US Patent Issued to LARGAN PRECISION on May 20 for "Optical system and head-mounted device" (Taiwanese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,402, issued on May 20, was assigned to LARGAN PRECISION Co. LTD. (Taichung, Taiwan).

"Optical system and head-mounted device" was invented by Kuan-Ming Chen (Taichung, Taiwan), Yu Jie Hong (Taichung, Taiwan) and Fuh-Shyang Yang (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes an image surface, an aperture stop, a first and a second quarter-wave plate, a partial reflector, a reflective polarizer, a first and a second optical lens element. The image surface and the aperture stop are respectively at a front side and a rear side of the optical system. The first quarter-wave plate is between the image surface an...