| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical conversion member which includes glass and an inorganic fluorescent material capable of converting excitation light of a light source, and has an improved light extraction efficiency. ! SOLUTION: An optical conversion member of the invention comprises an inorganic fluorescent material and glass. The glass has a refraction index nd of 1.7-2.8. The optical conversion member has a surface roughness Ra of 0.75 μm or larger as to one or more faces thereof. ! COPYRIGHT: (C)2014,JPO&INPIT |
