Proposed light sources for illuminating in Xuan paper and silk artwork with organic and inorganic pigments by evaluating color shifts in museum

Abstract

Artworks based on Xuan paper or silk and painted by organic or inorganic pigments are highly responsive to light due to their materials and manufacturing technologies. They belong to the highest level of light responsive exhibits stipulated by International Commission on Illumination (CIE) and are vulnerable to fading and discoloration caused by radiation from light sources. The choice of light sources is the key of protection for artworks. It is indispensible and urgent to choose the lowest damage light sources according to the material characteristics of artworks. In this article, long‐term irradiation of typical light sources on various substrates and pigments was used as experimental method, and CIE DE2000 color difference formula was used as the evaluation index. The laws of the influence of different light sources on the color change of various materials were obtained, and the relative damage coefficients of light sources were calculated. Finally, eight kinds of light sources suitable for illuminating responsive artworks with typical material combinations were proposed. However, there are some limitations in the study, because the ancient Chinese Xuan paper and silk used as experimental objects in the experiment are yellowish. Thus, the models derived in this article are not suitable for choosing reasonable display light sources for other works of art. However, suitable light sources for different materials could be obtained by the calculation method used in this article.

Analysis of photoaging characteristics of Chinese traditional pigments and dyes in different environments based on color difference principle

“…CIE 1976 L * a * b * Uniform color space is widely used in the research of cultural relic aging. In this study, 8 we measure the chromatic information of samples periodically, and then use CIE 1976 L * a * b * uniform color space to obtain the color difference of samples in different aging periods.…”

“…Through analyzing the color difference value, the influence coefficient of various light sources on painting was obtained by them, and then the best light source for Chinese light color painting lighting was determined 6 . Through detailed experiments, Dang Rui and his team explored the light sources suitable for Xuan paper and silk artwork lighting; they also studied the influence of light source band on polychrome 7,8 . By setting up relevant experiments, Soomin Jo et al studied the relationship between different colors of light and Korean cultural relics damage 9 .…”

Design of comfortable light sources based on low damage spectrum of paper relics in the museum

“…The optimal LED spectrum that minimizes damage and meets visual requirements was obtained 17 – 20 However, there is not much research on spectral comfort in their study. Daylight is the full-spectrum light.…”