Abstract
The purpose of this study is to identify acceptable luminance range of translucent thermal insulation walls, in order to decide optical transmittance of the walls, especially. Two series of subjective experiments with actual translucent thermal insulation walls were carried out in a full-scale building. The first experiment showed the relationship between the luminance of the walls and discomfort glare evaluation, GSV, while the second experiment showed the relationship between the luminance of the walls and brightness of the walls. It was found that the suitable brightness was give by the luminance ranging from 300 to 3000 [cd/m2], that was influenced by the plan of the room and the size of the walls and the windows.
