Dichroic mirror for separating/synthesizing light with a plurality of wavelengths and optical apparatus and detecting method using the same

摘要

A dichroic mirror of the present invention having a first portion including an H material layer having a high refractive index, and an M material layer having an intermediate refractive index, the H material layer and the M material layer being laminated repeatedly; and a second portion including an H material layer having a high refractive index, and an L material layer having a low refractive index, the H material layer and the L material layer being laminated repeatedly. An optical apparatus and detecting method of the present invention use the above dichroic mirror.