Features
Thin dielectric films with different refractive indices are coated in multiple layers, and light interference is used to allow the selection of transmission or reflection of light from a light source at the desired wavelengths.
The number of layers of thin dielectric film coated can be from a few to several hundred, which allows various characteristics to be realized.
The shape of the substrate to be coated can be anything from flat to a parabolic mirror.
Applications
It can be applied in various fields such as lamp reflectors, DM for fluorescence analysis, Raman spectrometers and laser processing machines.
Example characteristics
This is a short-pass filter-type dichroic filter.
It is characterized by a wide transmission band and inhibition band.
This is a long-pass filter-type dichroic filter.
It is a band-pass filter-type filter that combines a long-pass filter and a short-pass filter.