ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,334, issued on Nov. 4, was assigned to CANON K.K. (Tokyo).
"Lens barrel, lens apparatus and image pickup apparatus" was invented by Yuusuke Hirai (Saitama, Japan) and Akira Yokoyama (Tochigi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lens barrel including: a linear guide member with a linear guide extending along an optical axis formed therein; a cam member with a cam formed therein; and a moving member, holding an optical element, including an engaging member engaging with the linear guide and the cam, and moving along the optical axis by a relative rotation between the linear guide member and the cam member, wherein the engaging member...