ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,647, issued on Jan. 27, was assigned to CANON K.K. (Tokyo).

"Lens barrel capable of preventing deformation or damage caused by external force and optical apparatus" was invented by Kohei Uemura (Tokyo), Toru Ishimasa (Kanagawa, Japan), Tatsuya Noi (Kanagawa, Japan) and Kota Inoue (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lens barrel includes a lens and a holding member holds the lens. A guide barrel guides the holding member linearly movably in an optical axis direction of the lens. A cam ring is rotatably held about an optical axis of the lens with respect to the guide barrel and surrounds the guide barrel. The cam ring has a first co...