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.
ILUCO produces a wide range of filters ranging from simple color glass filters to narrow bandpass filters with high strength coatings.
|IR Filter||Infra Red Cut/Pass|
|UV Filter||Ultra Violet Cut/Pass|
|Visible Filter||Visible ray Cut/Pass|
|Band Pass Filter||Defined spectrum pass, rest cut|
|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|
|ND Filter (Neutral Density Filter)||Lowers transmission of the defined spectrum|
|Surface Quality||40-20 ~ 0-0|
|Coating Meterial||MgF2, AL2O3, Ti3O5, SiO2, Al, HfO2, Ta2O5, Au, Ag, Cr, Ni, etc|