“…Perovskite glasses has been proved to be an excellent color conversion material for laser projection in previous studies. [2] Therefore, the photoelectric parameters, such as refractive index n(ω), dielectric function ε(ω), conductivity σ(ω), reflectivity R(ω), absorption α(ω) and loss function L(ω), of the CsPbBr 3 (Fig. 1 is the crystal structure) are very important to calculate and study.…”