Effect of illuminance level of LED lighting on diurnal variation in human physiological and psychological responses

Abstract

The purpose of this study is to examine the effects of illuminance level of LED lighting on diurnal variation in human physiological and psychological responses. A series of subjective experiments were conducted in a laboratory. There were different illuminance level and color temperature conditions suiting for daily activity. There were no significant differences in diurnal variation in human physiological responses. Subjective symptom of fatigue showed a significant difference in each daily activity. The diurnal variation in glare sensation was confirmed at rest and in calculation task.