US Patent Issued to Nikon on March 17 for "Optical system, optical apparatus and method for manufacturing the optical system" (Japanese Inventor)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,562, issued on March 17, was assigned to Nikon Corp. (Tokyo).

"Optical system, optical apparatus and method for manufacturing the optical system" was invented by Fumiaki Ohtake (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system comprising a plurality of lens groups arranged on an optical axis and comprising a leading lens group, a first focal lens group, and a second focal lens group. The leading lens group is arranged further on the object side than the first focal lens group and the second focal lens group is arranged further on the image side than the first focal lens group. The first focal lens group has positive refractive...