ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,988, issued on Feb. 10, was assigned to SHENZHEN NADE OPTICAL Co. LTD. (Shenzhen, China).
"Optical eyepiece system capable of superimposing optical paths and head-mounted display device" was invented by Jianfei Guo (Guangdong, China), Hongpeng Cao (Guangdong, China) and Huajun Peng (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical eyepiece system capable of superimposing optical paths and a head-mounted display device. The optical eyepiece system comprises an image surface (103), an auxiliary optical path (T), a spectroscope (101), and a main optical path (A) which are sequentially connected; an optical axis of the image su...