temperature to a temperature compensation and correction control unit that adjusts a cooling/heating system flow provided to the die, the adjustment based on the real-time temperature. A method for compensating the operating temperature variation of the SiPM tile is also disclosed.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: February 18, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Geng Fu, Jianjun Guo
  • Patent number: 10561060
    Abstract: A light source section configured to couple a plurality of laser beams having different wavelengths and emit measuring light; an illuminating section configured to illuminate a measurement target at a predetermined angle; a light receiving section configured to receive reflected measuring light from the measurement target; and a controlling section configured to compute a reflectance at each of the wavelengths, based on a light receiving result. The light source section includes: a first and a second light source configured to emit each laser beams having different wavelengths; and a dichroic mirror disposed in optical axes of the laser beams intersected, configured to combine the laser beams. The light receiving section includes: a first, a second and a third light receiving unit configured to receive the reflected measuring light from different distance. The controlling section is configured to select which of results from each light receiving unit to use.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: February 18, 2020
    Assignee: TOPCON CORPORATION
    Inventor: Taichi Yuasa
  • Patent number: 10558125
    Abstract: An exposure apparatus includes a stage on which a substrate is placed, a plurality of light irradiation units configured to emit light independently of each other to different positions in a right and left direction on a surface of the substrate, so as to form a strip-like irradiation area extending from one end of the surface of the substrate to the other end of the substrate, a stage moving mechanism configured to move the stage in a back and forth direction relative to the irradiation area, such that the whole surface of the substrate is exposed, and a light receiving unit configured move in the irradiation area between one end and the other end of the irradiation area in order to detect an illuminance distribution of the irradiation area in a longitudinal direction of the irradiation area.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: February 11, 2020
    Assignee: Tokyo Electron Limited
    Inventors: Teruhiko Moriya, Masaru Tomono, Ryo Shimada, Makoto Hayakawa, Seiji Nagahara
  • Patent number: 10546207
    Abstract: A method of thermographic nondestructive evaluation may include heating a portion of a surface of an object from a first surface temperature to a second surface temperature that is greater than the first surface temperature, collecting a plurality of thermal images of the portion of the surface of the object, detecting the sound zone of the portion of the surface of the object, determining a characteristic time corresponding to a time after the heating of the portion of the surface of the object wherein the sound zone of the surface of the object approaches a steady state temperature, normalizing temperature data of the plurality of thermal images with respect to the characteristic time and the steady state temperature, and detecting the defect zone based on differences between normalized temperature data of pixels of the defect zone and normalized temperature data of pixels of the sound.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: January 28, 2020
    Assignee: North Carolina Agricultural and Technical State University
    Inventors: Mannur J. Sundaresan, Letchuman Sripragash
  • Patent number: 10539663
    Abstract: Introduced here are techniques for implementing a comparator-based LIDAR system with improved components, such as an improved high-speed comparator circuit, to acquire depth information from the surroundings of an unmanned moving object (e.g., a UAV). In various embodiments, the LIDAR system includes an amplifier module with different configurations of anti-saturation circuitry. The LIDAR system may further include various feedback control mechanisms for noise interference reduction and timing measurement compensation including, for example, dynamic gain adjustment of the photodetector module, and/or dynamic adjustment of comparators' thresholds. Among other components, the disclosed comparator circuit can provide the LIDAR system with a wide dynamic range, preventing large signal amplification saturation while also providing sufficient magnification of small signals.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: January 21, 2020
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Xiang Liu, Zhipeng Zhan, Wenjin Pu, Xiaoping Hong
  • Patent number: 10541109
    Abstract: Disclosed are methods for sensing conditions of an electron microscope system and/or a specimen analyzed thereby. Also disclosed are sensor systems and electron microscope systems able to sense system conditions, and/or conditions of the specimen being analyzed by such systems. In one embodiment, a sparse dataset can be acquired from a random sub-sampling of the specimen by an electron beam probe of the electron microscope system. Instrument parameters, specimen characteristics, or both can be estimated from the sparse dataset.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: January 21, 2020
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Bryan A. Stanfill, Sarah M. Reehl, Margaret C. Johnson, Lisa M. Bramer, Nigel D. Browning, Andrew J. Stevens, Libor Kovarik
  • Patent number: 10541697
    Abstract: For producing a low-power, low-phase noise oscillating signal using a self-injection locking oscillator, examples include: producing, using an oscillator, a signal having a base frequency component and an Nth harmonic component, in which N is a selected integer and N>1; filtering the signal through a bandpass filter with Q factor ?5, the filter configured to pass the Nth harmonic component as a filtered Nth harmonic component; and injecting the filtered Nth harmonic component into the oscillator to self-injection lock the base frequency of the signal.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: January 21, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bichoy Bahr, Baher Haroun, Ali Kiaei
  • Patent number: 10523225
    Abstract: For producing a low-power, low-phase noise oscillating signal using a self-injection locking oscillator, examples include: producing, using an oscillator, a signal having a base frequency component, an Mth harmonic component and a Pth harmonic component, in which M and P are selected integers and M>P>1; filtering the signal through one or more bandpass filters including at least two resonators, the filters having Q factor ?5, the filters configured to pass the Mth and Pth harmonic components; multiplying the filtered Mth and Pth harmonic components together to produce a multiplied signal, and filtering the multiplied signal using a low pass filter to pass a difference between the filtered Mth and Pth harmonic components, the difference including a filtered beat frequency waveform; and injecting the filtered beat frequency waveform into the oscillator to injection lock the signal to the filtered beat frequency waveform.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: December 31, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Bichoy Bahr, Baher Haroun, Ali Kiaei
  • Patent number: 10510141
    Abstract: The present disclosure relates to a method and apparatus for determining an illumination intensity for inspection, and an method and apparatus optical inspection. The method for determining an illumination intensity for inspection comprises: acquiring images of a sample to be inspected taken by each of at least one imaging element at a plurality of illumination intensities; calculating, for each imaging element, a gray standard deviation of each of the images acquired at the plurality of illumination intensities; and determining the illumination intensity of each imaging element for inspection according to the gray standard deviation. The inspection accuracy may be improved by using the illumination intensity determined by the method provided in the present disclosure to inspect an object to be inspected.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: December 17, 2019
    Assignees: BOE Technology Group Co., Ltd., Chongqing BOE Optoelectronics Technology Co., Ltd.
    Inventors: Xu Wang, Chaoqiang Liu, Zhengdong Xi, Yang Liu
  • Patent number: 10502834
    Abstract: A method for detecting the form of sails and the like wherein in the form detection is brought about by means of a three-dimensional measurement of a plurality of locations of the surface of the sail, which measurement is carried out by means of measurement of the time-of-flight of an optical signal.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: December 10, 2019
    Assignee: POLITECNICO DI MILANO
    Inventors: Fabio Fossati, Remo Sala, Ambra Vandone, Giacomo Mainetti
  • Patent number: 10502391
    Abstract: The present invention relates to a light collector adapted to collect light from a plurality of light sources and where the light collector comprises a plurality of lenslets collecting light from the light sources and convert the light into a plurality of light beams propagating along an optical axis. The lenslets are arranged in a dense pattern, where at least 12 outermost adjacent lenslets is located along an outer circular boundary having the same radial distance to a center of the light collector. The dense pattern has been obtained by optimizing a packaging density defined by a ratio of a sum of areas of circular cross sections of the lenslets and an area of the outer circular boundary and that the packaging density is at least 0.79.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: December 10, 2019
    Assignee: HARMAN PROFESSIONAL DENMARK APS
    Inventor: Dennis Joergensen
  • Patent number: 10497391
    Abstract: Aspects of the present disclosure relate to rewinding a tape medium. Data is written to the tape medium under a first tension. An end data region of the tape medium is identified, where the end data region is not the end of the tape medium. An indication that the tape medium is to be unmounted is received. The position of the tape medium is moved to the end data region. The tape medium is then rewound from the end data region under a second tension, the second tension being lower than the first tension.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: December 3, 2019
    Assignee: International Business Machines Corporation
    Inventors: Tsuyoshi Miyamura, Setsuko Masuda, Eiji Ogura
  • Patent number: 10491052
    Abstract: A rotatable LIDAR device including contactless electrical couplings is disclosed. An example rotatable LIDAR device includes a vehicle electrical coupling including (i) a first conductive ring, (ii) a second conductive ring, and (iii) a first coil. The example rotatable LIDAR device further includes a LIDAR electrical coupling including (i) a third conductive ring, (ii) a fourth conductive ring, and (iii) a second coil. The example rotatable LIDAR device still further includes a rotatable LIDAR electrically coupled to the LIDAR electrical coupling. The first conductive ring and the third conductive ring form a first capacitor configured to transmit communications to the rotatable LIDAR, the second conductive ring and the fourth conductive ring form a second capacitor configured to transmit communications from the rotatable LIDAR, and the first coil and the second coil form a transformer configured to provide power to the rotatable LIDAR.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 26, 2019
    Assignee: Waymo LLC
    Inventors: Samuel William Lenius, Pierre-yves Droz
  • Patent number: 10475636
    Abstract: An embodiment of a system includes an RF signal source, a first electrode, a second electrode, and a cavity configured to receive an electrodeless bulb. The RF signal source is configured to generate an RF signal. The first electrode is configured to receive the RF signal and to convert the RF signal into electromagnetic energy that is radiated by the first electrode. The cavity is defined by first and second boundaries that are separated by a distance that is less than the wavelength of the RF signal so that the cavity is sub-resonant. The first electrode is physically positioned at the first boundary, and the second electrode is physically positioned at the second boundary. The first electrode, the second electrode, and the cavity form a structure that is configured to capacitively couple the electromagnetic energy into the electrodeless bulb when the electrodeless bulb is positioned within the cavity.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: November 12, 2019
    Assignee: NXP USA, Inc.
    Inventors: Steven Do, Lionel Mongin, Pierre Marie Jean Piel
  • Patent number: 10469813
    Abstract: A light projection system includes a light module emitting a light beam and a movable mirror reflecting the light beam toward a surface. A graphics processing unit processes video data to compensate for a response of the light module. The response is an optical power of the light beam produced by the light module for a given forward current through the light module. A light source driver controls the light module as a function of the processed video data. Colors of the images from the video data produced on the surface by the light beam would otherwise not look as they are intended to look due to changing of the response of the light module, but the processing of the video data alters the video data such that the colors of the images from the video data produced on the surface look as they are intended to look.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: November 5, 2019
    Assignees: STMicroelectronics S.r.l., STMicroelectronics Ltd
    Inventors: Massimo Ratti, Naomi Petrushevsky, Eli Yaser, Yotam Nachimias
  • Patent number: 10466078
    Abstract: An encoder includes a scale having graduations arranged in a measurement direction, a head including a light receiving unit configured to receive, via the scale, light emitted from a light source, and being configured to detect a relative movement amount with respect to the scale by relatively moving in the measurement direction of the scale, and a control unit configured to control the head. The control unit includes a light amount control unit configured to perform control so as to keep a predetermined light receiving amount by increasing or decreasing a light amount of the light source, an error determination unit configured to determine an error based on light received by the light receiving unit, and a light amount suppression unit configured to suppress a light amount of the light source by stopping control performed by the light amount control unit, when the error determination unit determines as an error.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: November 5, 2019
    Assignee: MITUTOYO CORPORATION
    Inventor: Yoshiaki Kato
  • Patent number: 10466096
    Abstract: A sensing method is based on using a special fiberoptic probe for detection of acoustic/ultrasound pressure in an immersion medium. The developed system is highly sensitive in detecting ultrasound waves up to 100 MHz, for imaging of micro structures and more. For applications up to 100 MHz, without spatial averaging corrections, the probe tip is modified by reducing the fiber diameter to 7 um or less. Also, to maximize acousto-optic interaction, the probe tip, not just its end face, may be coated with a thin layer of metallic material. This thin film coating satisfies partial transparency of the metallic coating. The coating thickness may range from 2 nm to 10 nm or others depending on the type of the coating material. The probe detects the pressure of acoustic and/or ultrasound waves propagating within an immersion medium, whenever the probe tip is immersed inside the medium, and having a reasonable immersion contact surface.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: November 5, 2019
    Assignee: Drexel University
    Inventors: Mahmoud A. El-Sherif, Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram
  • Patent number: 10464412
    Abstract: Methods and systems are provided for determining a position of active grille shutters (AGS) using a light sensor positioned behind the AGS. In one example, a method may include diagnosing a position of the AGS in response to an output of a light sensor positioned behind the active grille shutters (AGS), and responsive to the diagnosed position, adjusting an engine operating parameter. Further, the AGS diagnostic may be performed in response to an indication of ambient light external to a vehicle being over a threshold level.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: November 5, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Aed M. Dudar
  • Patent number: 10466516
    Abstract: A laser system may include a laser source configured to generate a laser light beam, a beam stabilizer downstream from the laser light source, and an acousto-optic modulator (AOM). The AOM may include an acousto-optic medium configured to receive the laser light beam, and a phased array transducer including a plurality of electrodes coupled to the acousto-optic medium and configured to cause the acousto-optic medium to output a zero order laser light beam and a first order diffracted laser light beam. The system may further include a photodetector configured to receive a sampled laser light beam split from the zero order beam and generate a feedback signal associated therewith, and an RF driver configured to generate an RF drive signal to the phased array transducer electrodes so that noise is diverted to the first order diffracted laser light beam based upon the feedback signal.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: November 5, 2019
    Assignee: HARRIS CORPORATION
    Inventors: Randall K. Morse, Peter A. Wasilousky, Lee M. Burberry, Michael R. Lange, Catheryn D. Logan, Christopher A. Corey
  • Patent number: 10451714
    Abstract: Multiple camera systems which use laser illumination for ranging benefit from a heartbeat to synchronize the timing of the individual lasers to eliminate collisions of multiple simultaneous laser emissions. An optical micromesh system provides for the dynamic entry and egress of mobile and stationary nodes. The optical communication between nodes may be controlled using time domain multiplexing (TDM) to avoid cross talk and communication collision due to overlapping laser illumination. By using an optical, laser based micromesh network, laser ranging can be used to dynamically map node location.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: October 22, 2019
    Assignees: Sony Corporation, Sony Interactive Entertainment Inc.
    Inventors: Peter Shintani, Jose Omar Gonzalez Hernandez, William Clay, Pablo Antonio Espinosa, Fred Ansfield, Bibhudendu Mohapatra, Keith Resch, Morio Usami
  • Patent number: 10445865
    Abstract: A method and apparatus for converting a standard dynamic range (SDR) video to a high dynamic range (HDR) video. The conversion is adaptive and takes both spatial and temporal information of a current frame and previous frames into consideration such that the majority of pixels falls into the most sensitive regions of human eyes in the target dynamic range, while at the same time, the continuity of luminance is maintained in temporal domain to prevent flickering.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: October 15, 2019
    Assignee: TFI DIGITAL MEDIA LIMITED
    Inventors: Hon Wah Wong, Hon Tung Luk, Chi Keung Fong, Yin Sze, Hok Kwan Cheung, Yiu Fai Yuen
  • Patent number: 10447009
    Abstract: A method of determining initial parameters and target values for tuning an emission wavelength of a wavelength tunable laser capable of emitting laser light in a substantial wavelength range is disclosed. The method iterates an evaluation of initial parameters and target values at target wavelengths in a preset order. The evaluation includes steps of supplying empirically obtained parameters to the t-LD, confirming whether the t-LD generates an optical beams, determining the initial parameters and the target values by carrying out feedback loops of the AFC and the APC when the t-LD generates the optical beam, or shifting the wavelength range so as to exclude the current target wavelength when the t-LD generates no optical beam.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: October 15, 2019
    Assignee: Sumitomo Electric Device Innovations, Inc.
    Inventor: Hirokazu Tanaka
  • Patent number: 10438459
    Abstract: A photoelectric sensor includes a connecting section for light projection to which a light propagation member for light projection optically coupled to a light emitting element is connected, a connecting section for light reception to which a light propagation member for light reception optically coupled to the light receiving element is connected, a signal generating unit configured to compare a light reception signal generated by the light receiving element and a threshold and generate a detection signal indicating a result of the comparison, a first light emitting element for indication optically coupled to the connecting section for light reception, and a mounting substrate on which each of the first light emitting element for indication and the light receiving element is positioned in the connecting section for light reception or one of the first light emitting element for indication and the light receiving element is positioned via the other.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: October 8, 2019
    Assignee: KEYENCE CORPORATION
    Inventor: Shinichiro Otsu
  • Patent number: 10436761
    Abstract: Systems and methods for detecting gas using a wide band light source, and at least two narrow band light sensors, wherein each sensor may be operable to detect light at a different range of wavelengths. Additionally, the gas detector device may comprise a color changing indicator operable to react with gas in the air to change color, wherein different gases may react to create different colors, and wherein the sensors detect light reflected by the color changing indicator from the wide band light source. The gas detector device may comprise a processor in communication with the at least two light sensors operable to receive detected reflected wavelength information from the light sensors, and determine the type of gas that reacted with the color changing indicator based on the color detected by the sensors, wherein each color may be associated with a different type of gas.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: October 8, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Peng Jin, Takashi Yamaguchi
  • Patent number: 10429554
    Abstract: A half mirror, a method for manufacturing the half mirror and a lighting unit using the half mirror can include a base material and a half mirror layer formed on the base material. The half mirror layer can include a chrome oxide layer, which is made by only a sputtering method, and can be configured to perform a high thermal resistance. Accordingly, the half mirror cannot crack even under various circumstances such that repeat low/high temperatures. Thus, the disclosed subject matter can provide half mirrors having a high durability such as a thermal resistance and methods for manufacturing such the half mirrors in simple manufacturing processes, and also can provide lighting units using the half mirror having a high durability, which can maintain a stable reflectivity for a long term and which can also maintain a good appearance for a long-term use because the half mirror can prevent cracking therein.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 1, 2019
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventors: Yoshio Suzuki, Kazushige Kuroki
  • Patent number: 10420196
    Abstract: A lighting circuit for a light source includes a drive circuit that supplies a lamp current to the light source, detects the lamp current, and executes feedback control such that the lamp current approaches a target current, and an overcurrent protection circuit that is inserted between the drive circuit and the light source and that restricts the lamp current flowing into the light source so that the lamp current does not exceed an overcurrent threshold value. The overcurrent protection circuit includes a transistor, an inductor, a rectifier, a current sensor that generates a current detection signal according to the lamp current, and an overcurrent protection controller that controls ON/OFF of the transistor based on the current detection signal and the overcurrent threshold value. The transistor, the inductor and the rectifier are disposed in a T-shape.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: September 17, 2019
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Tomoyuki Ichikawa
  • Patent number: 10408938
    Abstract: A fast scan detection method is provided. The fast scan detection method is applied to a rotatable scan detection device where two or more detection samplings are performed for calculating each scan detection distance value, where each of the detection samplings includes: emitting, by an emission light source, infrared detection light, where the infrared detection light propagates through a surrounding space and is reflected by a detected object when the infrared detection light encounters the detected object; and receiving, by a photoelectric sensor in a reception unit, the infrared detection light reflected by the detected object, where the rotatable scan detection device performs one detection sampling at each detection angular position at which the rotatable scan detection device is positioned.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: September 10, 2019
    Assignee: BENEWAKE (BEIJING) TECH. CO, LTD.
    Inventors: Kai Zheng, Rui Wang, Yuan Li
  • Patent number: 10401956
    Abstract: An eye-tracking system comprises one or more optical sources configured to emit infrared light with a narrow spectral linewidth toward an eye of a user and one or more shuttered optical sensors configured to receive infrared light reflected off the eye of the user. A controller is configured to pulse the one or more optical sources on and off, such that a pulse-on duration is less than a duration needed to fully thermalize each optical source. The controller is also configured to open the shuttered optical sensor for a detection duration based on the pulse-on duration. A conformation of the user's eye may be indicated based on infrared light received at the shuttered optical sensor during the detection duration.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: September 3, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Raymond Kirk Price, Michael Bleyer, Denis Demandolx
  • Patent number: 10404371
    Abstract: An architecture for an optoelectronic oscillator uses Stimulated Brillouin Scattering (SBS) to seed, filter and amplify the oscillation signal in an overlapped oscillator loop for both a RF modulated optical sideband and a SBS signal. By phase matching the RF modulated optical sideband generated by SBS with the SBS signal, the feedback will collapse the bandwidth of the SBS signal and in turn the bandwidth of the Brillouin frequency signal, which also serves as a filter to filter out multiple undesired OEO loop modes. The embodiments herein result in reduced phase noise and increased stability.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: September 3, 2019
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Weimin Zhou
  • Patent number: 10397456
    Abstract: An apparatus for inspecting an edge portion of a substrate can inspect a defect or a chamfered width on an edge portion of a substrate. First and second right-angled prisms are disposed above and below the edge portion such that inclined surfaces thereof are directed toward the upper surface and lower surface of the edge portion. A lighting part irradiates the edge portion of the substrate with light. A photographing part is disposed adjacent to the edge portion. The photographing part takes an image of the upper surface of the edge portion from light that has passed through the first right-angled prism, an image of the lower surface of the edge portion from light that has passed through the second right-angled prism, and an image of an end surface of the edge portion.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: August 27, 2019
    Assignee: Corning Precision Materials Co., Ltd.
    Inventor: Siho Seong
  • Patent number: 10396831
    Abstract: An apparatus and method are provided for converting broad spectrum electromagnetic energy to useful, narrow bands of electromagnetic energy. The broad spectrum electromagnetic energy may be from the Sun or from combustion, and output from the apparatus may be bands of visible light, infrared, microwaves, or a combination thereof. The apparatus can function as part of a highly efficient plant growing system or may function as part of a heating or warming system.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: August 27, 2019
    Inventor: James F. Brown
  • Patent number: 10373882
    Abstract: The measurement method may include obtaining first measurement data from a recess region formed in a semiconductor substrate, obtaining second measurement data from a conductive pattern filling a portion of the recess region, calculating a first volume of the recess region from the first measurement data, calculating a second volume of the conductive pattern from the second measurement data, and calculating a measurement target parameter using a difference between the first and second volumes.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: August 6, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Choonshik Leem, Jihye Lee, Deokyong Kim, Soobok Chin
  • Patent number: 10359682
    Abstract: A variable transmittance window system is provided and includes at least one variable transmittance window. At least one energy harvesting device generates electrical power. A power supply circuitry maximizes the electrical power. At least one energy storage device is charged by the electrical power. A slave control circuitry controls a transmittance state of the at least one variable transmittance window, the slave control circuitry being powered by at least one of the power supply circuitry and the at least one energy storage device. A master control circuitry monitors the slave control circuitry, wherein the master control circuitry is operable to issue a wireless override signal to the slave control circuitry such that the slave control circuitry changes the transmittance state of the at least one variable transmittance window to an override transmittance state.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: July 23, 2019
    Assignee: GENTEX CORPORATION
    Inventors: Robert R. Turnbull, David I. Driscoll, Bradley L. Busscher, Kevin L. Ash, Christian M. Kemperman
  • Patent number: 10334695
    Abstract: A daylight harvesting system includes a daylight harvester device that distinguishes the natural and artificial contributions to the light in a workspace. Distinguishing the contributions allows the values of the contributions to be combined in ways other than linearly summing them to obtain the total light. For example, when the natural light increases, the artificial light may be reduced by less than the natural-light increase to mitigate glare and/or shadows and other artifacts that might otherwise be present and objectionable. The daylight harvesting system can include a human-based sensor located in a workspace, e.g., on or close to a user, so the measurements it takes are not adversely affected by spatial variations across a room in the natural and artificial lighting.
    Type: Grant
    Filed: March 26, 2017
    Date of Patent: June 25, 2019
    Assignee: ERIK PAGE & ASSOCIATES, INC.
    Inventor: Erik Russell Page
  • Patent number: 10327302
    Abstract: A lighting system controller comprises a controller for controlling an arrangement of lighting units for implementing different lighting effects. A sensor is used to identify a visitor and also to count the number of visits of the visitor which have taken place, for example while the same lighting effect has been in place. A change in the lighting effect is made based on the number of visits of one or more visitors, again for example with the same lighting effect. In this way, the lighting effect is changed automatically when it needs to be changed in order to maintain the interest of visitors (either individually or as a collective group).
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: June 18, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Johannes Petrus Wilhelmus Baaijens, Willem Piet Van Hoof, Edith Danielle Den Hartog