Design of LIDAR wide field of view receiver based on MEMS micro-mirror and high sensitivity APD

Xichen Wang; Pallab K. Choudhury; Hengheng Liang; Yuhang Wang; Ligong Chen

doi:10.1117/12.2590734

28 February 2021 Design of LIDAR wide field of view receiver based on MEMS micro-mirror and high sensitivity APD

Xichen Wang, Pallab K. Choudhury, Hengheng Liang, Yuhang Wang, Ligong Chen

Proceedings Volume 11781, 4th Optics Young Scientist Summit (OYSS 2020); 117811U (2021) https://doi.org/10.1117/12.2590734
Event: Optics Frontier: Optics Young Scientist Summit, 2020, Ningbo, China

Abstract

Avalanche photo-diode (APD) is often used as the core photo-detector in the receiving end of 3D imaging LIDAR. As the photo-sensitive area of the highly sensitive APD is limited, the receiving field of the optical receiver is limited. Therefore, it is necessary to expand the receiving angle and make the spot size smaller than the photo-sensitive area of the APD used. After deducing the relation between the deflection angle and the receiving field angle of the micro electro-mechanical system (MEMS) micro-mirror, an improved three-piece lens and a synchronous optical receiving method based on the MEMS micro-mirror are proposed to expand the receiving field of view from 5.7" x 5.7" to 36"x 36". On this basis, the front and rear lens combination of MEMS lens is simulated with ZEMAX software, and the light reflected by the MEMS micro-mirror is simulated and received. The spot size obtained is suitable for the APD photo-sensitive surface used.

Citation Download Citation

Xichen Wang, Pallab K. Choudhury, Hengheng Liang, Yuhang Wang, and Ligong Chen "Design of LIDAR wide field of view receiver based on MEMS micro-mirror and high sensitivity APD", Proc. SPIE 11781, 4th Optics Young Scientist Summit (OYSS 2020), 117811U (28 February 2021); https://doi.org/10.1117/12.2590734

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