US Patent Issued to CANON on June 30 for "Optical system and image pickup apparatus" (Japanese Inventor)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,702, issued on June 30, was assigned to CANON K.K. (Tokyo).

"Optical system and image pickup apparatus" was invented by Shunji Iwamoto (Tochigi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes a plurality of lens units. The lens units consisting of, in order from an object side to an image side, a first lens unit, a second lens unit having positive refractive power, a third lens unit, a fourth lens unit having positive refractive power, and a fifth lens unit. During focusing, the first lens unit, the third lens unit, and the fifth lens unit are fixed, and the second lens unit and the fourth lens unit move. The second ...