The Influence of Spectral Composition on Discomfort Glare for Large-Size Sources

The negative subjective reaction to light glare is generally referred to as the discomfort glare effect. The luminances and geometrical conditions that increase or decrease the level of subjective response have been studied extensively, and various formulae have been generated as guidelines for reco...

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Bibliographic Details
Published in:Journal of the Illuminating Engineering Society 1996, Vol.25 (1), p.34-41
Main Authors: Berman, S.M., Bullimore, M.A., Bailey, I.L., Jacobs, R.J.
Format: Article
Language:English
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Summary:The negative subjective reaction to light glare is generally referred to as the discomfort glare effect. The luminances and geometrical conditions that increase or decrease the level of subjective response have been studied extensively, and various formulae have been generated as guidelines for recommended lighting practice in both interior and exterior conditions. This paper uses both a variant of the traditional subjective scaling methodology and the electromyographical methodology to determine an objective correlate to the reported discomfort glare. Results for a wide range of luminaries show that the scotopically enhanced source produces less discomfort for both subjective and objective measures when compared to the scotopically deficient source.
ISSN:0099-4480
2376-8487
DOI:10.1080/00994480.1996.10748131