ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,405,455, issued on Sept. 2, was assigned to Canon K.K. (Tokyo).
"Zoom lens and image pickup apparatus" was invented by Masaru Sakamoto (Tochigi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A zoom lens includes, from an object side to an image side, a positive first lens unit configured not to move for zooming, at least three movable lens units configured to move for zooming, and a positive final lens unit closest to the image side in lens units and configured not to move for zooming. In the at least three movable lens units, a lens unit closest to the image side has a positive power, and a lens unit second closest to the image side has a negati...