Optical filters are used to select the desired spectrum of a light beam. This can be necessary for different conditions. Bandpass filters are frequently used to clean up the spectrum after a beam source or before a detector. Bandpass, short-pass, long-pass, band-stop, and notch filters or beam splitters are distinguished according to their design.
You should know that about the optical filters from Semrock.
Interactive calculation of your optical system
The VersaChrome Tunable Bandpass Filter offer wavelength tunability over a very wide range of wavelengths by adjusting the angle of incidence with essentially no change in spectral performance.
Part number: SEM-FF01-1072/14-25Guaranteed Minimum Bandwidth [nm]: 14
Part number: SEM-FF01-1538/82-25Guaranteed Minimum Bandwidth [nm]: 82
Part number: SEM-FF01-257/12-25Guaranteed Minimum Bandwidth [nm]: 12
Part number: SEM-FF01-260/16-25Guaranteed Minimum Bandwidth [nm]: 16
Part number: SEM-FF01-280/10-25Guaranteed Minimum Bandwidth [nm]: 10
Part number: SEM-FF01-280/20-21.8-DGuaranteed Minimum Bandwidth [nm]: 20
Part number: SEM-FF01-280/20-25Guaranteed Minimum Bandwidth [nm]: 20
Part number: SEM-FF01-285/14-25Guaranteed Minimum Bandwidth [nm]: 14
Part number: SEM-FF01-292/27-25Guaranteed Minimum Bandwidth [nm]: 27