ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,904, issued on April 15, was assigned to LARGAN PRECISION Co. LTD. (Taichung, Taiwan).

"Controllable aperture stop, compact camera module and electronic device" was invented by Hao Jan Chen (Taichung, Taiwan) and Yu Chen Lai (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A controllable aperture stop includes a light pass portion, a fixed portion, a driving part and rollable elements. The light pass portion includes movable blades together surrounding a light pass aperture. The fixed portion has shaft structures corresponding to the movable blades. The driving part includes a rotatable element, a magnet and a coil. The rotatable elem...