Solar UVA exposures

Alfio V. Parisi*, Michael G. Kimlin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review


Exposures to UVA radiation (320 - 400 nm) have been linked to increasing the risk of skin cancer, premature skin photoageing and skin wrinkling. The relative proportion of the UVA irradiances in the solar spectrum changes with time of day and season. Material such as window glass found in offices, homes and motor vehicles acts as a barrier to the shorter solar UVB wavelengths (280 - 320 nm) and transmits some of the longer UVA wavelengths (dependent on the type of glass). As a result, the spectrum of the filtered UV transmitted through the material may be substantially different from that of the unfiltered solar UV spectrum. This results in a change in the relative ratio of UVA to UVB irradiances and a consequent change in the biologically damaging UV exposures. For these environments where the UVB wavelengths have been removed and the UVA wavelengths are still present, it is necessary to consider the erythemal irradiances due to these UVA wavelengths only. This paper investigates the times taken for an exposure of l SED (standard erythemal dose) due to the UVA wavelengths.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering: Ultraviolet Ground- and Space-based Measurements, Models, and Effects V
Number of pages8
Publication statusPublished - 10 Sept 2005
Externally publishedYes
Event Optics and Photonics 2005 - San Diego, United States
Duration: 31 Jul 20051 Aug 2005

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


Conference Optics and Photonics 2005
Country/TerritoryUnited States
CitySan Diego
Internet address


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