US Patent Issued to Nikon on Feb. 11 for "Zoom lens, optical apparatus and method for manufacturing the zoom lens" (Japanese Inventor)

ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,222,482, issued on Feb. 11, was assigned to Nikon Corp. (Tokyo).

"Zoom lens, optical apparatus and method for manufacturing the zoom lens" was invented by Saburo Masugi (Kawasaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A zoom lens, comprises: in order from an object, a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; a third lens group (G3) having positive refractive power; a fourth lens group (G4) having negative refractive power; and a fifth lens group (G5) having positive refractive power, wherein, upon zooming from a wide-angle end state to a telephoto end state, a dista...