ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,601, issued on Dec. 23, was assigned to CANON K.K. (Tokyo).
"Lens barrel, lens apparatus and image pickup apparatus" was invented by Tadanori Okada (Tochigi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lens barrel including: a base lens barrel; and a lens holding frame configured to hold a lens and be movably held in an optical axis direction relative to the base lens barrel, in which the base lens barrel has a first contact surface, and the lens holding frame has a second contact surface, in which the first contact surface and the second contact surface abut on each other in an image pickup state and separate from each other in the optic...