ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,661, issued on Jan. 27, was assigned to CANON K.K. (Tokyo).
"Optical system and image pickup apparatus having the same" was invented by Kana Kobayashi (Tochigi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system consists of, in order from an object side to an image side, a lens unit including a plurality of lenses and a final lens having a negative refractive power. A lens surface on the image side of the final lens has an aspherical shape that includes a concave area near an optical axis and an inflection point. A predetermined condition is satisfied."
The patent was filed on Oct. 14, 2022, under Application No. 17/965,898.
*F...