Söllner/Bodmannのグレア輝度の妥当性

Abstract

The CIE glare safeguard system is based on a series of experiments by Söllner/Bodmann. In their experiments, a great variety of lighting conditions were presented to many observers, using one-third scale model rooms. The observers were asked to evaluate the degree of discomfort glare under each condition. In these experiments, söllner/Bodmann assumed that the evaluation of the discomfort glare corresponds to the luminance of the central unit of all luminaires seen by the observer. This luminance is taken as the glare luminance.But it can be logically assumed that discom ort glare is influenced not only by glare luminance but also by other luminaires' luminance. Therefore, to investigate the validity of the glare luminance proposed by Söllner, /Bodmann, a series of experiment were conducted.In the experiments, six lighting conditions, in which glare luminances were constant, were presented to observers. Each observer was asked to compare the degrees of discomfort glare of those lighting conditions and to say whether the degrees of their discomfort glare were constant or not.From the result, it was found that the degrees of discomfort glare under those lighting conditions were not constant, even if those glare luminance were constant. Furthermore, it was found that the value of glare luminance does not always correspond to glare sensation of the room.