日光色温及显色性实验研究

Experimental Analysis of Color Temperature and Color Rendering Properties of Daylight

为了解决建筑色彩多从人文审美等定性研究出发、缺乏科学定量研究的问题,找到不同色温的日光对建筑色彩产生影响的函数关系,达到建筑色彩设计更科学化的目的。分析了典型日光及相关理论,并以典型日光D65和D55为标准照明体,对日光色温及其与显色性之间的定量关系进行了实验研究,研究结果表明晴天早晨和傍晚的日光色温变化幅度较大,在日出后和日落前3h之间基本稳定地保持在4300~5300K之间。日光光源与典型日光(CIE标准照明体D)的总色差与两者的色温差之间存在显著的正比例关系,比例系数约为0.01,其函数关系式为ΔE=1.0×10-2×ΔK(3500<K<7500)。

Architectural color has been analyzed from humanistic, aesthetic and other qualitative aspects rather than a scientific quantitative perspective. In order to obtain the function relation that different color temperature of daylights influence architectural color and to make architectural color design more scientific, typical daylight and correlation theories have been analyzed. Meanwhile an experiment research of daylight color temperature and color rendering properties while making typical daylights D6s and D^s as standard illuminants has been carried out. The results indicate that in sunny day the daylight color temperature changes quickly in the morning and evening, and it remains stable from sunrise to 3 hours before sunset （4300K^5300K）. And there is a distinct direct proportion relation between color differences and color temperature differences of daylights, the proportional coefficient is 0.01, and the function relation is ΔE=1.0×10-2×ΔK（3500〈K〈7500）.