Artwork visualization using a solid-state lighting engine with controlled photochemical safety

Tuzikas, Arūnas; Žukauskas, A.; Vaicekauksas, Rimantas; Petrulis, Andrius; Vitta, P.; Shur, M. S.

doi:10.1364/oe.22.016802

Cited by 16 publications

(13 citation statements)

References 37 publications

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“…Similarly, other researchers optimized four LED channels (red, amber, green, blue) for damage factor, chromaticity, and color quality, while maintaining a constant irradiance (Tuzikas et al 2014). The reference point for the relative damage factor (RDF) is considered as RDF = 1.0 for an incandescent illuminant, and lower values indicate reduced damage.…”

Section: Optimization For Color Quality and Damagementioning

confidence: 99%

“…The reference point for the relative damage factor (RDF) is considered as RDF = 1.0 for an incandescent illuminant, and lower values indicate reduced damage. Optimized test spectra resulted in decreased damage for low-grade paper ranging from RDF = 0.23 to RDF = 0.43 and from RDF = 0.77 to RDF = 0.89 for oil paint on canvas (Tuzikas et al 2014). Color quality results were reported using color rendition metrics, and the results were varied (color rendering index R a = 16 to R a = 96, color quality scale (CQS) Q f = 35 to Q f = 92; Tuzikas et al 2014).…”

Section: Optimization For Color Quality and Damagementioning

confidence: 99%

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Spectral Optimization to Minimize Light Absorbed by Artwork

Durmus

Abdalla

Duis

et al. 2018

LEUKOS

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Light is needed to appreciate artwork, but visible radiation causes damage by photochemical action. Photons trigger photochemical action only when they are absorbed by the object. Damage to sensitive materials can be reduced by optimizing the spectrum of a light source to the reflectance factor of a museum artifact. Absorption minimization approaches can be utilized to quantify and optimize typically conflicting parameters, such as damage due to light absorption, color quality of artwork, and energy consumption. In this project, seven narrowband light emitting diodes (LEDs) are optimized using a multi-objective genetic algorithm to reduce light absorption and energy consumption, while maintaining the color appearance of five paints (blue, green, yellow, orange, red). Results indicate that optimized test spectra can reduce light absorption between 18% and 48%, without causing perceptible color or hue shifts in the paintings. Parallel to absorption, energy consumption is almost halved for all of the paints (between 42% and 48%). Optimizing the light source spectrum can aid in conservation of art collections in museums by reducing damage caused by optical radiation while preserving color fidelity.

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Section: Optimization For Color Quality and Damagementioning

confidence: 99%

Section: Optimization For Color Quality and Damagementioning

confidence: 99%

Spectral Optimization to Minimize Light Absorbed by Artwork

Durmus

Abdalla

Duis

et al. 2018

LEUKOS

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show abstract

“…10, the color rendition engines allow for dynamically finding individual and object-specific preferences to color rendition without knowing indices, scores, and scales of color rendition metrics. Such engines can be easily adjusted to a desired chromaticity and can be supplemented by additional functionalities, such as instantaneous dimming for maintaining constant photochemical damage of the artwork pigments (Tuzikas et al 2014) or for the control of circadian action. These engines can also meet specific visual needs, such as those of the elderly and colordeficient people.…”

Section: Color Rendition Engineeringmentioning

confidence: 99%

Color Rendering Metrics: Status, Methods, and Future Development

Žukauskas¹,

Shur²

2016

Handbook of Advanced Lighting Technology

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Color rendition metrics, which assess light sources in terms of the color quality of illuminated objects, are advancing with the development of lighting technology and with the increasing needs of lighting users. This chapter reviews different metrics of assessing the color quality of light sources. We show that the traditional measures of the color fidelity, such as the standard color rendering index (CRI) and its single-figure-of-merit refinements, fail to correctly assess the color rendition properties of illumination, especially for the light sources having spectral power distributions composed of narrow-band components, such as polychromatic light-emitting diode clusters. These metrics (based on the estimation of color shifts for a small number of test color samples) do not account for the ability of the light sources to increase or decrease the chromatic contrast (color saturating or dulling) and clash with the subjective preferences to the color quality of

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“…Tuzikas et al . 22 have presented a practical approach of using tunable LED clusters for artwork illumination with the control of photochemical safety and good colour quality using existing damage formula suitable for western artwork. However, the optimization of CCT tunable, white light sources for protective effect and colour quality simultaneously with the focus on traditional Chinese paintings has not been explored to date.…”

Section: Introductionmentioning

confidence: 99%

Four-component, white LED with good colour quality and minimum damage to traditional Chinese paintings

Dang

Wang

Liu

et al. 2019

Lighting Research & Technology

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A correlated colour temperature tunable, four-component, LED system suitable for illuminating traditional Chinese paintings painted with inorganic pigments (iop-TCPs) has been designed. This light source can meet the requirements for protective illumination and colour quality in museum illumination. The damage to iop-TCPs caused by the individual 450 nm, 510 nm, 583 nm and 650 nm monochromatic LEDs used to construct the LED system were obtained through a long-term illumination experiment. Then, we calculated the damage resulting from the corresponding four-component white LEDs with various spectral power distributions, the intensities of which were iterated by a brute force algorithm. The constructed spectral power distributions were evaluated by the damage and colour quality formulae. The results showed that the better colour quality spectral power distributions with higher correlated colour temperatures cause less damage to iop-TCPs. The lowest damage spectral power distributions, satisfying colour quality requirements with correlated colour temperatures ranging from 2700 K to 4000 K, were obtained by calculating the corresponding parameters of the formed spectral power distributions and further selection. This paper not only provides a colour temperature tunable, four-component, white LED system suitable for illuminating iop-TCPs but also sets out a methodology that can be used to identify white LEDs suitable for other cultural relics based on damage limitation and visual requirements.

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Artwork visualization using a solid-state lighting engine with controlled photochemical safety

Cited by 16 publications

References 37 publications

Spectral Optimization to Minimize Light Absorbed by Artwork

Spectral Optimization to Minimize Light Absorbed by Artwork

Color Rendering Metrics: Status, Methods, and Future Development

Four-component, white LED with good colour quality and minimum damage to traditional Chinese paintings

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