公开(公告)号：US20220244358A1

公开(公告)日：2022-08-04

申请号：US17165017

申请日：2021-02-02

Applicant: Microvision, Inc.

Inventor： James Dean ,  Christopher Cannon ,  Alga Lloyd Nothern, III ,  Joel Sandgathe

IPC: G01S7/481 ,  G01S17/89 ,  G01S7/497 ,  G01S7/487 ,  G01S7/484 ,  G01S17/10

Abstract: The embodiments described herein provide systems and methods that can facilitate increased detector sensitivity and reliability in a scanning laser device. Specifically, the systems and methods utilize detectors with multiple sensors that are configured to receive reflections of laser light pulses from objects within a scan field. These multiple sensors are configured to receive these reflections through the same optical assembly used to scan the laser light pulses out to the scan field. Furthermore, the multiple sensors are configured to at least partially cancel the effects of back reflections from within the optical assembly itself. The cancellation of the effects of back reflections from within the optical assembly can improve the sensitivity of the detector, particularly for the detection of low energy reflections of laser pulses from within the scan field.

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.

公开(公告)号：US11982765B2

公开(公告)日：2024-05-14

申请号：US17165017

申请日：2021-02-02

Applicant: Microvision, Inc.

Inventor： James Dean ,  Christopher Cannon ,  Alga Lloyd Nothern, III ,  Joel Sandgathe

IPC: G01S7/48 ,  G01S7/481 ,  G01S7/484 ,  G01S7/487 ,  G01S7/497 ,  G01S17/10 ,  G01S17/89

CPC classification number: G01S7/4817 ,  G01S7/484 ,  G01S7/487 ,  G01S7/497 ,  G01S17/10 ,  G01S17/89

Abstract: The embodiments described herein provide systems and methods that can facilitate increased detector sensitivity and reliability in a scanning laser device. Specifically, the systems and methods utilize detectors with multiple sensors that are configured to receive reflections of laser light pulses from objects within a scan field. These multiple sensors are configured to receive these reflections through the same optical assembly used to scan the laser light pulses out to the scan field. Furthermore, the multiple sensors are configured to at least partially cancel the effects of back reflections from within the optical assembly itself. The cancellation of the effects of back reflections from within the optical assembly can improve the sensitivity of the detector, particularly for the detection of low energy reflections of laser pulses from within the scan field.