ALEXANDRIA, Va., March 31 -- United States Patent no. 12,591,138, issued on March 31, was assigned to Fuzhou Photop Optics Co. Ltd. (China).

"Optical device for AR glasses" was invented by Tyler You (Fuzhou, China), Fadian Le (Fuzhou, China), Jian Gao (Fuzhou, China), Qiujie Zhang (Fuzhou, China) and Yulin Zhang (Fuzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A beam combining device, enabled to combine a first beam with a second beam of a different spectrum into a combined beam, where the combination may be obtained through a device comprising two antireflective coating, a dichroic filter coating, and a reflective coating arranged on a substrate."

The patent was filed on Feb. 20, 2023, under A...