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US 12,319,616 B2Granted
Optical glass, optical element including optical glass, and optical apparatus
AssigneesThe University of Tokyo, Nikon Corporation
InventorsHiroyuki Inoue, Atsunobu Masuno, Kohei Yoshimoto, Motoi Ueda, Hiroshi Yamamoto, Tatsunori Kawashima
Life of this patent
Estimating the term…
Abstract
Provided is optical glass containing, in terms of mol % of cations: 10 to 60% of a La3+ component; more than 0% and up to 75% of a Ga3+ component; and 5 to 75% of a Nb5+ component, in which a total amount of the La3+ component, Ga3+ component, and Nb5+ component is 60 to 100%.
Claims22
Optical glass comprising:
- 10 mol % to 60 mol % of a La3+ in terms of mol % of cations;
- 10 mol % or more and up to 75 mol % of a Ga3+ in terms of mol % of cations;
- and
- at least one selected from a group consisting of Nb5+, Ti4+, and Ta5+.
1 more element
Dependencies are inferred from the claim text.