中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

31 records (took 0.027 seconds)

    FMCW LiDAR using single-photon detectors
    1.
    发明申请
    FMCW LiDAR using single-photon detectors 有权

    公开(公告)号：US20250035760A1

    公开(公告)日：2025-01-30

    申请号：US18623080

    申请日：2024-04-01

    Applicant: Apple Inc.

    Inventor： Shingo Mandai ,  Cristiano L. Niclass ,  Vyshakh Sanjeev

    IPC: G01S7/4912 ,  G01S7/481 ,  G01S7/4915 ,  G01S17/34

    Abstract: Optical sensing apparatus includes a transmitter, which is configured to transmit outgoing frequency-modulated (FM) coherent optical radiation toward a target scene. A receiver includes an array of single-photon detectors, which are configured to output electrical pulses in response to photons that are incident on the detectors. Optics image the target scene onto the array while diverting a part of the outgoing FM coherent optical radiation to form a local beam, which mixes with incoming optical radiation from the target scene. Processing circuitry is configured to compute counts of the electrical pulses output as a function of time by the single-photon detectors in response to the mixed optical radiation, to extract beat frequencies from the computed counts, and to measure ranges of points in the target scene responsively to the beat frequencies.

    SPAD-Based Photon Detectors with Multi-Phase Sampling TDCS
    2.
    发明申请
    SPAD-Based Photon Detectors with Multi-Phase Sampling TDCS 有权

    公开(公告)号：US20230015431A1

    公开(公告)日：2023-01-19

    申请号：US17944738

    申请日：2022-09-14

    Applicant: Apple Inc.

    Inventor： Shingo Mandai ,  Cristiano L. Niclass ,  Moshe Laifenfeld ,  Or Nahir ,  Vyshakh Sanjeev

    IPC: H01L31/02 ,  H04N5/369 ,  H01L27/146 ,  H04N5/378 ,  H04N5/3745 ,  H01L31/107

    Abstract: A method of building a moving average histogram of photon times of arrival includes, for each time interval in first and second subsets of time intervals, latching a time reference corresponding to a time of receipt of an avalanche timing output signal of a single-photon avalanche diode (SPAD), and advancing a count stored at a memory address corresponding to the latched time reference. The memory address corresponds to a range of time references. The method further includes reading and clearing a first set of counts after the first subset of time intervals; phase-shifting the sequence of time references with respect to a set of memory addresses after the first subset of time intervals; reading and clearing a second set of counts after the second subset of time intervals; and building the moving average histogram using at least the first and second sets of counts.

    Transistor Integration with Stacked Single-Photon Avalanche Diode (SPAD) Pixel Arrays
    3.
    发明申请
    Transistor Integration with Stacked Single-Photon Avalanche Diode (SPAD) Pixel Arrays 有权

    公开(公告)号：US20220102404A1

    公开(公告)日：2022-03-31

    申请号：US17473855

    申请日：2021-09-13

    Applicant: Apple Inc.

    Inventor： Hong Wei Lee ,  Cristiano L. Niclass ,  Shingo Mandai ,  Xiaofeng Fan

    IPC: H01L27/146 ,  H01L31/107

    Abstract: Disclosed herein are photodetectors using arrays of pixels with single-photon avalanche diodes (SPADs). The pixel arrays may have configurations that include one or more control transistors for each SPAD collocated on the same chip or wafer as the pixels and located on a surface of the wafer opposite to the light gathering surface of the pixel arrays. The control transistors may be positioned or configured for interconnection with a logic chip that is bonded to the wafer of the pixel array. The pixels may be formed in a substrate having doping gradient. The control transistors may be positioned on or within the SPADs, or adjacent to, but isolated from, the SPADs. Isolation between the individual SPADs and the respective control transistors may make use of shallow trench isolation regions or deep trench isolation regions.

    Selection of pulse repetition intervals for sensing time of flight
    7.
    发明申请
    Selection of pulse repetition intervals for sensing time of flight 有权

    公开(公告)号：US20220350026A1

    公开(公告)日：2022-11-03

    申请号：US17863412

    申请日：2022-07-13

    Applicant: Apple Inc.

    Inventor： Moshe Laifenfeld ,  Harish Venkataraman ,  Cristiano L Niclass ,  Doron Shinbox ,  Shingo Mandai ,  Susan A. Thompson

    IPC: G01S17/894 ,  G01S17/10 ,  G01S7/481 ,  G01S7/4865 ,  G01S7/4863 ,  G01S7/484

    Abstract: Sensing apparatus includes a radiation source, which emits pulses of optical radiation toward multiple points in a target scene. A receiver receives the optical radiation that is reflected from the target scene and outputs signals that are indicative of respective times of flight of the pulses to and from the points in the target scene. Processing and control circuitry selects a first pulse repetition interval (PRI), a second PRI, greater than the first PRI, and a third PRI, greater than the second PRI, from a permitted range of PRIs, drives the radiation source to emit sequences of the pulses at the first PRI, the second PRI, and the third PRI, and processes the signals output by the receiver in response to the first, second, and third sequences of the pulses in order to compute respective depth coordinates of the points in the target scene.

Patent Agency Ranking