US Patent Issued to NIKON on Nov. 11 for "Optical glass, optical element composed of optical glass, optical system interchangeable lens, and optical device" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,759, issued on Nov. 11, was assigned to NIKON Corp. (Tokyo).

"Optical glass, optical element composed of optical glass, optical system interchangeable lens, and optical device" was invented by Kohei Yoshimoto (Kawasaki, Japan), Motoi Ueda (Naka, Japan), Hiroshi Yamamoto (Yamato, Japan) and Tatsunori Kawashima (Sagamihara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical glass includes, in terms of mol % of cations, a total amount of La3+, Y3+, and Gd3+ components falling within a range of from 5% to 65% and a total amount of Zr4+, Hf4+, and Ta5+ components falling within a range of from 5% to 65%, and a relationship expressed in Expre...