US Patent Issued to Nikon on Aug. 11 for "Variable magnification optical system, optical equipment, imaging equipment and method for manufacturing variable magnification optical system" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,701, issued on Aug. 11, was assigned to Nikon Corp. (Tokyo).

"Variable magnification optical system, optical equipment, imaging equipment and method for manufacturing variable magnification optical system" was invented by Kosuke Machida (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A variable magnification optical system comprises, in order from an object side, 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 and a fourth lens group G4 having negative refractive power; upon varying a magnification, a distance between the fir...