本研究旨在通过主观实验阐明彩色照明的生理和心理效应。在本文中，我们首先比较了不同照度和色光的心理效应，并确认了灯光颜色对心理应激的主要影响。在单色灯光下，绿灯没有压力，红灯有压力。在由两种单色光组成的混合光中，黄光往往没有压力。我们还从辐照度的角度考察了心理应激的可加性。 结果表明，在眼睛前方53 lx的条件下，蓝色、红色及其混合光品红色之间的可加性可以假设，然而，其他混合色光的可加性需要在未来用更多的实验数据进行研究。

The purpose of this study is to clarify the physiological and psychological effects of chromatic lighting through the subjective experiments. In this paper, we first compared the psychological effects of various illuminance and chromatic lights and confirmed the main effect of light colour on psychological stress. In the monochromatic lights, the green lights were stressless and the red lights were stressful. Among the mixed lights made of two kinds of monochromatic lights, the yellow lights tended to be stressless. We also examined the additivity of psychological stress from the viewpoint of irradiance. The result shows that the additivity could be assumed among blue, red, and their mixed light magenta at the conditions of 53 lx in front of the eyes, however, the additivity of other mixed colour lights needs to be investigated in the future with more experimental data.