Given the large proportion of time spent by the average person indoors, it is imperative to
have an understanding of the impacts of long-term and immersive exposure to a variety of …

Correlated color temperature (CCT) is a one-dimensional metric that aims to quantify the
perceived visual quality of nominal white light sources. It is often used as a proxy for the …

This tutorial article provides a comprehensive overview of the development and use of
ANSI/IES TM-30-20, an American National Standard method for evaluating light source color …

Colour preference is a critical dimension for describing the colour quality of lighting and
numerous metrics have been proposed. However, due to the variation amongst …

This paper describes a framework and provides a computational tool to characterize the
color quality and biological potential of light that is transmitted through glass and other …

This article explores the best practices for conducting psychophysical experiments that
investigate how colour rendition influences the perception of architectural environments. We …

Twenty-four real spectra were strategically structured to have systematic variation in average
fidelity (IES R f= 65, 75, 85, 95), average gamut (IES R g= 80, 90, 100, 110, 120) and gamut …

In lighting practice, light level is seldom considered when specifying light source color
rendition. Many past studies found that sources that can enhance color saturation within a …

An experiment was conducted to examine colour rendition specification criteria. Twenty-five
participants each evaluated 90 lighting scenes in a room filled with objects. The lighting …

The introduction of new measures of color rendition, especially IES TM-30-15, has stirred
debate within the lighting industry on the relative merits of the tools, as well as the amount of …