Discomfort glare indices: a comparative study

From the luminance distribution measured with a stereoluminancemeter we have studied the variation in the principal indices of discomfort glare while considering the orientation of the line of vision of the observer and the limiting luminance of the glare source. This method provides the ideal orientation for the observer in a lighted environment, minimizes the detrimental effects of glare, and determines the reliability of the indices calculated for discomfort glare.