Narrow frequency-range optical filters for filtering out light of a specific wavelength from a spectrum featuring multiple wavelengths or for making a nearly mono-chromatic light source from a continuous spectrum.
Diameter: 40 mm
Thickness: 3 mm
Precision: 3 nm
Band width (full width half maximum): 10 nm
Transmission: > 60 %
Parasitical transmission: < 1 %
Wavelength: 436 nm
Filtered spectral lines: Blue mercury line