Demonstration of a Mems-Mirror, 3D-Lidar System with Large Aperture and Scanning Angle

摘要

The state of the art of miniaturized LiDAR systems for autonomous-car applications require large mirror surfaces for eye-safe transmission (Tx) beams and long measurement ranges. Our system concept incorporates a MEMS mirror and an optimized micro-optical array for avoidance of shadings in the field of view (FoV) and high light-collection efficiency. This realizes constant angular resolution, high robustness against front lens contamination and long measurement ranges for an eye-safe laser class 1 LiDAR system. In this paper, we demonstrate first real distance measurements and proof by simulations and experiments the behavior of shadings in the FoV regarding the receiving (Rx) signal, due to beam cut-offs at the aperture-stop of the scanner module.