| abstract |
A phosphor-dispersed glass according to one aspect of the present invention includes phosphor particles and a phosphor encapsulant, wherein the phosphor encapsulant is a fluoride glass material containing 1 to 45 mol % of AlF 3 , 30 to 60 mol % of a sum of a fluoride of Hf and a fluoride of Zr, 20 to 65 mol % of alkaline earth fluorides in total, 2 to 25 mol % in total of at least one fluoride of element selected from the group consisting of Y, La, Gd and Lu and 0 to 20 mol % in total of at least one fluoride of element selected from the group consisting of Na, Li and K. It is feasible in this phosphor-dispersed glass to suppress deactivation of the phosphor particles regardless of the kind of the phosphor. |