luminancija

Luminancija is a conceptual measure used in lighting, display technology, and visual design to describe the perceptual quality of luminous energy across a surface or field. It integrates brightness, color distribution, spatial uniformity, and temporal modulation into a single framework for evaluating how observers perceive light in complex environments.

The term blends luminance with a Slavic suffix and is used primarily in European design discourse to discuss light experience beyond conventional luminance values.

In practice, luminancija is computed from imaging or spectroradiometric data and reported as a dimensionless index or relative unit. Assessments typically consider luminance levels, spectral balance (chromaticity), spatial distribution (uniformity, glare indices), and temporal aspects such as flicker, often with weighted scales reflecting task visibility and viewer comfort.

Luminancija emerged in early 21st-century design literature as digital displays and HDR lighting became widespread. It remains informal and not standardized across industries; different groups may define its components and weights differently.

The concept informs interior lighting planning, cinema and television production, and virtual reality visualization, guiding choices about brightness, color rendering, and glare control. It relates to luminance, brightness, color temperature, color rendering index, and perceptual lighting metrics.