Band-pass filters


We develop and manufacture optical bandpass filters specifically tailored to your requirements. These are used to transmit light in a specified, sharply defined wavelength range and to block transmission outside this passband. Therefore, these filters are specified by specifying passband and blocking band.


Optical bandpass filters usually consist of specially arranged interference layer packets that produce high transmission values in the passband. These dielectric and thus absprption-free interference filters can be customized to meet our customers' exact requirements.


The filter designs can be combined with absorbing materials or other layer systems and colored glasses to produce the desired spectral function. Mostly these are sophisticated filter designs to meet the high requirements in their application.


Optical functions

Application examples

  • Band-pass filters for various laser wavelengths in biomedicine
  • Metrology
  • Medical technology
  • Video projectors
  • Events technology


More about applications