Invention Grant
- Patent Title: Transimpedance amplifier for Lidar system
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Application No.: US16582494Application Date: 2019-09-25
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Publication No.: US11614543B2Publication Date: 2023-03-28
- Inventor: Timothy J. Talty , Michael Mulqueen , James Chingwei Li , Ken R. Elliott
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Cantor Colburn LLP
- Main IPC: G01S17/89
- IPC: G01S17/89 ; G01S7/4865 ; G01S7/4861 ; G02F1/11 ; G02B6/42

Abstract:
A Lidar system, photonic chip and method of detecting an object. The photonic chip includes a laser and one or more photodetectors. The laser generates a transmitted light beam. The one or more photodetectors are receptive to a reflected light beam that is a reflection of the transmitted light beam from an object and generate an electrical signal as output in response to the reflected light beam signal. An amplifier is configured to amplify a signal related to the reflected light beam to amplify the output signal of the one or more photodetectors. A processor determines a parameter of the object from the amplified output signal.
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