ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,132, issued on Sept. 1, was assigned to Hesai Technology Co. Ltd. (Shanghai).

"Light cover stain detection method and light cover stain detection system for LiDAR" was invented by Guowei Xiao (Shanghai), Xin Zhao (Shanghai), Qingguo Yu (Shanghai) and Shaoqing Xiang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A detection method for stain on a light cover of a LiDAR, including: transmitting a multi-pulse sequence with pulse coding; receiving an echo; obtaining an echo pulse sequence in the echo corresponding to the multi-pulse sequence; determining whether the light cover of the LiDAR has a stain based on a time of flight (TOF) of the ech...