Museum lighting with LEDs: Evaluation of lighting damage to contemporary photographic materials

Luo, H-W; Chou, Ching-Ju; Chen, H-S; Luo, Bin

doi:10.1177/1477153518764538

Cited by 23 publications

(15 citation statements)

References 15 publications

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“…This is consistent with the changing trend of previous experimental conclusions, in which four narrow-band light obtained by filtering and halogen lamp were used to illuminate traditional Chinese paintings drew with organic pigments [22]. Other similar studies also have similar change behaviors, which proved the validity of the damage effect study [23], [24], [25], [26], [27], [28]. According to the color difference curve, which shows a logarithmic function, the curve in Fig.…”

Section: A Spectral Responsivity Function Of Different Pigments Of Dyed Cultural Relicssupporting

confidence: 88%

Method to Obtain LED Spectrum Optimizing Protection Effect and Color Quality for Lighting Dyed Cultural Relics Painted With Inorganic Pigments

Song

Zhang

et al. 2021

IEEE Photonics J.

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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 10 6 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.

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Section: A Spectral Responsivity Function Of Different Pigments Of Dyed Cultural Relicssupporting

confidence: 88%

Method to Obtain LED Spectrum Optimizing Protection Effect and Color Quality for Lighting Dyed Cultural Relics Painted With Inorganic Pigments

Song

Zhang

et al. 2021

IEEE Photonics J.

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“…LEDs are nowadays the first choice when dealing with art-related applications because their spectral characteristics allow the visible illumination of art and heritage works without radiating them with harmful UV or IR light. This was studied by Luo et al [7] for the specific case of photographic material displayed in museums, though the same problems can be found for artworks such as paintings or ceramics. Several authors have studied LED illumination for museums in terms of its color appearance.…”

Section: Introductionmentioning

confidence: 93%

Spectral Image Processing for Museum Lighting Using CIE LED Illuminants

Martínez-Domingo

Melgosa

Okajima

et al. 2019

Sensors

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This work presents a spectral color-imaging procedure for the detailed colorimetric study of real artworks under arbitrary illuminants. The results demonstrate this approach to be a powerful tool for art and heritage professionals when deciding which illumination to use in museums, or which conservation or restoration techniques best maintain the color appearance of the original piece under any illuminant. Spectral imaging technology overcomes the limitations of common area-based point-measurement devices such as spectrophotometers, allowing a local study either pixelwise or by selected areas. To our knowledge, this is the first study available that uses the proposed CIE (Commission Internationale de l’Éclairage) light-emitting diode (LED) illuminants in the context of art and heritage science, comparing them with the three main CIE illuminants A, D50, and D65. For this, the corresponding colors under D65 have been calculated using a chromatic adaptation transform analogous to the one in CIECAM02. For the sample studied, the CIE LED illuminants with the lowest average CIEDE2000 color differences from the standard CIE illuminants are LED-V1 for A and LED-V2 for D50 and D65, with 1.23, 1.07, and 1.57 units, respectively. The work studied is a Moorish epigraphic frieze of plasterwork with a tiled skirting from the Nasrid period (12th–15th centuries) exhibited in the Museum of the Alhambra (Granada, Spain).

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“…Obviously, considering a single curve can not express all the materials in the museum, it is necessary to study the damage of different materials in the museum. Luo obtained the color difference of photographic materials with exposure under different light sources 16 . By using data fitting method, Rui Dang obtained the damage function of traditional Chinese painting pigments with illuminance and irradiation time under halogen lamp 17 .…”

Section: Introductionmentioning

confidence: 99%

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

Dang

Wang

Song

et al. 2021

Sci Rep

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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.

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Museum lighting with LEDs: Evaluation of lighting damage to contemporary photographic materials

Cited by 23 publications

References 15 publications

Method to Obtain LED Spectrum Optimizing Protection Effect and Color Quality for Lighting Dyed Cultural Relics Painted With Inorganic Pigments

Method to Obtain LED Spectrum Optimizing Protection Effect and Color Quality for Lighting Dyed Cultural Relics Painted With Inorganic Pigments

Spectral Image Processing for Museum Lighting Using CIE LED Illuminants

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

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