The effect of light source color and interior color on the perception of dimming light in office

Abstract

This study is to reveal what determines the perception of dimming light in office. Experiments were conducted in an experimental room with several combination of the color of lamp and wall. The illuminance was decreased randomly while subjects conducted task with PC. Whenever they perceived the change, they reported it. As a result, the perception ratio is relatively higher when the color of lamp and wall is similar, though this tendency was not found when wall color was pale. It was also found that pleasantness of the visual environment before/after the change might influence the perception ratio.