US Patent Issued to CANON on March 18 for "Optical system and image pickup apparatus having the same" (Japanese Inventor)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,256,135, issued on March 18, was assigned to CANON K.K. (Tokyo).

"Optical system and image pickup apparatus having the same" was invented by Takeo Mori (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 front unit, an aperture stop, and a rear unit having positive refractive power as a whole. The rear unit includes a final lens disposed closest to the image side and having positive refractive power. A number of inequalities relating to the spatial relationship between the lenses and their refractive powers are satisfied."

The patent was filed on March 20, 2023,...