ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,620, issued on Dec. 16, was assigned to CANON K.K. (Tokyo).
"Drive apparatus, optical system, and image pickup apparatus" was invented by Yuusuke Hirai (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a drive apparatus to be mounted to a lens apparatus including an operation ring, the drive apparatus including: a drive gear configured to rotate the operation ring; a motor configured to drive the drive gear; a partition wall member arranged between the drive gear and the motor; and a base member configured to accommodate the drive gear, the motor, and the partition wall member. The base member is provided with an opening por...