EFFECTS ON DISCOMFORT GLARE OF LUMINANCE DISTRIBUTION WITHIN A WINDOW

The purpose of this study is to identify discomfort glare from large light sources with non-uniform luminance distribution. The effects of the contrast between luminance of the sky and that of the ground within an artificial window on the evaluation of discomfort glare were experimented on. No significant difference in discomfort glare from the artificial window of the same average luminance with different levels of the skyline was found. The results showed that glare from the source whose luminance contrast ranging from 1/2 to 1/20 can be estimated by average luminance of the source.