ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,790, issued on May 19, was assigned to LARGAN PRECISION Co. LTD. (Taichung City, Taiwan).

"Plastic lens element, optical imaging module and electronic device" was invented by Chun-Hua Tsai (Taichung, Taiwan), Ming-Ta Chou (Taichung, Taiwan) and Wei-Hung Weng (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A plastic lens element includes an optical effective region and a peripheral region. The peripheral region is circularly disposed on a periphery of the optical effective region, and the peripheral region includes a protrusive structure, an indented shape and a drafting part. The protrusive structure is disposed on an outer diameter ...