Reply To: cumulative LED lighting damage – no UV or IR output, or low?

#131927

While UV is the most damaging part of the spectrum, and the heat (IR) from hot light sources can also cause damage, visible light can cause considerable damage to light-sensitive material. Fading of documents is certainly a major concern. There are some works on paper that are not especially light-sensitive (e.g. where the image is created with carbon-based ink), but in general works on paper should not be placed on extended (or permanent) exhibition.