Atmosphere perception of LED dynamic lighting with color varied in cool and warm hue

Abstract

Take the perspective of cool hue and warm hue, this paper investigated atmosphere perception of LED dynamic colored lighting, as well as physical parameters effects. An experiment was carried out in a LED lighting lab with 8 fully functioned LED cubes, which can produce temporal color-varied lighting. 30 Chinese observers (14 males, 16 females, mean age=25.43, SD= 2.86) evaluated 36 Light conditions (2 lightness levels × 2 chroma levels × 3 hue range types × 3 speed) with 25 word pairs questionnaire. 4 atmosphere dimensions were extracted as coziness, soberness, liveliness and warmness. High speed and high chroma is helpful to create liveliness; low speed and low chroma is more cozy. Warm hue range makes intimate and warm space; cool hue range usually increase soberness. Differences caused by gender and design background were also found.