Bandpass filters transmit light only within a defined spectral band ranging from less than one to many nanometers wide.

Bandpass filters transmit light only within a defined spectral band ranging from less than one to many nanometers wide. They are used in a wide variety of applications where spectral isolation is required. Bandpass filters are preferable to monochromators because of their higher transmission and better signal-to-noise. Different in specification

Standard bandpass filter

Filter and pass band coating

laser optical coating filter

bandpass material spectral

For coating and the filter.filter in different specifications