Filter

Precision Optical Filters

An optical filter is an optical component that selectively transmits light in a specific range of wavelengths, namely colors, and absorbs the rest. Generally, an optical filter selectively transmits only long (longpass filter) or short wavelengths (shortpass filter), or blocks both long and short wavelengths through a wavelength band (bandpass filter).


Optical filters are used in cameras, various optical instruments, and color stage illumination, and in astronomy to limit the light transmitted to the spectral band of interest, and are essential in fluorescence applications such as fluorescence microscopy and fluorescence spectroscopy.


ILLUCO produces a wide range of filters ranging from simple color glass filters to narrow bandpass filters with high strength coatings.
Visible Wavelength Spectrum Diagram
R Filter Infra Red Cut/Pass
UV Filter Ultra Violet Cut/Pass
Visible Filter Visible ray Cut/Pass
Band Pass Filter Defined spectrum cut, rest pass
Notch Filter Defined spectrum cut, rest pass
Color Glass Filter Using the material's inherent transmission and absorption characteristics
Polarization Filter Polarized light in a specific state pass, rest cut

 

Technical Specification  Type
Surface Quality 40-20 ~ 0-0
Clear Aperature 95~100%
Coating Specification Customized
Coating Material MgF2, AL2O3, Ti3O5, SiO2, Al, HfO2,Ta2O5, Au, Ag, Cr, Ni, etc