ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,717,123, issued on Aug. 25, was assigned to Canon K.K. (Tokyo).
"Zoom lens and image pickup apparatus" was invented by Kazuya Shimomura (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A zoom lens including from object side: a positive first unit; at least one negative unit moving toward image side for zooming from wide to telephoto; and at least two positive units each moving toward object side for the zooming, in which the positive first unit includes a biconcave lens closest to object side, in which an N unit is one of the at least one negative unit and having largest amount of movement during the zooming, and P unit is one of the at le...