Specifying Non-White Light Sources in Outdoor Applications to Reduce Light Pollution. Issue 3 (3rd July 2023)

• Record Type: Journal Article
• Authors: Esposito, Tony; Radetsky, Leora C.
• Is Part Of: Leukos. Volume 19:Issue 3(2023)
• Page Start: 269
• Page End: 293
• Publication Date: 2023-07-03
• Subjects: Amber -- anthropogenic light at night (ALAN) -- artificial light at night -- light pollution -- light emitting diodes -- architectural lighting -- sky glow; Electric lighting -- Periodicals; Electric lighting; Periodicals; 621.32
• DOI: 10.1080/15502724.2022.2121285
• Languages: English
• ISSNs: 1550-2724

Abstract

ABSTRACT: Anthropogenic ("human-generated") light at night (ALAN) from outdoor lighting produces light pollution and as a result causes a range of deleterious responses in humans, plants, and animals. An emerging strategy to combat light pollution, especially sky glow, is to use "amber" LEDs in lieu of phosphor-converted white LEDs with high correlated color temperatures. Importantly, however, there is no standardized terminology or chromaticity designation that is applicable to "amber" LED lighting products for outdoor illumination. In this work, we propose a specification structure for light sources with nonstandard chromaticities to increase the precision of language used in the architectural lighting industry and demonstrate that light sources with well-defined chromaticity ranges outside of the ANSI C78.377–2017 quadrangles may be useful for reducing the portion of relative sky glow related to light source spectral power distribution. We encourage lighting standards development organizations to consider standardizing such a system.