| abstract |
A phosphor plate according to the present invention is provided with a plate-like composition body that comprises a base material and a phosphor that is dispersed in the base material. With respect to this phosphor plate, if A455 (%) is the absorptance at 455 nm, A700 (%) is the absorptance at 700 nm and T (mm) is the thickness of the phosphor plate when the light absorption spectrum in the wavelength range of from 300 nm to 700 nm is measured, (A700/A455)/T is from 0.01 to 1.00 (inclusive). |