ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,791, issued on July 22, was assigned to NEWMAX TECHNOLOGY Co. LTD. (Taichung, Taiwan).
"Lens barrel and optical recognition device" was invented by Chen-Chung Wu (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lens barrel defines a central axis and includes: an object-side opening, an object-side end portion, and an image-side opening. The object-side opening and the object-side end portion are both located at one end of the central axis. The object-side end portion surrounds the object-side opening and has an object-side surface, the object-side surface includes an annular groove, a radial cross-section of the annular groove has ...