ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,474, issued on Nov. 18.
"Collaborative phase-shift laser ranging device based on differential modulation and demodulation of coarse and precise measuring wavelength and ranging method thereof" was invented by Hongxing Yang (Heilongjiang, China), Jing Li (Heilongjiang, China), Pengcheng Hu (Heilongjiang, China), Xu Xing (Heilongjiang, China) and Jiubin Tan (Heilongjiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a collaborative phase-shift laser ranging device based on differential modulation and demodulation of coarse and precise measuring wavelength and a ranging method thereof. A collaboration terminal ...