| abstract |
【Task】 Provided is a phosphor mixture that realizes a light-emitting device having a phosphor and a light-emitting element that emits light having excellent color rendering properties with little color misregistration due to energization current. [Solution] The emission spectrum is obtained by producing CaAlSiN 3 : Eu as the red phosphor and YAG: Ce as the yellow phosphor. On the other hand, the emission spectrum of the excitation light emitted from the light emitting part is obtained, and from these emission spectra, the correlation of the light emitting device is obtained. The relative mixing ratio of the phosphors having the target color temperature is obtained by simulation, and the phosphors are weighed and mixed based on the relative mixing ratio to obtain a phosphor mixture. [Selection] Figure 1 |