古建筑彩画照明用光源显色性评价方法研究

摘要

Colored drawing of Chinese classical architecture not only has antiseptic effect on wood components, but also can increase the aesthetic feeling of the building by a variety of bright and colorful patterns. Its rich colors and patterns require a good color rendering property of light sources. However, sometimes the light sources with high color rendering index cannot create a good night scene, largely because of the CRI-Ra using some typical color performance to measure the color rendering property of light sources, which makes the result of evaluation not particularly accurate. Moreover, CRI-Ra in the calculation only considered color fidelity, which is not comprehensive in the evaluation of color rendering ability. Therefore, this paper makes a literature review of the existing evaluation methods of color rendering, and selects some methods applied to the lighting of color drawing. At last, according to the color feature of the standard color sample, the method which can accurately evaluate the color rendering property is selected, which provides a scientific basis for selecting light sources in lighting design.%中国古建筑彩画既能为木质构件带来防腐作用,同时其自身绚丽多彩的图案又增加了建筑物的美感.彩画丰富的色彩和纹样,要求夜景照明用光源的显色性必须好.但高显色指数的光源有时也并不能营造出彩画夜景的良好效果,很大程度上是由于CRI-Ra在计算显色性时采用了代表颜色的色彩表现来衡量光源的显色能力,使评价结果不是特别准确;此外,CRI-Ra在计算时仅考虑了色彩保真,即在显色能力评价上也不全面.为此,本文对现有显色性评价方法进行了梳理,并根据古建筑彩画夜景设计要求,从中选出了适用于彩画照明的评价方法,最后根据彩画标准色样的颜色特征进一步选出了能准确评价彩画照明用光源的方法,为彩画照明设计选用光源提供了科学依据.