US Patent Issued to Canon on Sept. 1 for "Lens barrel unit" (Japanese Inventor)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,328, issued on Sept. 1, was assigned to Canon K.K. (Tokyo).

"Lens barrel unit" was invented by Tomoya Onaka (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lens barrel unit includes a lens unit including at least one lens, an optical-filter holding member, and a drive member. The optical-filter holding member holds an optical filter and is insertable into and removable from a light path of the at least one lens. The drive member inserts or removes the optical-filter holding member into or from the light path. The drive member further engages with the optical-filter holding member and has an opening penetrating in a direction of an ...