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US 12,330,984 B2Granted
Glass and optical element
AssigneeHoya Corporation
InventorsKoichi Sato, Yoshitake Tanno, Naomi Matsumoto
Life of this patent
Estimating the term…
Abstract
Provided is oxide glass in which a content of P5+ is 7 to 43 cation %, a content of Nb ions is 10 to 21 cation %, a content of Li+ is 20 cation % or more, a total content of Nb ions and Li+ is 48 to 70 cation %, a content of Bi ions is more than 0 cation % and is equal to or less than 6 cation %, a content of Ba2+ is 5 cation % or less, a content of Zr4+ is 2 cation % or less, a total content of Ti ions and W ions is 5 cation % or less, and a cation ratio of the content of Li+ to a total content of Li+, Na+, and K+[Li+/(Li++Na++K+)] is 0.5 or more.
Claims13
An oxide glass, wherein:
- a content of P5+ is 7 to 43 cation %,
- a content of Nb ions is 10 to 21 cation %,
- a content of Li+ is 30 cation % or more,
- a total content of Nb ions and Li+ is 48 to 70 cation %,
- a content of Bi ions is more than 0 cation % and is equal to or less than 6 cation %,
- a content of Ba2+ is 5 cation % or less,
- a content of Zr4+ is 2 cation % or less,
- a total content of Ti ions and W ions is 5 cation % or less, and
- a cation ratio of the content of Li+ to a total content of Li+, Na+, and K+ [Li+/(Li++Na++K+)] is 0.7 or more.
6 more elements
Dependencies are inferred from the claim text.