Dichroic mirror
It means that when the incident angle is 45 degrees or a large angle, the light source is separated into specific spectra and the light path direction of part of the spectra is changed. Commonly used in sensor systems such as microplate readers, fluorescence microscope systems, projection light engine systems, laser lights, optical instrument beam splitters, and video glasses. It is an optical component that optical designers are keen to pursue. It can effectively reduce the device structure and realize the multifunctional optical path. Its characteristic is that the light of a certain wavelength is almost completely transmitted, while the light of other wavelengths is almost completely reflected.