Coated filter
The coated filter is coated on the substrate
To realize the characteristics of transmitting a certain wavelength or wave band
Made by the principle of film interference
By changing the optical parameters such as film structure and number of layers
Various spectral characteristics can be obtained
Used to control, adjust, and change light waves
Transmission, reflection, absorption, polarization or phase state
The coated filter has a wide range of applications
With the deepening of optical research in all aspects
It is widely used in organic chemistry
Polymers, biology, surface and film
Coating filter according to the film material
It is divided into hard film filter and soft film filter
Hard film filter refers not only to film hardness
More importantly, its laser damage threshold is high
So it is widely used in laser systems
Soft membrane filter is mainly used for biochemical analyzer
The coated filter can be divided into:
Narrow band interference filter, multi band pass filter, Short wave pass filter, long wave pass filter, band stop filter
