Display of art is a challenging field for lighting designers. In museums not only general lighting requirements should be fulfilled, but also many special issues should be addressed. Such special issue is to present the intention of the artist, to save the artwork from damage and help the visitor to understand the artwork. Energy efficiency plays still an important role, but becomes a secondary aspect. According to the state of art in lighting research, none of the existing light sources is optimal for all these purposes. In this paper not only theoretical but also practical issues are investigated: Our research laboratory is involved in an EU flagship project entitled LED4ART, which has the aim to reconstruct the lighting system in the Sistine Chapel located in Vatican City. Beside theoretical issues, latest results of this project will be presented.
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