Colour shift of interior surfaces with advanced glazings

Abstract

The present paper reports the findings from a scale model (scale 1:5) laboratory experiment about the effect of coloured light created by imitated daylight of various colour temperatures passing through different glazing types on colour perception and the tendency of colour shift for interior surfaces. The building glass functions as an optical filter with a specific spectral transmittance. We set up an experiment to improve the method to evaluate the colour shift of interior surfaces based on people perception with the help of a questionnaire and the measurements from SpectraScan PR-655. Twenty-six participants evaluated colour perception impacted by two systematically varied variables: glazing types and CCTs of light. Exploring the effects on the visual experience of the indoor environment (based on the colour perception) was a secondary aim of this study. Results from linear regression are showed that CCT 2700 had an impact on all rooms and CCT 8000 on the blue and red rooms. The results testify that all glazing types separately had a significant impact on the hue perception of the yellow room, the red room and the violet room. On the other hand, it is difficult to find a general rule for nuances perception.