Term: cut-off filter
https://doi.org/10.1351/goldbook.C01482

Definition:
An optical device which only permits the transmission of radiation of wavelengths that are longer than or shorter than a specified wavelength. Usually, the term refers to devices which transmit radiation of wavelengths longer than the specified wavelength.

Related Terms:
1) transmission (http://doi.org/10.1351/goldbook.T06477).
2) wavelength (http://doi.org/10.1351/goldbook.W06659).
3) filter (<em>of a radiation</em>) (http://doi.org/10.1351/goldbook.F02385).

Source: PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2234 (https://doi.org/10.1351/pac199668122223)

Citation: 'cut-off filter' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.C01482

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