[PRJ7/LCT8] Eyewear

[PRJ7/LCT8-4] Ferroelectric Liquid Crystal Dammann Grating: for LiDAR Applications

*Zhengnan YUAN¹, Zhibo SUN¹, Abhishek K SRIVASTAVA¹ (1. The Hong Kong University of Science and Technology (Hong Kong))

Keywords:Ferroelectric liquid crystals, Dammann grating, 3D-imaging, LiDAR

We propose a ferroelectric liquid crystal Dammann grating (FLCDG) based polarization modulated depth-mapping system. Innovatively, FLCDG is used as high-speed shutter in this system. The application of FLCDG enables LiDAR as one-shot capturing system instead of iterative scanning. Moreover, the proposed device shows a fast data-collection time period (50μs) for per 49 points that can be further increased depending on the damman grating, and provide low cost solution to the problem.