Optical Filters
Find optical filters by the task they perform: isolate a spectral band, define a wavelength edge, divide spectral paths or reduce intensity. The catalogue separates interference, longpass, shortpass, dichroic, colored-glass and neutral-density families, including hot/cold mirrors and variable attenuation options.
Interference Filters
Longpass Filters
Shortpass Filters
Dichroic Filters
Color Glass Filters
Neutral Density Filters
Hot & Cold Mirrors
Gradient Neutral Density Filters
Choosing Optical Filters
- Define the wavelength region to transmit or reject before choosing the filter construction.
- For attenuation, compare reflective, absorptive and variable neutral-density options; for spectral isolation, start with bandwidth or edge requirements.
- Check the selected family for aperture and operating conditions, then read its spectral information before selecting a model.
Read spectral information with its measurement conditions in the optical-curves guide.