Predict utilization factors within shadow under Task Ambient Lighting

Affect of reflectance of room surfaces

Abstract

We applied lighting design to a working plane within shadow under Task Ambient Lighting, and paid attention to utilization factors with the lumen method. In this paper, we examined Utilization-factor ratio within shadow, which is correction coefficient to obtain utilization factors within shadow under Task Ambient Lighting, to reflectance of room surfaces.
As a result, it is clear that floor reflectance is affected to utilization-factor ratio.