A @S05837@ which has one or more spectral filters for isolating one or more spectral bands.
Source: PAC, 1995,
67, 1725. (
Nomenclature, symbols, units and their usage in spectrochemical analysis-IX. Instrumentation for the spectral dispersion and isolation of optical radiation (IUPAC Recommendations 1995)) on page 1729 [
Terms] [
Paper]