Controlling Light Source Intensity Patents (Class 250/205)
  • Patent number: 11002890
    Abstract: An optical element includes a Fresnel surface including valleys between Fresnel segments. Compensation trenches disposed in the valleys are configured to accept excess of an optical layer received in the valleys during a deposition of the optical layer. The compensation trenches are filled with the optical layer.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 11, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Evan M. Richards, Kurt Allen Jenkins
  • Patent number: 11002605
    Abstract: An ambient light color sensor adapted to determine color of ambient light and method for calibrating thereof. The ambient light color sensor comprises a sensor body having at least one diffuser and a light color sensing module disposed below the at least one diffuser. The light color sensing module comprises a plurality of channels adapted to detect light collected by the at least one diffuser at different wavelengths to produce sensor readings.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: May 11, 2021
    Assignee: Crestron Electronics, Inc.
    Inventor: Dennis Hromin
  • Patent number: 10989795
    Abstract: A system and method for analyzing a surface of an object is provided. The system includes a 3D measurement device operable to acquire a plurality of points on the surface of the object and determine 3D coordinates for each of the points. The system further includes processors operably coupled to the 3D measurement device. The processors are responsive to computer instructions when executed on the processors for performing a method comprising: generating a point cloud from the 3D coordinates of the plurality of points; extracting a first set of points from the plurality of points; defining a first reference geometry through the first set of points; measuring at least one first metric from each of the points in the first set of points to the first reference geometry; and identifying a nonconforming feature based at least in part on the at least one first metric.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: April 27, 2021
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Oliver Zweigle, Aleksej Frank, Johannes Buback
  • Patent number: 10983612
    Abstract: The disclosure discloses a stylus and a human-machine interactive apparatus. The stylus includes: a body, including a refill, a housing and a clamping piece; wherein the refill can perform a lever deflection motion by taking the clamping piece as a pivot when it is under a pressure; a light emitter, fixed at an end portion of the refill and has a light emitting surface facing away from the refill; a light signal sensing element on a side of the end portion of the refill and configured to sense a light beam emitted by the light emitter and to output coordinate information of a position irradiated by the light beam; and a micro control unit configured to generate a corresponding drive signal according to the coordinate information output by the light signal sensing element and to send the drive signal to a touch screen via the refill.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 20, 2021
    Assignees: Hefei BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Chunhua Li, Guanglei Yang, Meng Wang, Zhixiang Fang, Xuxu Hu
  • Patent number: 10978107
    Abstract: An apparatus comprises a photodetector (PD) that irradiates a disk with laser light and outputs a signal based on a reflected light from the disk, a front monitor that outputs a reference signal based on an emitted light of a laser diode, and a data detection processing unit to which an output signal of the PD is input to generate a reproduction signal. The data detection processing unit includes a reproduction signal adaptive equalizer that outputs an equalization signal by adaptive equalization processing based on the PD output signal, and a laser noise adaptive equalizer that outputs the equalization signal by the adaptive equalization processing based on a laser noise signal, and generates the reproduction signal in which the laser noise is reduced on the basis of an arithmetic operation result of the output of the reproduction signal adaptive equalizer and the output of the laser noise adaptive equalizer.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: April 13, 2021
    Assignee: Sony Corporation
    Inventors: Nobuyoshi Kobayashi, Junya Shiraishi
  • Patent number: 10969651
    Abstract: A multi-channel light detection and ranging system includes a plurality of active channels, each comprising a photosensitive element arranged to be exposed to light and an analog front end circuit arranged for receiving a signal from the photosensitive element. A compensation channel comprises a compensation element and an analog front end circuit arranged for receiving signals from the compensation capacitor. A processing unit arranged for receiving signals from the active channels and the compensation channel, deriving at a compensation signal from the signal received from the compensation channel, and compensating for the crosstalk interference and/or the interference common to the analog front end circuits of the active channels, using the compensation signal.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: April 6, 2021
    Assignee: MELEXIS TECHNOLOGIES NV
    Inventors: Volodymyr Seliuchenko, Marcelo Mizuki
  • Patent number: 10959299
    Abstract: A lighting fixture includes a light source that emits an illumination light and a receiver configured to receive a lighting control message from a photo sensor device. The lighting fixture further includes a lighting controller configured to adjust the illumination light based on the lighting control message. Adjusting the illumination light by the lighting controller includes changing a Correlated Color Temperature (CCT) of the illumination light.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: March 23, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Raymond George Janik, Russell Scott Trask
  • Patent number: 10946483
    Abstract: A laser apparatus may include a spectrum controller and a spectrum modulator. The spectrum controller may control a center wavelength and/or a bandwidth of a spectrum of a laser beam. The spectrum modulator may modulate the spectrum of the laser beam having the center wavelength and/or the bandwidth controlled by the spectrum controller. Thus, the laser beam may have the spectrum optimal for a semiconductor fabrication process. Particularly, the substrate may be accurately diced using the laser beam having the optimal spectrum.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: March 16, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-Chul Kwon, Man-Hee Han
  • Patent number: 10915765
    Abstract: A vehicle-assistance system for classifying objects in a vehicle's surroundings is provided. The system may include at least one memory configured to store classification information for classifying a plurality of objects and at least one processor configured to receive, on a pixel-by-pixel basis, a plurality of measurements associated with LIDAR detection results. The measurements may include at least one of: a presence indication, a surface angle, object surface physical composition, and a reflectivity level. The at least one processor may also be configured to receive, on the pixel-by-pixel basis, at least one confidence level associated with each received measurement, and access the classification information. The at least one processor may further be configured to, based on the classification information and the received measurements with the at least one associated confidence level plurality, identify a of pixels as being associated with a particular object.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: February 9, 2021
    Assignee: INNOVIZ TECHNOLOGIES LTD.
    Inventors: Amir Day, Guy Zohar, Julian Vlaiko, Nir Osiroff, Ovadya Menadeva
  • Patent number: 10914627
    Abstract: A photodiode current comparison circuit has a first current source coupled to a circuit node configurable to operate in a first mode, a second current source coupled to the circuit node configurable to operate in a second mode opposite the first mode, and a third current source switchable to route a current to the circuit node in response to a data signal using a transistor coupled between the circuit node and the third current source. A photodiode is coupled to the circuit node. In a first configuration, an anode of the photodiode is coupled to the circuit node and a cathode of the photodiode is coupled to a power supply terminal. In a second configuration, a cathode of the photodiode is coupled to the circuit node and an anode of the photodiode is coupled to a power supply terminal. An amplifier provides an error signal of the photodiode.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: February 9, 2021
    Assignee: Semtech Corporation
    Inventors: Jonah Edward Nuttgens, James Stephen Mason
  • Patent number: 10877167
    Abstract: Provided is a radiation monitor, including: a radiation detection unit which includes a radiation detection element, the radiation detection element emitting light of a predetermined light emission wavelength; a light emission unit which emits light of a wavelength different from the light emission wavelength; a wavelength selection unit which passes the light of the light emission wavelength, and is set to a first mode to block the light from the light emission unit; an optical transmission line which transmits the light; a light detection unit which converts the light passing through the wavelength selection unit into an electric pulse; and a control unit which measures a count rate of the electric pulse, and determines whether at least the light emission unit is degraded on the basis of the count rate and a light intensity of the light emission unit.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 29, 2020
    Assignee: HITACHI, LTD.
    Inventors: Takahiro Tadokoro, Katsunori Ueno, Yuichiro Ueno, Kouichi Okada, Shuichi Hatakeyama, Yasushi Nagumo, Yoshinobu Sakakibara, Toru Shibutani, Takahiro Itou
  • Patent number: 10847340
    Abstract: Systems for directing a pulsed beam of charged particles include an ion source configured to produce a pulsed ion beam that includes at least one ion bunch. Such systems include an electromagnet for producing an electromagnetic field through which the pulsed ion beam travels, and an automated switch that selectively activates the electromagnet. A source of radiation triggers the automated switch, and at least one processor is configured to activate the electromagnet as the ion bunch traverses the electromagnetic field. Such systems may be useful, for example, for filtering a pulsed ion beam to select ions falling within a desired energy range and/or for providing pulsed ion radiation at desired times.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: November 24, 2020
    Assignee: HIL APPLIED MEDICAL, LTD.
    Inventors: Evgeny Papeer, Assaf Shaham, Shmuel Eisenmann, Yair Ferber, Ynon Hefets, Omer Shavit, Boaz Weinfeld, Sagi Brink-Danan
  • Patent number: 10823635
    Abstract: Optical apparatus includes a diffractive optical element (DOE), which includes multiple optical surfaces, including at least an entrance surface and an exit surface, and a side surface, which is not parallel to the optical surfaces of the DOE. A grating is formed on at least one of the optical surfaces so as to receive radiation entering the DOE via the entrance surface and to diffract the radiation into a predefined pattern comprising multiple diffraction orders that exit the DOE via the exit surface. An optical detector is positioned in proximity to the side surface so as to receive and sense an intensity of a high order of the radiation diffracted from the grating that passes through the side surface of the DOE.
    Type: Grant
    Filed: July 15, 2018
    Date of Patent: November 3, 2020
    Assignee: APPLE INC.
    Inventors: Alon Yasovsky, Benny Pesach
  • Patent number: 10823962
    Abstract: A processing device as a personal digital assistant includes a display unit configured to display an image, a connection detector configured to detect that an external display device has been connected, an image output unit configured to output an image displayed on the display unit to the display device in response to the connection of the display device, and a user interface output unit configured to switch an image displayed on the display unit to display of a user interface for instructing execution of processing related to the image output to the display device at a predetermined brightness value in response to the connection of the display device.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 3, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Fusashi Kimura
  • Patent number: 10797701
    Abstract: Techniques to compensate non-radiation hardened components for changes or degradation in performance that result from exposure to radiation. During testing and modeling phase, a component's performance may be characterized as a result of the exposure to radiation. In some examples, some performance characteristics, such as voltage response, frequency response, gain, leakage or other characteristics, may change as the component's exposure to an amount of radiation increases. During normal operation, a system may include one or more devices that measure the amount of radiation to which the system may be subjected, such as a radiation dosimeter. The system may compensate the non-radiation hardened component based on the amount of radiation received the known component performance change caused by radiation as determined during the modeling phase.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: October 6, 2020
    Assignee: Honeywell International Inc.
    Inventors: Zygmunt Zubkow, Richard Wessels, John Lintz
  • Patent number: 10775007
    Abstract: A split type downlight apparatus includes a lamp cap, a driving component, a light body assembly, a spring and an electrical connector. The light body assembly includes a light shell and a light assembly fixed in the light shell. One end of the electrical connector electrically connects to the driving component. The other end of the electrical connector electrically connects to the light assembly. Two ends of the spring are hooked in the bottom of the driving housing and the top of the light shell respectively. The driving housing connects to the light shell through the spring. The driving board and the light assembly are separated.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: September 15, 2020
    Assignee: LEEDARSON LIGHTING CO. LTD.
    Inventors: Liangliang Cao, Xiaojuan Huang
  • Patent number: 10761470
    Abstract: A printing apparatus is provided. The apparatus comprises a light-emitting element, a light-receiving element including a first terminal and a second terminal, a reference current generator supplying a reference current, a comparator comparing a monitor current with the reference current, the light-receiving element supplying the monitor current to the second terminal in accordance with a light emission amount, a driver driving the light-emitting element based on an output of the comparator, and a reference voltage controller. The comparator includes a first input terminal connected to the second terminal and a second input terminal. The reference voltage controller supplies a reference voltage selected from at least two voltage values to the second input terminal, and to control the voltage of the second terminal to be a voltage according to the reference voltage.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: September 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Endo, Masanobu Ohmura, Hirotaka Shiomichi
  • Patent number: 10764548
    Abstract: A luminous device for a motor vehicle, said device including a pixelized light source and an optical system that is arranged to project a pixelized light beam emitted by the pixelized light source, the optical system comprising a first mirror arranged to collect and reflect rays of the pixelized light beam emitted by the pixelized light source, a second mirror arranged to reflect the rays reflected by the first mirror, and a third mirror arranged to receive the rays reflected by the second mirror and to reflect these received rays so as to correct field aberrations. The invention enables improved projection of a pixelized light beam by a luminous motor-vehicle device.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: September 1, 2020
    Assignee: VALEO VISION
    Inventors: Guillaume Thin, Antoine De Lamberterie, Samira Mbata, Thomas Canonne, Van Thai Hoang, Vincent Dubois, Francois-Xavier Amiel, Nicolas Lefaudeux
  • Patent number: 10764517
    Abstract: An imaging system for a vehicle may include a first image capture device having a first field of view and configured to acquire a first image relative to a scene associated with the vehicle, the first image being acquired as a first series of image scan lines captured using a rolling shutter. The imaging system may also include a second image capture device having a second field of view different from the first field of view and that at least partially overlaps the first field of view, the second image capture device being configured to acquire a second image relative to the scene associated with the vehicle, the second image being acquired as a second series of image scan lines captured using a rolling shutter. As a result of overlap between the first field of view and the second field of view, a first overlap portion of the first image corresponds with a second overlap portion of the second image.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: September 1, 2020
    Assignee: MOBILEYE VISION TECHNOLOGIES LTD.
    Inventors: Gideon Stein, Efim Belman
  • Patent number: 10754137
    Abstract: A microscope apparatus includes: a light source configured to irradiate a specimen with illumination light; a revolver configured to hold plural objective lenses and arranges the plural objective lenses switchably onto an optical path; a sensor configured to detect an objective lens arranged on the optical path; a first illumination light quantity table configured to store therein a first illumination light quantity set for each of the plural objective lenses; a second illumination light quantity table configured to store therein a second illumination light quantity specified by an observer; an illumination light quantity setting unit configured to set validity/invalidity of the first illumination light quantity and second illumination light quantity; and an illumination controller configured to control light quantity of the light source to the first illumination light quantity or second illumination light quantity validated by the illumination light quantity setting unit.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 25, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Kazuki Murata, Koji Imazeki, Daisuke Mizusawa
  • Patent number: 10749086
    Abstract: An asymmetrically shaped chip-scale packaging (CSP) light-emitting device (LED) includes an LED chip, a photoluminescent structure (or a light-transmitting structure), and a reflective structure. The photoluminescent structure covers the upper surface and/or the edge surface of the LED chip; and the reflective structure at least partially covers the edge surface of the photoluminescent structure. The reflective structure partially reflects the primary light emitted from the edge surface of the LED chip or the converted secondary light radiated from the edge surface of the photoluminescent structure, therefore shaping the radiation pattern asymmetrically.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: August 18, 2020
    Assignee: Maven Optronics Co., Ltd.
    Inventors: Chieh Chen, Chia-Hsien Chang
  • Patent number: 10750152
    Abstract: A system for determining the surface topology and associated color of at least a portion of a three-dimensional structure includes a hand-held device. A scanning system may be configured to provide depth data of the portion. An imaging system may be configured to provide two-dimensional color image data of the portion associated with the plurality of data points. A processor may be operably coupled to the hand-held device and configured to associate the depth data with the color image data.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: August 18, 2020
    Assignee: ALIGN TECHNOLOGY, INC.
    Inventor: Noam Babayoff
  • Patent number: 10735649
    Abstract: A virtual or augmented reality display system that controls power inputs to the display system as a function of image data. Image data itself is made of a plurality of image data frames, each with constituent color components of, and depth planes for displaying on, rendered content. Light sources or spatial light modulators to relay illumination from the light sources may receive signals from a display controlled to adjust a power setting to the light source or spatial light modulator based on control information embedded in an image data frame.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: August 4, 2020
    Assignee: Magic Leap, Inc.
    Inventors: Jose Felix Rodriguez, Ricardo Martinez Perez, Reza Nourai
  • Patent number: 10732745
    Abstract: An LED switch device and a matrix thereof are disclosed. There is an electroluminescent semiconductor element with a first polarity contact and a second polarity contact. There is also a first polarity LED lead frame, to which the electroluminescent semiconductor element is mounted. The first polarity contact of the electroluminescent semiconductor element is electrically connected to the first polarity LED lead frame. The LED switch device has a second polarity LED lead frame electrically connected to the second polarity contact of the electroluminescent semiconductor element. The LED switch device also has a touch sensor lead frame that is electrically connected to a touch sensor lead.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: August 4, 2020
    Inventor: Peter Sui Lun Fong
  • Patent number: 10723263
    Abstract: The color generated by two differently-colored LEDs is maintained over time and different temperatures by sensing their combined output color using two phototransistors having different spectral sensitivities the output voltages of which are correlated to a desired output color. As the combined output color changes, the phototransistors' output voltages will change. The currents provided to the LEDs can thereafter be adjusted to maintain the output voltages and thus maintain the combined output color.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: July 28, 2020
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Irving Morales Rodriguez, Antonio Corona Franco, Marcela Fernandez, Jose Francisco Richardt Osuna
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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