ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,116, issued on June 24, was assigned to MLOptic Corp. (Redmond, Wash.).

"Non-contact optical axis and pupil center detection apparatus" was invented by Wei Zhou (Sammamish, Wash.), Dong Liu (Nanjing, China) and Michael Zhang (Los Altos, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for indicating a misalignment of an optical axis of a lens system including a lens, a front end and a rear end, the lens having a front surface and a rear surface, the apparatus including a light source, a first mirror, a first beam splitter, and an image plane, wherein a laser beam of the light source is configured to be directed at the first beam sp...