Spectral radiation could cause color damage to dyed cultural relics, and finding a method to obtain a minimum-damage light source is a key issue to be solved. In this paper, the color change behavior of pigments under exposure was experimentally investigated by irradiating 17 typical inorganic pigments used for dyed cultural relics with 10 different narrow-band LED light sources. Through an analysis of the color difference of the test pigments against the amount of exposure, the responsivity equations of the pigments were obtained and a mathematical model for predicting the color damage degree was proposed. The 10 kinds of narrow-band light were combined to obtain 106 LED by using the exhaustive method. The Ra, R9, and | Duv | value of the above spectra were calculated. Ra≥90, R9≥0, and | Duv | ≤0.0054 were taken as the evaluation basis, and 35,398 spectra that met color rendering requirements were obtained. The established mathematical model was used to calculate the color damage value to find the minimum-damage spectrum, which was then input into a Thouslite LEDCube system for reduction. An experiment was conducted among the minimum-damage LED and 3 randomly selected light sources, and results showed that the minimum-damage LED light source has an obvious illumination protection effect.

中文翻译：

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无机颜料彩绘文物光染保护效果和色彩质量的LED光谱优化获取方法


光谱辐射会对染色文物造成颜色损伤，寻找一种方法获得损伤最小的光源是需要解决的关键问题。本文通过用10种不同的窄带LED光源照射17种典型的文物染色用无机颜料，对曝光下颜料的颜色变化行为进行了实验研究。通过分析测试颜料的色差随曝光量的变化，得出颜料的响应度方程，并提出预测颜色损伤程度的数学模型。采用穷举法将10种窄带光组合得到106个LED。 Ra、R9 和 |杜夫|计算上述光谱的值。 Ra≥90，R9≥0，且|杜夫|以≤0.0054作为评价依据，得到满足显色性要求的光谱35398张。利用建立的数学模型计算颜色损伤值，找到最小损伤光谱，然后输入Thouslite LEDCube系统进行还原。对最小损伤LED与随机选取的3种光源进行实验，结果表明，最小损伤LED光源具有明显的照明保护效果。