不同光谱LED光源辐照对染色丝绸文物的表面色差变化影响研究

Study on the Effect of Different Spectral LED Light Sources Irradiation on the Surface Color Difference of Dyed Silk Relics

LED光源光谱只含有可见光成分,相比传统光源能够减少光照对文物的损伤,是目前博物馆展陈照明光源最佳产品。但对于一些光敏文物,长期可见光辐照同样会对其产生不可逆的影响。文章以染色丝绸这一类典型光敏文物为研究对象,通过制作不同颜色的常见植物染料染色丝绸样品,设计模拟照明展览实验系统,利用不同光谱LED光源对样品进行高强度连续光照并测量样品表面色彩属性,计算样品的色差变化以分析不同光谱LED光源长期光照对丝绸文物的影响。结果表明,单色光对染色丝绸老化的影响随波长递增而减弱,高色温对文物的影响强于低色温,不同光谱的LED对黄檗和槐米的老化影响均最大。本研究对更合理地设计丝绸类博物馆LED光源及改善未来博物馆照明环境均有重要指导意义。

The spectrum of LED light source contains only visible light components.Compared with traditional light source,LED light source can reduce the damage caused by light to cultural relics,so it is the best product of museum display lighting source at present.But for some Guang Min cultural relics,long-term visible light irradiation will also have irreversible effects on them.In this paper,plant dyestuff dyeing silk samples,which are the typical photo sensitive culture relics,are taken as subject investigated.by making samples of common plant dyestuffs of different colors and designing a simulated lighting exhibition system,The experiment of high intensity continuous illumination on samples with different spectral LED light sources was carried,and the surface color properties of the samples was measured periodically.The change of color difference of the samples was calculated to analyze the influence of the long term illumination of different spectra of LED on silk relics.The results showed that the influence of monochromatic light on the aging of dyed silk was increased when the wavelength decreased;the influence of high color temperature on cultural relics was stronger than that of low color temperature,and the effects of LED of different spectra on the aging of Amur corktree and Sophora japonica were the greatest.This study is of great significance for the more rational design of museum lighting application of LED light source and the future improvement of museum lighting environment.