US Patent Issued to Canon on Oct. 28 for "Optical system and image capturing apparatus including the same" (Japanese Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,431, issued on Oct. 28, was assigned to Canon K.K. (Tokyo).

"Optical system and image capturing apparatus including the same" was invented by Takahiro Saito (Tochigi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system includes a front lens unit with positive refractive power, an intermediate lens unit, and a rear lens unit in order from an object side to an image side. The intermediate lens unit moves to change an interval between the front lens unit and the intermediate lens unit and an interval between the intermediate lens unit and the rear lens unit in focusing from infinity to a close range. The focal length of the front len...