The mathematical expression of damage law of museum lighting on dyed artworks

Abstract

Dyed artworks are highly sensitive to light and are easily affected by museum lighting, resulting in irreversible permanent color damage such as fading and discoloration. Exposure, light source spectrum and material properties are the three indicators causing damage to artworks. Therefore, it is the basis for effective lighting protection to reveal the quantitative influence of exposure and light source spectrum composition on the damage degree of different pigments and establish a mathematical model that can accurately express the above rules. At present, the color damage calculation model of dyed artworks under three parameters’ coupling action is missing. This research established a visual three-dimensional change surface of the color difference values of 23 pigments varying with the spectral wavelength and exposure through experimental methods. The relative responsivity function ΔEn = fn(λ, Q), where n = 1 ~ 23, was obtained for 23 pigments under the coupling effects of exposure and light source spectra. Furthermore, a mathematical model $$D_{n} = \mathop \smallint \limits_{380}^{780} S\left( \lambda \right) \cdot f_{n} \left( {\lambda ,Q} \right)d\lambda$$ D n = ∫ 380 780 S λ · f n λ , Q d λ calculating the color damage of pigments in the range of visible light was proposed. The proposed model was verified by the experimental method, which realizes the mathematical expression of the damage law of museum lighting on dyed artworks.

Teaching Lighting Design for Cultural Heritage in the Digital and Pandemic Era: Experiencing New and Old Techniques

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“…In the presence of sensitive materials, lighting must be carefully designed and dosed to limit photochemical reactions, radiant heating effects, and growth on biological organisms [42]. The absorption of photons induces photochemical phenomena that manifest as changes of colours or mechanical properties [44,45]. Unfortunately, these changes are irreversible and depend both on the wavelength and the incident radiation amount.…”

Evaluation method for the color preference of lighting traditional Chinese paintings in museum based on light source spectral analysis

“…Therefore, to scientifically evaluate the effect of LEDs with different spectral compositions on the color preference of traditional Chinese paintings, an evaluation method based on SPD, which does not use the traditional indicators, such as CCT, Duv, and SDCM is urgently needed. In a study on illumination damage in traditional Chinese paintings based on the SPD of the light source, some scholars [ [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] ] have developed 10 kinds of narrowband light sources in different wavelengths covering the visible light spectrum using monochromatic LED chips. They then conducted long-period irradiation experiments on cultural relics, utilizing these various narrowband light sources as the experimental light sources.…”

A Versatile Photochromic Dosimeter Enabling Detection of X‐Ray, Ultraviolet, and Visible Photons

“…[4][5][6] However, a series of risks such as skin cancer, photoaging, sleep and mood disorders, reduction in crop yields and damage of dyed artworks can also be induced by excessive exposure. [7][8][9] These risks are wavelengthspecific and can depend on the cumulative dose. To avoid the adverse influence of both under-and over-exposure, light dosimeters enabling an accurate measurement of the cumulative dose of different types of electromagnetic radiation are required.…”