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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11226403 B1

PDFFull Text
Date of Patent:
Jan. 18, 2022

Filed:

Apr. 20, 2018

Chip-scale coherent lidar with integrated high power laser diode

Applicant:

GM Global Technology Operations Llc, Detroit, MI (US);

Inventors:

Keyvan Sayyah, Santa Monica, CA (US);

Raymond Sarkissian, Studio City, CA (US);

Oleg Efimov, Thousand Oaks, CA (US);

Pamela R. Patterson, Los Angeles, CA (US);

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);

Attorney:

Cantor Colburn LLP

Primary Examiner:

Luke D Ratcliffe

Int. Cl.
CPC ...
G01S 7/481 (2006.01); G01S 7/4911 (2020.01); G01S 17/58 (2006.01); G01S 17/34 (2020.01); G01S 17/931 (2020.01); G01S 17/02 (2020.01); G02B 6/122 (2006.01); G02B 6/42 (2006.01); H01L 31/0232 (2014.01); H01L 31/16 (2006.01); G01S 17/00 (2020.01); G01S 17/32 (2020.01); G01S 7/491 (2020.01); G01S 17/42 (2006.01); G01S 17/86 (2020.01); G01S 7/499 (2006.01); G02B 6/27 (2006.01); H01L 23/544 (2006.01); G01S 7/4914 (2020.01); G01S 7/497 (2006.01); B81B 7/02 (2006.01); G02B 27/30 (2006.01); H01S 5/125 (2006.01); G01S 7/4913 (2020.01); G02B 6/00 (2006.01);
U.S. Cl.
CPC ...
G01S 7/4815 (2013.01); B81B 7/02 (2013.01); G01S 7/4816 (2013.01); G01S 7/4817 (2013.01); G01S 7/4818 (2013.01); G01S 7/491 (2013.01); G01S 7/499 (2013.01); G01S 7/4911 (2013.01); G01S 7/4913 (2013.01); G01S 7/4914 (2013.01); G01S 7/4972 (2013.01); G01S 17/003 (2013.01); G01S 17/02 (2013.01); G01S 17/32 (2013.01); G01S 17/34 (2020.01); G01S 17/42 (2013.01); G01S 17/58 (2013.01); G01S 17/86 (2020.01); G01S 17/931 (2020.01); G02B 6/122 (2013.01); G02B 6/2766 (2013.01); G02B 6/4209 (2013.01); G02B 27/30 (2013.01); H01L 23/544 (2013.01); H01L 31/02327 (2013.01); H01L 31/16 (2013.01); H01S 5/125 (2013.01); B81B 2207/03 (2013.01); G02B 2006/0098 (2013.01); H01L 2223/54426 (2013.01); H01L 2223/54486 (2013.01);
Abstract

A chip-scale coherent lidar system includes a master oscillator integrated on a chip to simultaneously provide a signal for transmission and a local oscillator (LO) signal. The system also includes a beam steering device to direct an output signal obtained from the signal for transmission out of the system, and a combiner on the chip to combine the LO signal and a return signal resulting from a reflection of the output signal by a target. One or more photodetectors obtain a result of interference between the LO signal and the return signal to determine information about the target.

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