Effect of local background luminance on discomfort glare

Wonwoo Kim, Yasuko Koga

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


The objective of this research is to propose a practical method of determining the background luminance in the evaluation of discomfort glare. Two experiments were conducted, a visual sensitivity test and a glare sensitivity test. The results show that the luminance of threshold and the luminance of discomfort glare are mainly determined by the luminance of the immediate background of the source, rather than by the average background luminance, which has previously been suggested by unified glare rating and visual comfort probability method. Consequently, when the background contains areas of differing luminance, the background luminance of a glare source should be determined by the local background luminance affecting the local adaptation.

Original languageEnglish
Pages (from-to)1435-1442
Number of pages8
JournalBuilding and Environment
Issue number12
Publication statusPublished - Dec 2004

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Building and Construction


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