1. All-MEMS Lidar Using Hybrid Optical Architecture with Digital Micromirror Devices and a 2D-MEMS Mirror.
- Author
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Kang, Eunmo, Choi, Heejoo, Hellman, Brandon, Rodriguez, Joshua, Smith, Braden, Deng, Xianyue, Liu, Parker, Lee, Ted Liang-Tai, Evans, Eric, Hong, Yifan, Guan, Jiafan, Luo, Chuan, and Takashima, Yuzuru
- Subjects
BEAM steering ,MICROMIRROR devices ,LIDAR ,MIRRORS ,OPTICAL communications - Abstract
In a lidar system, replacing moving components with solid-state devices is highly anticipated to make a reliable and compact lidar system, provided that a substantially large beam area with a large angular extent as well as high angular resolution is assured for the lidar transmitter and receiver. A new quasi-solid-state lidar optical architecture employs a transmitter with a two-dimensional MEMS mirror for fine beam steering at a fraction of the degree of the angular resolution and is combined with a digital micromirror device for wide FOV scanning over 37 degree while sustaining a large aperture area of 140 mm squared. In the receiver, a second digital micromirror device is synchronized to the transmitter DMD, which enables a large FOV receiver. An angular resolution of 0.57 ° (H) by 0.23 ° (V) was achieved with 0.588 fps for scanning 1344 points within the field of view. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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