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：US20240118393A1

公开(公告)日：2024-04-11

申请号：US18045652

申请日：2022-10-11

Applicant: Microvision, Inc.

Inventor： Barton Plimmer ,  Jonathan Cross ,  Warren Scott

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

CPC classification number: G01S7/484 ,  G01S7/4814 ,  G01S7/4817 ,  G01S7/4865 ,  G01S17/894

Abstract: The embodiments described herein provide systems and methods that can improve performance in scanning laser devices. Specifically, the systems and methods emit emission control pulse sets that are used to detect when objects (e.g., persons) are within a relatively close safety range. Then, higher energy long-range pulse sets are conditionally emitted only when objects were not detected within the safety range with the emission control pulse sets. These emission control pulse sets are emitted variable timing and/or variable energy that is determined at least in part on whether previous emission control pulse sets detected an object with the safety range. The use of emission control pulse sets with variable timing and/or variable energy can provide for improved reliability of object detection in a safety range, while still meeting the energy limits needed for eye safety.

公开(公告)号：US20210088778A1

公开(公告)日：2021-03-25

申请号：US16579223

申请日：2019-09-23

Applicant: Microvision, Inc.

Inventor： Jonathan Cross ,  Christopher Brian Adkins

IPC: G02B26/10 ,  H04N9/31

Abstract: A scanning laser projection system includes a virtual protective housing circuit to automatically reduce power levels of visible laser light pulses when necessary to render the laser projection system eye-safe. IR laser light pulses are scanned out in front of visible laser light pulses in a field of view, and emitted power of visible laser light pulses is modulated based on attributes of reflections of the IR laser light pulses.