| abstract |
The phosphor plate of the present invention is a phosphor plate comprising a base material and a plate-shaped complex containing a phosphor dispersed in the base material, the main component of the base material is alumina, the phosphor contains an α-sialon phosphor, JIS Z 8781 In the L * a * b * color coordinates measured according to -4, the L * value satisfies 73.5 or more and 85.0 or less, the a * value satisfies 4.4 or more and 8.0 or less, and the b * value satisfies 10.8 or more and 13.0 or less. . |