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US 2026/0070836 A1Published application
Fluorophosphate glass, near-infrared cut filter, and optical device
AssigneeAGC Inc.
InventorsKanako OHGUCHI, Takahiro SAKAGAMI, Masari WATANABE
Life of this patent
Estimating the term…
Abstract
A fluorophosphate glass essentially contains each component of P, Al, K, Cu, F, and R, where R is one or more selected from Li, Na, Rb, and Cs. A content of Al3+ is 2% to 20% in terms of mass %, and an expected value of an ionic radius of an alkali metal component composed of K and R is 80 pm to less than 133 pm.
Claims12
A fluorophosphate glass essentially comprising each component of P, Al, K, Cu, F, and R, where R is one or more selected from Li, Na, Rb, and Cs,
- wherein a content of Al3:
- is 2% to 20% in terms of mass %, and
- an expected value of an ionic radius of an alkali metal component composed of K and R is 80 pm to less than 133 pm.
Dependencies are inferred from the claim text.