Patents Examined by Don J Williams
  • Patent number: 11914202
    Abstract: The optical module includes a housing, a lid that closes an opening of the housing, an optical component arranged inside the housing, and a printed circuit board arranged on a front surface of the lid outside the housing so as to be used as a board on which a control circuit that controls the optical component is mounted. The optical module further includes a side electrode that is provided on a side surface of the housing and configured to be electrically connected to an electrode of the optical component; and a flexible substrate that provides electrical connection between the side electrode and an electrode of the control circuit. The optical module can be miniaturized by integrating the optical component and the control circuit.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: February 27, 2024
    Inventor: Takuya Nakao
  • Patent number: 11906351
    Abstract: A photonic integrated circuit and a method for its manufacture are provided. In an embodiment, an intermetal dielectric layer, for example, a silicon oxide layer, is contiguous between an upper metal layer and a lower metal layer on a substrate. One or more waveguides having top and bottom faces are formed in respective waveguide layers within the intermetal dielectric layer between the upper and lower metal layers. There is a distance of at least 600 nm from the upper metal layer to the top face of the uppermost of the several waveguides. There is a distance of at least 600 nm from the lower metal layer to the bottom face of the lowermost of the several waveguides. The waveguides are formed of silicon nitride for longer wavelengths and alumina for shorter wavelengths. These dimensions and materials are favorable for CMOS processing, among other things.
    Type: Grant
    Filed: June 22, 2022
    Date of Patent: February 20, 2024
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Michael Gehl, Christopher Todd DeRose, Hayden James McGuinness, Daniel Stick, Randolph R. Kay, Matthew G. Blain
  • Patent number: 11902687
    Abstract: A generator of phases of a detector integrates at least one elementary machine for interpreting a microcode stored in a register. Each elementary machine includes at least one control input having a logic level change detector. Each elementary machine also includes at least one phase output having a controlled switch, enabling to define the logic level of the phase output, and a controlled inverter enabling to toggle the logic level of the phase output. Further, each elementary machine includes at least one clock signal associated with a counter, and a unit for loading the instructions and the arguments stored in the register, the instructions being coded over 3 bits.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: February 13, 2024
    Assignee: LYNRED
    Inventor: Philippe Mejean
  • Patent number: 11901168
    Abstract: A method of controlling the performance of a night vision device includes supplying, by a power supply, to a microchannel plate of a light intensifier tube, a control voltage that controls a gain of the microchannel plate, determining an amount of compensation to apply to the control voltage based on a change to the control voltage attributed to a change in temperature of an operating environment of the night vision device, adjusting the control voltage in accordance with the amount of compensation to obtain a compensated control voltage, and supplying, by the power supply, the compensated control voltage to the microchannel plate of the light intensifier tube. The method may further include determining whether the night vision device has been used for a predetermined amount of time, and only after that predetermined amount of time, is the method configured to supply the compensated control voltage.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: February 13, 2024
    Assignee: Elbit Systems of America, LLC
    Inventors: Mark Michalski, Ransom Hal Castleberry, John A. Balboni, Arlynn W. Smith, Raymond Leo Chabot
  • Patent number: 11899160
    Abstract: A system to detect obstacles includes a power beam transmission circuit, a power beam reception circuit arranged to receive a power beam from the power beam transmission circuit, an emitter module, and a detector module arranged to distinguish between a first characteristic and a second characteristic. The emitter module includes a first emitter arranged to emit a first signal having the first characteristic, the first signal emitted in proximity to the power beam, and a second emitter arranged to emit a second signal having the second characteristic, the second characteristic different from the first characteristic, the second signal emitted in proximity to the first signal. The detector module includes a first detector arranged to respond to the first signal emitted by the first emitter, wherein the detector module is arranged to determine when an obstacle is in or near a line-of-sight transmission path between the first emitter and the first detector.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: February 13, 2024
    Assignee: LASERMOTIVE, INC.
    Inventors: Jordin T. Kare, Thomas J. Nugent, David Bashford, Carsten Casey Erickson, Thomas W. Bashford
  • Patent number: 11885672
    Abstract: A wireless battery-powered daylight sensor for measuring a total light intensity in a space is operable to transmit wireless signals using a variable transmission rate that is dependent upon the total light intensity in the space. The sensor comprises a photosensitive circuit, a wireless transmitter for transmitting the wireless signals, a controller coupled to the photosensitive circuit and the wireless transmitter, and a battery for powering the photosensitive circuit, the wireless transmitter, and the controller. The photosensitive circuit is operable to generate a light intensity control signal in response to the total light intensity in the space. The controller transmits the wireless signals in response to the light intensity control signal using the variable transmission rate that is dependent upon the total light intensity in the space. The variable transmission rate may be dependent upon an amount of change of the total light intensity in the space.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: January 30, 2024
    Assignee: Lutron Technology Company LLC
    Inventors: James P. Steiner, Greg Edward Sloan, Nathan A. Boring
  • Patent number: 11885675
    Abstract: Electro-optical conversion of an input analog signal and optical modulation of the optical signal to provide light of different intensity levels to 2n photodetection sites whose outputs can be encoded as an n-bit digital output value. The sample rate can exceed 10 GHz (rates above 100 GHz are possible) with much greater simplicity of electronic circuitry.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: January 30, 2024
    Inventor: Najeeb Ashraf Khalid
  • Patent number: 11874478
    Abstract: The present invention is directed to a light gathering lens that instantaneously corrects for the effect of varying distance between an object and a sensor such as a range finding sensor or LiDAR. Methods of designing these lenses using both traditional lenses and exotic metamaterials and gradient index materials are disclosed, as well as methods of optimizing a design for a given detector type and application. Range-finding systems using these lenses in practice to optically correct for radiometric variation of returned signals received from an object of varying distances are further disclosed. Lenses and range-finding systems suitable for use in a variety of electromagnetic wavelength ranges are disclosed including but not limited to visible, infrared, and millimeter wave regimes.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: January 16, 2024
    Assignee: Golden Gate Light Optimization LLC
    Inventor: Jason D Mudge
  • Patent number: 11874163
    Abstract: The present application discloses an apparatus configured to measure characteristics of high power beams of laser energy used in material processing. In one embodiment, the apparatus includes a housing having a first compartment and a second compartment separated from each other to reduce the transfer of thermal energy between them. Optical modules having optical sensors configured to measure characteristics of the high power beam are mounted in the first compartment. An optical window operative to allow a significant portion of the beam to propagate therethrough is mounted in an intermediate housing member separating the first and second compartments. A removable and replaceable beam dump configured to absorb most of the high power beam is positioned in the second compartment. The removability/replaceability of the beam dump enables operation of the apparatus without active cooling of the beam dump assembly, simplifying the apparatus and protecting the optical sensors in the first compartment.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: January 16, 2024
    Inventors: Oleg Zinoviev, Karol Sanilevici, Alexandr Superfin
  • Patent number: 11863886
    Abstract: In one example, an apparatus comprises: multiple distinct sets of photodiodes, wherein each set of photodiodes includes one or more photodiodes, one or more charge sensing units, and a controller. The controller is configured to: transfer charge generated by the one or more photodiodes in response to a different component of incident light to the one or more charge sensing units in order to convert the charge to voltages; perform one or more quantization processes of a plurality of quantization processes corresponding to a plurality of intensity ranges, wherein the one or more quantization processes quantizes the voltages from the one or more charge sensing units to digital values representing components of a pixel of different wavelength ranges; and generate a pixel value based on the at least some of the digital values.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: January 2, 2024
    Assignee: Meta Platforms Technologies, LLC
    Inventors: Andrew Samuel Berkovich, Xinqiao Liu, Song Chen, Nicholas Daniel Trail, Michael Patrick Schaub
  • Patent number: 11860029
    Abstract: Provided are a light intensity detection circuit, a light intensity detection method and an light intensity detection apparatus. The light intensity detection circuit includes a photoelectric conversion sub-circuit, a source follower sub-circuit, a reset sub-circuit, a read sub-circuit and a sense sub-circuit. The photoelectric conversion sub-circuit generates a corresponding electrical signal according to an incident light signal, and outputs it to a first node; the source follower sub-circuit generates a corresponding voltage signal or current signal according to the electrical signal of the first node and outputs it to a second node; the read sub-circuit reads the voltage signal or current signal of the second node to determine an incident light intensity; the reset sub-circuit provides a voltage at a offset voltage terminal to the first node.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: January 2, 2024
    Assignees: Beijing BOE Sensor Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Kunjing Chung, Dexi Kong
  • Patent number: 11853720
    Abstract: A vacuum fluctuation quantum random number generator chip includes a heat sink substrate, a laser fixed to a first end of the heat sink substrate, at least two photoelectric detectors fixed to a second end of the heat sink substrate, and a beam splitter fixed to the heat sink substrate and located between the laser and the at least two photoelectric detectors. Light of the laser propagates through the beam splitter. The at least two photoelectric detectors are respectively positioned at optical path outlets of the beam splitter.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: December 26, 2023
    Inventors: Qiechun Chen, Zhiguo Yang
  • Patent number: 11840933
    Abstract: A foreign object debris (FOD) detection system for a gas turbine engine comprises a light detection and ranging (LiDAR) sensor assembly. The LiDAR sensor assembly is configured to scan a pre-determined volume within an inlet of the gas turbine engine. The inlet may be defined by a nacelle of the gas turbine engine. The LiDAR sensor assembly may comprise a single transceiver, a transmitter and a receiver, a plurality of transmitters and a receiver, or a plurality of receivers and a transmitter.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: December 12, 2023
    Inventors: Alek Gavrilovski, William Donat
  • Patent number: 11841230
    Abstract: Aspects of the disclosure are directed to acquiring aligned geographic coordinates of a vertical position. In one aspect, a vertical navigation system includes a light source to generate a source beam; a beam splitter to generate a first and a second source references derived from the source beam; a hollow retroreflector to produce a first and a second vertical references derived from the first and the second source references; an attitude sensor to capture a plurality of reference stars and to measure a first set of angles for the first vertical reference and a second set of angles for the second vertical reference, the first set of angles and the second set of angles are relative to the plurality of reference stars; and a processor to produce the aligned geographical coordinates using the first set of angles, the second set of angles, a gravity vector measurement and a time signal.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: December 12, 2023
    Assignee: Optical Physics Company
    Inventor: Richard A. Hutchin
  • Patent number: 11843387
    Abstract: An optoelectronic system includes a transmit side and a receive side. The transmit side and the receive side each include an oversampled phase locked loop configured to receive a decimated system clock signal. Each phase-locked loop is configured to output a high frequency sampling clock signal that, in the case of the transmit side, may be leveraged to generate an arbitrary current waveform that, in turn, can be delayed by a delay-locked loop before being applied to a current-controlled light emitting element. The receive side can generate a clock signal at the same high frequency as the transmit side and can be configured to trigger a reset of the transmit side so that the high frequency clock signals between the transmit and receive sides are synchronized.
    Type: Grant
    Filed: August 5, 2021
    Date of Patent: December 12, 2023
    Assignee: Apple Inc.
    Inventors: Susan A. Thompson, Anup K. Sharma, Christopher G Zeleznik, Harish Venkataraman
  • Patent number: 11833607
    Abstract: A laser alignment system is used to align an output fiber with a fiber laser, for example, when coupling a feeding fiber to a process fiber using a beam coupler or switch. The alignment system includes a laser alignment apparatus that is coupled at a first end to the output fiber and at a second end to a beam dump/power meter. The alignment apparatus defines a light passage and a light capture chamber along the light passage. When light is not aligned into the core of the output fiber, at least a portion of the light passing out of the output fiber will be captured by the light capture chamber and detected by a photodetector in optical communication with the light capture chamber. By monitoring the readings of the photodetector, the output fiber may be properly aligned with the laser light from the fiber laser.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: December 5, 2023
    Inventor: Yuri Grapov
  • Patent number: 11835383
    Abstract: There is provided an optical system comprising a light conduit. The light conduit comprises a first light pipe, a second light pipe, and a first bridge to mechanically couple the first light pipe to the second light pipe. The first light pipe has a first inlet to receive a first input light signal and a first outlet to emit at least a portion of the first input light signal to form a first output light signal. Moreover, the second light pipe has a second inlet to receive a second input light signal and a second outlet to emit at least a portion of the second input light signal to form a second output light signal. Furthermore, the first bridge has a first end mechanically coupled to the first light pipe and a second end mechanically coupled to the second light pipe.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: December 5, 2023
    Assignee: GOOGLE LLC
    Inventors: Victor Emile Isbrucker, Daniel J. Effinger, Joshua Moore
  • Patent number: 11835382
    Abstract: A portable electronic device includes a housing, a front cover defining a front side of the portable electronic device, a display stack below the front cover and comprising a plurality of display layers configured to produce a graphical output in a display region of the display stack, the graphical output visible through the front cover, and a light sensor module positioned at least partially within the housing and coupled to the display stack in the display region. The light sensor module may be configured to receive ambient light passing through the front cover and through the plurality of display layers and, while a blanking interval is positioned over the light sensor module, produce an output corresponding to the received ambient light, the portable electronic device configured to determine an ambient light value based at least in part on the output from the light sensor module.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: December 5, 2023
    Assignee: APPLE INC.
    Inventors: Jason B. Neevel, Christopher S. Tomasetta, Jonathan M. Lee, Ekaterina Pease, Nicholas Merz, Daniel Jarvis, Michael B. Wittenberg, Jared P. Ostdiek, Rasamy Phouthavong, David A. Pakula, Richard H. Koch, Marwan Rammah, Ian A. Spraggs, Laura M. Burke
  • Patent number: 11821786
    Abstract: A pyranometer is provided which can measure the precise amount of solar radiation/solar irradiance continuously and stably while suppressing the generation of dew or frost by a simple configuration even in changing external environment. A pyranometer includes: a housing having an opening, and having thermal conductivity; a dome provided at the opening, and having light transmittance; a sensor part provided in an internal space formed by the housing and the dome, and for measuring an intensity of a sunlight made incident through the dome; and a heat generating element provided heat conductably to a part of the housing, opposite to the opening across the internal space.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: November 21, 2023
    Inventors: Toshikazu Hasegawa, Satoshi Nishikawa, Masayuki Yamada
  • Patent number: 11817464
    Abstract: A photoelectric conversion apparatus includes a semiconductor substrate, a plurality of avalanche diodes formed within the semiconductor substrate, the plurality of avalanche diodes including a first avalanche diode and a second avalanche diode, and a trench structure formed between the first avalanche diode and the second avalanche diode in a plan view. Each of the avalanche diodes includes a first semiconductor region of a first conductivity type and a second semiconductor region of a second conductivity type. A contact plug for supplying a potential to the second semiconductor region of the first avalanche diode is formed, and the contact plug is provided at a position where the contact plug overlaps with the trench structure in a plan view.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: November 14, 2023
    Inventor: Junji Iwata