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PHOTOAGING EFFECTS ON SPECTRAL TRANSMITTANCE OF PLASTIC FILTERS
Author(s) -
Miller Sharon A.,
James Robert H.,
Sykes Stephen M.,
Beer Janusz Z.
Publication year - 1992
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1992.tb04286.x
Subject(s) - transmittance , ultraviolet , radiation , photoaging , materials science , infrared , optoelectronics , optics , action spectrum , wavelength , electromagnetic spectrum , ultraviolet radiation , visible spectrum , chemistry , physics , photochemistry , dermatology , medicine , radiochemistry
— We examined the effects of ultraviolet (UV) radiation in combination with high levels of infrared (IR) radiation on the spectral transmittance of plastic filters. The biological action spectrum for damage to the human eye and skin changes dramatically in the 300–400 nm wavelength range. Cut‐off filters used in this region to shape the spectrum of exposure sources are thus critical to the design of experiments which use broadband light sources. The changes in transmittance of three types of plastic filters were observed over an exposure period of 1000 h. One set of three filters was exposed mainly to UV radiation, while the other set was exposed to UV radiation plus IR radiation. Filters exposed to both UV and IR radiation showed spectral changes in their transmittance, while the filters exposed to UV only showed no measurable changes.