US Patent Issued to Nikon on July 29 for "Optical system, optical apparatus, and method for manufacturing optical system" (Japanese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,372,741, issued on July 29, was assigned to Nikon Corp. (Tokyo).

"Optical system, optical apparatus, and method for manufacturing optical system" was invented by Fumiaki Ohtake (Tokyo), Satoshi Miwa (Tokyo) and Atsuki Ito (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system used in an optical apparatus is configured to include a first lens group having positive refractive power, a focusing group that moves along an optical axis at focusing, and a rear group, in order from an object side, so that the first lens group includes a first-A lens group disposed on the object side of the largest air space A in the first lens group, and that a...