Bandpass filters transmit a certain wavelength range (pass band) and block all other parts of the spectrum (cut-off bands).
Broadband filters allow wide wavelength ranges of incident light to pass through; in selected regions of the spectrum, these filters block the light.
Multiband pass filters transmit multiple defined wavelength ranges and block all other parts of the spectrum.
Narrow band filters transmit light source signals in very narrow bands and minimize interference signals.
With bandwidths down to 0.1 nm...
