US 12,009,376 B2
Highly integrated transmitter module for LiDAR
Yue Lu, Mountain View, CA (US); Yu-Ching Yeh, Mountain View, CA (US); Yonghong Guo, Mountain View, CA (US); and Youmin Wang, Mountain View, CA (US)
Assigned to BEIJING VOYAGER TECHNOLOGY CO., LTD., Beijing (CN)
Filed by BEIJING VOYAGER TECHNOLOGY CO., LTD., Beijing (CN)
Filed on Dec. 22, 2020, as Appl. No. 17/131,617.
Prior Publication US 2022/0199666 A1, Jun. 23, 2022
Int. Cl. G01C 3/08 (2006.01); G01S 7/481 (2006.01); G01S 7/4863 (2020.01); G01S 17/02 (2020.01); H01L 27/146 (2006.01); H01S 5/183 (2006.01); H01S 5/40 (2006.01)
CPC H01L 27/14618 (2013.01) [G01S 7/481 (2013.01); G01S 7/4863 (2013.01); G01S 17/02 (2013.01); H01L 27/14607 (2013.01); H01L 27/14623 (2013.01); H01S 5/183 (2013.01); H01S 5/4025 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical sensing system, comprising:
an integrated transmitter module configured to emit an optical signal into an environment surrounding the optical sensing system,
wherein the integrated transmitter module comprises a laser emitter, one or more driving integrated circuits (ICs), and one or more optics integrated into a chamber that is hermetically sealed,
wherein a first set of pins is disposed on an inner surface of the chamber and electrically connected to the one or more driving ICs through a set of bonding wires,
wherein the one or more driving ICs and the laser emitter are integrated onto a printed circuit board (PCB), and
wherein the PCB and the one or more optics are mounted onto a substrate, and the PCB and the substrate are different components but comprise an identical material;
a photodetector configured to receive the optical signal reflected from the environment surrounding the optical sensing system and convert the received optical signal to an electrical signal; and
a readout circuit configured to convert the electrical signal to a digital signal,
wherein the photodetector and the readout circuit are located outside the chamber enclosing the integrated transmitter module.