Techniques for FMCW LiDAR system descan compensation

US11977187B2 · kind B2 · utility

Assignee

• Aeva, Inc. · US

Inventors

• Keith Gagne · Santa Clara, US
• Adrian Cort · San Francisco, US
• Oguzhan Avci · Cupertino, US
• Kevin Pollock · Mountain View, US
• Pierre Hicks · San Francisco, US
• Mina Rezk · Haymarket, US
• Behsan Behzadi · Menlo Park, US
• Gautam Prabhakar · Los Altos, US

Key dates

• Filing date: Dec 7, 2022
• Grant date: May 7, 2024
• Expiry date: Dec 7, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S17/58
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A LiDAR system includes an optical subsystem with an optical axis. The optical subsystem includes an optical source to emit an optical beam, a first optical lens to transmit the optical beam, an optical window to reflect a first portion of the optical beam to generate a LO signal, an optical scanner to transmit a second portion of the optical beam to a target to scan the target to generate a target return signal, where the LO signal is disposed to be decentered from the optical axis on a second optical lens in front of a photodetector (PD) to increase a percentage of an overlap of the LO signal and the target return signal on the PD.