Lichtgeschützte

Lichtgeschützte is a German adjective used to describe objects, materials, or environments that are protected against light, particularly ultraviolet light, in order to prevent deterioration, fading, or other light-induced changes. The term is commonly found in contexts dealing with storage, packaging, and preservation of light-sensitive items.

In practice, lichtgeschützte solutions rely on barriers or filtering to reduce light exposure. Examples include lichtgeschützte Behälter (light-protected containers) made from opaque or UV-filtering materials, lichtgeschützte Lagerung (light-protected storage) in archives, museums, or laboratories, and lichtgeschützte Verpackung (light-protected packaging) for sensitive products. The concept is especially important for photographs, film negatives and prints, dyes, artworks, pharmaceuticals, cosmetics, and certain chemicals.

Usage and nuance: lichtgeschützt implies protection against light, but the degree of protection can vary. It is distinct from lichtundurchlässig (completely light-tight) and from lichtdurchlässig (light-permeable). In professional settings, specific guidelines or standards may prescribe the required level of light protection for a given material, often described in labeling or institutional procedures rather than a universal measurement.

Related terms include Lichtschutz (the protection against light or a barrier that provides such protection) and light-related concepts like photostability. While not a technical standard by itself, lichtgeschützte practices are a common precaution in conservation, pharmaceutical handling, and the storage of sensitive materials.