US Patent Issued to NIKON on Feb. 25 for "Optical glass, and optical element, cemented lens, optical system, interchangeable lens for camera and optical device using same" (Japanese Inventor)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,234,183, issued on Feb. 25, was assigned to NIKON Corp. (Tokyo).

"Optical glass, and optical element, cemented lens, optical system, interchangeable lens for camera and optical device using same" was invented by Tetsuya Koide (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical glass contains: a P2O5 component of 30 to 60 mass % (exclusive of 30); an Al2O3 component of 2 to 10 mass % (exclusive of 2); a TiO2 component of 10 to 36 mass % (exclusive of 36); an Nb2O5 component of 0 to 5 mass %; a Ta2O5 component of 0 to 15 mass %; a Bi2O3 component of 0 to 5 mass % (exclusive of 5); and an Sb2O3 component of 0 to 1 mass %; and a BaO c...