Новый критерий качества освещения и его апробация в лабораторных условиях

Abstract

The currently applied unified glare rating (UGR) takes into account discomfort from glare in complex scenes by breaking up arbitrarily shaped sources with non-uniform luminance that differ from small-angle ones into small-angle ones and assuming their luminance distribution to be uniform. Therefore, the UGR may turn to be insufficiently informative in rooms containing materials with high reflectivity, the lighting quality in which should be assessed taking into account the luminance at each point of the scene in all spatial directions. There is a need to broaden the URG content for such scenes and to introduce a new lighting quality criterion based on the physical sense of the discomfort concept from brilliant sources. Since the feeling of discomfort can only be determined experimentally, an experimental setup based on LEDs was constructed at the NRU MPEI Department of Lighting Engineering for studying the luminance at the comfort-discomfort boundary from small-angle sized and arbitrarily shaped sources. A conclusion has been drawn from the results of the accomplished experiments that the developed experimental setup and technique can be used for further investigations of the lighting quality criterion based the spatial-angular distribution of luminance in the observer's field of view