Patents Examined by Que Tan Le
  • Patent number: 11329184
    Abstract: A photodetector according to the present embodiment includes a plurality of light detectors. Each light detector has a first semiconductor layer of a first conductive type and a second semiconductor layer of a second conductive type different from the first conductive type, in which the first semiconductor layer and the second semiconductor layer constitute a PN junction. The photodetector further includes a quench resistor that is optically transmissive and connected to the second semiconductor layer.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: May 10, 2022
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masaki Atsuta, Kazuhiro Suzuki, Ikuo Fujiwara, Honam Kwon, Keita Sasaki, Yuki Nobusa
  • Patent number: 11326940
    Abstract: An ambient light signal adjustment method, a chip and electronic equipment. The method includes: receiving a first ambient light signal which is an ambient light signal acquired by a photo plethysmor graph (PPG) sensor; then determining, according to an intensity of the first ambient light signal automatically, whether to turn on an ambient light cancellation circuit which is configured to adjust the first ambient light signal according to the intensity of the first ambient light signal; and if it is determined to turn on the ambient light cancellation circuit, then adjusting a cancellation signal intensity of the ambient light cancellation circuit automatically to enable an intensity of the adjusted first ambient light signal to be within a preset range. Adjustment of the ambient light signal acquired by the PPG sensor is realized, thereby ensuring accuracy of a wearable device to detect a physiological characteristic of a user.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: May 10, 2022
    Assignee: Shenzhen Goodix Technology Co., Ltd.
    Inventor: Chang Liu
  • Patent number: 11329079
    Abstract: An imaging device including a semiconductor substrate; a photoelectric converter stacked on the semiconductor substrate, the photoelectric converter being configured to generate a signal through photoelectric conversion of incident light; a multilayer wiring structure located between the semiconductor substrate and the photoelectric converter; and circuitry located in the multilayer wiring structure and the semiconductor substrate, the circuitry being configured to detect the signal. The circuitry includes a first capacitance element and a second capacitance element; and a first transistor including a first source and a first drain in the semiconductor substrate and a first gate.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: May 10, 2022
    Inventors: Masashi Murakami, Kazuko Nishimura, Yutaka Abe, Yoshiyuki Matsunaga, Yoshihiro Sato, Junji Hirase
  • Patent number: 11329096
    Abstract: A fingerprint sensing module including an image sensor, a microlens array and a light-shielding layer is provided. The image sensor has multiple pixels. Each of the pixels has multiple light-sensing regions physically separated. Each of the light-sensing regions is adapted to receive an image beam coming from a fingerprint of user. The microlens array is disposed above the image sensor. The microlens array includes multiple microlens. A focus region of each of the microlens covers a portion of the light-sensing regions. The light-shielding layer is disposed between the image sensor and the microlens array. The light-shielding layer has multiple openings, and the positions of the openings are corresponded to the positions of the pixels.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: May 10, 2022
    Assignee: Egis Technology Inc.
    Inventors: Tzu-Yang Peng, Ming-Yuan Cheng, Chung-Yi Wang, Yu-Hsuan Lin
  • Patent number: 11320535
    Abstract: In an optical detection system, received light can be concentrated and presented to a single-pixel photodetector (or an array of relatively few photodetectors). Concentration of received light can be performed by curved concentrator such as a continuously-curved or faceted reflector. A portion or an entirety of the detector might be blinded (e.g., desensitized) by bright interferers such as the sun. An electro-optic shutter such as a liquid crystal (LC) structure can be used to selectively transmit or mask-off portions of the received light. For example, an LC structure can have regions of selectable opacity for a specified polarization of incident light. The LC structure can be controlled to render certain region opaque, such as to suppress interference from unwanted interferers such as the sun, bright lights, or unwanted reflections. An LC structure can also be used to implement a scanned transmit/receive technique.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: May 3, 2022
    Assignee: Analog Devices, Inc.
    Inventors: Harvey Weinberg, Boris Lerner
  • Patent number: 11320521
    Abstract: A light sensor and a sensing method thereof are provided. The light sensor includes a plurality of sensing sub-pixels and a control circuit. The sensing sub-pixels are arranged in an array to form a sensing array. The control circuit is coupled to the sensing sub-pixels. The control circuit operates a plurality of diodes of the sensing sub-pixels in a photodiode mode to sense intensity of ambient light. The control circuit operates the diodes in a Geiger mode or in an avalanche linear mode according to the intensity of the ambient light.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: May 3, 2022
    Assignee: Guangzhou Tyrafos Semiconductor Technologies Co., LTD
    Inventors: Ping-Hung Yin, Jia-Shyang Wang
  • Patent number: 11313796
    Abstract: An optical waveguide (10) includes a substrate (15), a core layer (11) that extends along the longitudinal direction and through which infrared light IR can propagate, and a support (17) formed from a material with a smaller refractive index than the core layer (11) and configured to connect at least a portion of the substrate (15) and at least a portion of the core layer (11) to support the core layer with respect to the substrate (15). A connecting portion (171) of the support (17) connected to the core layer (11) is shifted from the position having the shortest distance from the center to the outer surface in a cross-section perpendicular to the longitudinal direction of the core layer (11).
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: April 26, 2022
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Toshiro Sakamoto, Tatsushi Yagi
  • Patent number: 11313703
    Abstract: In a sensor device, a plurality of light guides having a respective first end and a respective second end are arranged on a common carrier, with the first end of each light guide of the plurality of light guides at a respective defined position on the carrier. At each of the second ends of the light guides there is provided at least one sensor element which exhibits an optical behavior dependent on an analyte. The second ends are at defined perpendicular distances to the carrier. At least two of the second ends differ with respect to the defined perpendicular distances.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: April 26, 2022
    Inventors: Achim Stangelmayer, Gregor Liebsch, Gernot Thomas John, Robert J. Meier, Daniela Obermaier
  • Patent number: 11307087
    Abstract: The present disclosure is directed to optoelectronic modules with substantially temperature-independent performance characteristics and host devices into which such optoelectronic modules can be integrated. In some instances, an optoelectronic module can collect proximity data using light-generating components and light-sensitive components that exhibit temperature-dependent performance characteristics. The light-generating components and light-sensitive components can be configured such that they exhibit complementing temperature-dependent performance characteristics such that the operating performance of the optoelectronic module is substantially temperature independent.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: April 19, 2022
    Assignee: ams Sensors Singapore Pte. Ltd.
    Inventor: Jens Geiger
  • Patent number: 11307088
    Abstract: An optical tomography imaging system includes a signal generator, at least one light emitter, at least one light receiver, a signal processor, and an image processor. The signal generator is configured to generate a periodic signal and a reference signal. The light emitter is configured to be activated by the periodic signal to generate an optical signal passing through an object under test. The light receiver is configured to receive and convert the optical signal passing through the object under test into an electrical signal. The signal processor is configured to generate a comparison signal according to the electrical signal and the reference signal. The image processor is configured to acquire a plurality of disassembled sine waves from the comparison signal and generate a reconstructed image according to the disassembled sine waves.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 19, 2022
    Assignees: National Central University
    Inventors: Min-Chun Pan, Ya-Fen Hsu, Yan-Yang Hsu
  • Patent number: 11307084
    Abstract: An optoelectronic sensor having a reception element and at least one reception lens and an optical filter element, wherein the filter element is arranged without a gap between a first part lens and a second part lens, wherein the part lenses form one of the reception lenses or the reception lens, and wherein the optical filter element has at least one convex or concave shape and received light beams pass through the filter element at the same angle at every entry point or an optoelectronic sensor having a reception element and a reception lens and an optical filter element that is arranged between the reception element and the reception lens, wherein the optical filter element has at least one curved free-form surface so that the received light beams pass through the filter element at the surface of the optical filter element at the same angle at every entry point.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: April 19, 2022
    Assignee: SICK AG
    Inventor: Ralf Ulrich NĂ¼bling
  • Patent number: 11300326
    Abstract: A solar tracker system comprising a plurality of on sun trackers and a plurality of off sun tracker. Each tracker is selectively adjusted to achieve a desired power output of the solar power plant system in an example.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: April 12, 2022
    Assignee: NEXTRACKER INC.
    Inventors: Yu Dong Ma, Yang Liu, Francesco Borrelli, Allan Daly, Ricardo Delgado-Nanez, Alexander W. Au
  • Patent number: 11300502
    Abstract: A time-wavelength optical sampling system may be configured to determine a substance's composition based on variations in optical pulses caused by the substance's absorption of wavelengths of the pulse. A dispersion medium may disperse pulses to form stretched signal pulses that are incident on a substance under test. Optical gating is used to overlap each signal pulse with a portion of a reference pulse to generate a cross-correlation signal corresponding to a portion of the signal pulse, which may be detected by a slow detection speed detector. A controller controls delay introduced to the reference pulses so that different wavelength ranges are sampled for various signal pulses, thereby enabling the entire wavelength range for the signal pulses to be sampled over time without requiring an expensive high-speed optical detector. By analyzing absorption across the entire wavelength range as indicated by cross-correlation signals, the composition of the substance can be identified.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: April 12, 2022
    Assignee: Board of Trustees of the University of Alabama, for and on behalf of the University of Alabama in Huntsville
    Inventors: Lingze Duan, Lin Yang
  • Patent number: 11302725
    Abstract: An image sensor for securing an area of a photodiode includes a pixel area and a transistor area adjacent to the pixel area. The pixel area may include a photodiode and a floating diffusion area. The transistor area may include transistors extending along an edge of the pixel area. The transistors in the transistor area may include a reset transistor, one or more source follower transistors, and one or more selection transistors, and the reset transistor and one source follower transistor adjacent to the reset transistor may share a common drain area. The source follower transistors and the selection transistors may each share a common source area or a common drain area between two adjacent transistors thereof.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: April 12, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jonghyun Go, Jae-Kyu Lee
  • Patent number: 11296134
    Abstract: An image sensor includes a substrate including a sensor array area, a pad area, and a circuit area, a wiring layer on the pad area, and a light-shielding pattern on the sensor array area. The sensor array area includes a first area including active pixels and a second area including optical back pixels. The wiring layer is apart from the substrate by a first distance on the pad area. The light-shielding pattern includes a first portion spaced apart from the substrate by a second distance less than the first distance, a second portion disposed between the first portion and the wiring layer and extending on the same level as the wiring layer, and a third portion disposed between the first portion and the second portion and integrally formed with the first portion and the second portion.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: April 5, 2022
    Inventors: Yu-jin Ahn, Jong-cheol Shin, Min-ji Jung
  • Patent number: 11294033
    Abstract: A device includes a circuitry which has an image sensor with a plurality of pixels, wherein the circuitry obtains a differential mode for a quad of each pixel from the plurality of pixels of the image sensor, being representative of a depth information; obtains a first input based on a common mode signal for the quad of the pixel, being representative of an intensity of ambient light; obtains a second input being representative of a background light rejection ratio of the pixel; and estimates a phase for the pixel from the plurality of pixels of the image sensor based on the differential mode, the first input and the second input.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 5, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Serge Hustin, Jeroen Hermans, Gunter Troll
  • Patent number: 11293799
    Abstract: A sensing device includes an aperture structure having an aperture and imaging optics configured to direct polychromatic light toward the aperture. The imaging optics separates the light according to spectral range longitudinally along a first axis The aperture substantially transmits a spectral range of the light and substantially blocks other spectral ranges of the light. An optical detector is arranged to receive the spectral range of the light that is transmitted through the aperture. The optical detector generate an electrical output that corresponds to a centroid of the spectral range of the light.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: April 5, 2022
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Peter Kiesel, Philipp Schmaelzle, Konrad Bellmann, Markus Beck
  • Patent number: 11296137
    Abstract: A photodetector device includes a semiconductor material layer and at least one photodiode in the semiconductor material layer. The at least one photodiode is configured to be biased beyond a breakdown voltage thereof to generate respective electrical signals responsive to detection of incident photons. The respective electrical signals are independent of an optical power of the incident photons. A textured region is coupled to the semiconductor material layer and includes optical structures positioned to interact with the incident photons in the detection thereof by the at least one photodiode. Two or more photodiodes may define a pixel of the photodetector device, and the optical structures may be configured to direct the incident photons to any of the two or more photodiodes of the pixel.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: April 5, 2022
    Inventor: Hod Finkelstein
  • Patent number: 11290621
    Abstract: Sensor housings, modules, and luminaires comprising the same are provided. The sensor housings and modules set forth herein have improved heat sinking abilities for dissipating heat from a sensor while simultaneously facilitating thermal isolation of the sensor. Briefly, a sensor housing described herein comprises a cavity for housing a sensor and a heat sink. The heat sink is configured to dissipate heat from the sensor housing and thermally isolate the sensor housing from other heat generating components, such as other portions of a luminaire.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: March 29, 2022
    Inventors: Mark Youmans, Hormoz Benjamin, Theodore Lowes
  • Patent number: 11287515
    Abstract: A light ranging system including a shaft; a first circuit board assembly that includes a stator assembly comprising a plurality of stator elements arranged about the shaft on a surface of the first circuit board assembly; a second circuit board assembly rotationally coupled to the shaft, wherein the second circuit board assembly includes a rotor assembly comprising a plurality of rotor elements arranged about the shaft on a surface of the second circuit board assembly such that the plurality of rotor elements are aligned with and spaced apart from the plurality of stator elements; a stator driver circuit disposed on either the second or the first circuit board assemblies and configured to provide a drive signal to the plurality of stator elements, thereby imparting an electromagnetic force on the plurality of rotor elements to drive a rotation of the second circuit board assembly about the shaft; and a light ranging device mechanically coupled to the second circuit board assembly such that the light ranging d
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: March 29, 2022
    Assignee: Ouster, Inc.
    Inventors: Angus Pacala, Mark Frichtl, Marvin Shu, Eric Younge