| 摘要 |
PROBLEM TO BE SOLVED: To provide a stable luminescent glass emitting by near infrared ray excitation.SOLUTION: There is a luminescent glass containing, by mass% in terms of oxide, SiOof 50 to 85%, AlOof 1 to 15%, any one or more kind of LiO, NaO or KO of total 7 to 30%, any one or more kind of MgO or CaO of total 0 to 18%, CuO of 0.1 to 1% and SnO of 0.2 to 5% with a molar ratio of SnO and CuO, SnO/CuO of 1 to 10.SELECTED DRAWING: None |
