DMD-based diffractive FOV expansion for real-time flash lidar with 2D multi-pixel photon counter

Jeff Ching-wen Chan; Chin-I Tang; Xianyue Deng; Yuzuru Takashima

doi:10.1117/12.2635228

30 September 2022 DMD-based diffractive FOV expansion for real-time flash lidar with 2D multi-pixel photon counter

Jeff Ching-wen Chan, Chin-I Tang, Xianyue Deng, Yuzuru Takashima

Proceedings Volume 12231, ODS 2022: Industrial Optical Devices and Systems; 122310F (2022) https://doi.org/10.1117/12.2635228
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

We demonstrated a real-time lidar system that utilizes a Digital Micromirror Device (DMD) as a field of view (FOV) expander and a 2D Multi-Pixel Photon Counter (MPPC) as a lidar sensor. By synchronizing the dynamic transition of DMD micromirrors between on- and off-states with the MPPC and a nanosecond pulse laser, the receiver FOV is diffractively steered to expected direction enabled by timing the delay of micromirrors transition to the laser. The DMD-MPPC lidar can capture up to 7 diffraction orders of high-resolution geospatial data. By applying the laser beam steering technique, this system is able to span over 35 degrees FOV, which is 10 times expansion of FOV compared to the single lidar detector FOV. In this work, as a preliminary demonstration towards diffractive FOV expansion, we presented the high resolution lidar images while DMD is switching between on and off state. Also, we performed distance resolution testing to validate the functionality of DMD-MPPC flash lidar system.

Citation Download Citation

Jeff Ching-wen Chan, Chin-I Tang, Xianyue Deng, and Yuzuru Takashima "DMD-based diffractive FOV expansion for real-time flash lidar with 2D multi-pixel photon counter", Proc. SPIE 12231, ODS 2022: Industrial Optical Devices and Systems, 122310F (30 September 2022); https://doi.org/10.1117/12.2635228

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