Ljusspecifika

Ljusspecifika is a Swedish term used as an adjective meaning “light-specific” or “pertaining to light.” In technical Swedish texts it describes properties, effects, or criteria that depend on light’s characteristics, such as its spectrum, intensity, direction, or color temperature. The phrase is commonly found in contexts where lighting quality or optical behavior must be tailored to a particular application.

In optics, photonics and lighting design, ljusspecifika properties include spectral power distribution, wavelength-dependent absorption, fluorescence, scattering, and color rendering. For example, a set of ljusspecifika krav (light-specific requirements) might specify a certain spectral content to influence human perception, comfort, or health, or to optimize plant growth in horticultural lighting. In human-centric lighting, considerations about circadian impact or melatonin suppression relate to the spectral characteristics of the light, making them ljusspecifika concerns.

In material science and photography, ljusspecifika beteenden (light-specific behaviors) refer to how materials or image sensors respond to different lighting conditions, including how color rendition or exposure changes with spectrum and intensity. Measurements often distinguish radiometric quantities (radiant power) from photometric quantities (luminous flux, illuminance) and require attention to spectral factors.

Usage notes: the term is primarily used in Swedish-language discourse. In English, it is typically translated as “light-specific,” “spectrally dependent,” or “spectral,” depending on context. See also photometry, spectral power distribution, color temperature, and photobiology.