ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,737, issued on July 22, was assigned to Nikon Corp. (Tokyo).
"Zoom optical system, optical apparatus and method for manufacturing the zoom optical system" was invented by Ayumu Makida (Kawaguchi, Japan), Tomoki Ito (Kawasaki, Japan) and Satoshi Miwa (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A zoom optical system (ZL), comprises, in order from an object: a first lens group (G1) having a positive refractive power; a second lens group (G2) having a negative refractive power; a third lens group (G3) having a positive refractive power; a fourth lens group (G4) having a positive refractive power; a fifth lens group (G5); and a sixth ...