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    Scanning Laser Devices and Methods with Multiple Range Emission Control Pulse Sets
    1.
    发明公开
    Scanning Laser Devices and Methods with Multiple Range Emission Control Pulse Sets 审中-公开

    公开(公告)号：US20240192376A1

    公开(公告)日：2024-06-13

    申请号：US18063429

    申请日：2022-12-08

    Applicant: Microvision, Inc.

    Inventor： Jonathan Cross ,  James Dean ,  Alga Lloyd Nothern, III

    IPC: G01S17/931 ,  G01S7/4861 ,  G01S17/08

    CPC classification number: G01S17/931 ,  G01S7/4861 ,  G01S17/08

    Abstract: The embodiments described herein provide systems and methods that can improve performance in scanning laser devices. Specifically, the systems and methods emit first emission control pulse sets that are used to detect when objects (e.g., persons) are within a relatively close first safety range. Then second emission control pulses to detect when objects are within a second safety range. Then, higher energy long-range pulse sets are conditionally emitted only when objects were not detected within the first and second safety ranges with the first and second emission control pulse sets. The use of first and second emission control pulse sets can provide for improved reliability of nearby object detections, while still meeting the energy limits needed for eye safety.

    Analogue-to-digital converter
    2.
    发明授权
    Analogue-to-digital converter 有权

    公开(公告)号：US11984908B2

    公开(公告)日：2024-05-14

    申请号：US17298449

    申请日：2019-11-27

    Applicant: Microvision, Inc.

    Inventor： Ralf Beuschel

    IPC: H03M1/50 ,  G01S7/484 ,  G01S7/4865 ,  H03M1/56 ,  G01S17/931

    CPC classification number: H03M1/56 ,  G01S7/484 ,  G01S7/4866 ,  G01S17/931

    Abstract: Described herein are analog-to-digital converters (ADCs) that utilize time-to-digital converters (TDCs) and a histogram block to generate time-correlated histograms from analog signals. In some implementations, the time-to-digital converters determine time intervals for which the analog signal above or below a ramp signal, and the histogram block generates the time-correlated histograms of values using the determined time intervals. Furthermore, in some implementations, the analog-to-digital converters receive the analog signals from photodiodes, such as photo diodes used in Light Detection and Ranging (LIDAR) devices. In some such applications, the use of time intervals to generate time-correlated histograms may be used to reduce the effects of time jitter.

    EBeam inspection method
    5.
    发明授权
    EBeam inspection method 有权

    公开(公告)号：US11315237B2

    公开(公告)日：2022-04-26

    申请号：US14952067

    申请日：2015-11-25

    Applicant: Hermes Microvision, Inc.

    Inventor： Wei Fang

    IPC: G06T7/00 ,  G06T7/30 ,  G01N23/2251

    Abstract: An image is obtained by using a charged particle beam, and a design layout information is generated to select patterns of interest. Grey levels among patterns can be compared with each other to identify abnormal, or grey levels within one pattern can be compared to a determined threshold grey level to identify abnormal.

    Optical Power Reduction by Masking Pixels of Image Content
    7.
    发明申请
    Optical Power Reduction by Masking Pixels of Image Content 有权

    公开(公告)号：US20210278756A1

    公开(公告)日：2021-09-09

    申请号：US16807887

    申请日：2020-03-03

    Applicant: Microvision, Inc.

    Inventor： Henry J. Baron

    IPC: G03B21/20 ,  H04N9/31 ,  G02B26/10

    Abstract: A scanning laser projection system includes a virtual protective housing circuit to automatically reduce accessible emissions of visible laser light by decimating areas of a projected image to reduce optical power exposure levels for safety, comfort, aesthetic, or system classification purposes. IR laser light pulses are scanned in a field of view, and a percentage of visible laser light pulses are blanked based on attributes of reflections of the IR laser light pulses.

    Microelectromechanical (MEMS) Scanners for Scanning Laser Devices
    8.
    发明申请
    Microelectromechanical (MEMS) Scanners for Scanning Laser Devices 有权

    公开(公告)号：US20210018746A1

    公开(公告)日：2021-01-21

    申请号：US16511546

    申请日：2019-07-15

    Applicant: Microvision, Inc.

    Inventor： Matthew Ellis

    IPC: G02B26/08 ,  G02B26/10 ,  H02N2/02

    Abstract: The embodiments described herein include scanners that can provide improved scanning laser devices. Specifically, the embodiments described herein provide scanners with a modular construction that includes one or more separately formed piezoelectric actuators coupled to a microelectromechanical system (MEMS) scan plate, flexure structures, and scanner frame. Such modular scanners can provide improved scanning laser devices, including scanning laser projectors and laser depth scanners, LIDAR systems, 3D motion sensing devices, gesture recognition devices, etc.

    Adaptive Lidar Scanning Methods
    10.
    发明申请
    Adaptive Lidar Scanning Methods 审中-公开

    公开(公告)号：US20200379089A1

    公开(公告)日：2020-12-03

    申请号：US16426852

    申请日：2019-05-30

    Applicant: Microvision, Inc.

    Inventor： Jonathan A. Morarity ,  Alga Lloyd Nothern III ,  Thomas Nonn ,  Sumit Sharma

    IPC: G01S7/481 ,  G01S17/10

    Abstract: A light detection and ranging system includes synchronously scanning transmit and receive mirrors that scan a pulsed fanned laser beam in two dimensions. Imaging optics image a receive aperture onto an arrayed receiver that includes a plurality of light sensitive devices. Adaptive methods dynamically modify the size and location of the field of view as well as laser pulse properties in response to internal and external sensors data.

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