US Patent Issued to Nikon on June 23 for "Optical system, optical apparatus and method for manufacturing the optical system" (Japanese Inventor)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,611, issued on June 23, was assigned to Nikon Corp. (Tokyo).

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

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical system (OL) has a first lens group (G1), a first focusing lens group (GF1) having a negative refractive power, and a second focusing lens group (GF2) having a positive refractive power, arranged in the stated order from the object side along the optical axis, the first focusing lens group (GF1) and the second focusing lens group (GF2) moving along the optical axis in mutually different trajectories during focusin...