ALEXANDRIA, Va., June 19 -- United States Patent no. 12,332,041, issued on June 17, was assigned to BEIJING U-PRECISION TECH Co. LTD. (Beijing) and Beijing United Victory Precision Technology Co. Ltd. (Beijing).

"Heterodyne fiber interferometer displacement measuring system and method" was invented by Guohua Sun (Beijing), Zhaokui Cheng (Beijing) and Shengli Guo (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heterodyne fiber interferometer displacement measuring system, including a laser light source assembly for simultaneously emitting measuring light and reference light; a first photoelectric detector, a first fiber coupler, a fiber ferrule, a plano-convex lens, a first polarizing beam splitting...