Phosphor-Dispersed Glass and Method for Producing Same
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United States of America Patent
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Jun 2, 2016
app pub date -
Jul 2, 2014
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Jul 2, 2014
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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 AlF3, 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.
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