TWI854616B
Optical filter-type glass contains a P component, a Cu component, and Mo component, is substantially free of F, and includes: in mass % on an oxide basis, 60% to 75% of P2O5; 9% to 16.5% of Al2O3; 4% to 20% of ΣR2O, where R2O is one or more components selected from Li2O, Na2O, K2O, Rb2O, and Cs2O, a...
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