lysblanding

Lysblanding is a term used in lighting design and color science to describe the process of blending emissions from multiple light sources to produce a single, cohesive perceptual color and luminance field across a space. The word derives from the Scandinavian languages, with lys meaning light and blandning meaning blending. In practice, lysblanding involves additive color mixing, where the colours produced by different light sources combine in the viewer's eye to create the desired white balance, tint, and brightness.

Techniques and technologies: Practitioners use multi-channel fixtures (often RGB, RGBW, or CMY+W), tunable white LEDs, and calibrated dimming to control color temperature and chromaticity. Spectral tuning can be achieved with algorithms that balance luminance and color rendering across photopic and scotopic vision. Real-time controls and measurement devices, such as spectrometers and color calculators, inform adjustments.

Applications: In stage lighting, lysblanding enables consistency under changing stage conditions. In photography and film, it helps maintain color fidelity under varying ambient light. In architectural lighting, it supports ambience and functional readability.

Challenges: Metamerism, glare, and color drift are concerns; mixed-light conditions can interact with materials producing unexpected colors. Calibration and standardization are important for reproducibility across spaces and time.

See also: Color science; Additive color mixing; Color temperature; Metamerism; Lighting design.