Codes + Standards, Light + Health

RP-46 Published: Physiological & Behavioral Effects of Light


IES has published ANSI/IES RP-46-23, Recommended Practice: Supporting the Physiological and Behavioral Effects of Lighting in Interior Daytime Environments. It is designed to be a companion to IES TM-18, translating the basic science of how light affects visual, circadian, neuroendocrine, and neurobehavioral responses in daytime interior environments, such as schools and offices. This recommended practice (RP) is intended for lighting practitioners, designers, architects, members of the educational community, utilities, government, and the general public.


1.0 Introduction and Scope
2.0 Definitions
3.0 Circadian, Neuroendocrine and Neurobehavioral Responses to Light
4.0 Measurement of Light for Physiological Responses
5.0 Lighting to Enhance Circadian Entrainment, Alertness, and Performance In Daytime Environments

More information, including purchasing RP-46-23, can be found here.

author avatar
David Shiller
David Shiller is the Publisher of LightNOW, and President of Lighting Solution Development, a North American consulting firm providing business development services to advanced lighting manufacturers. The ALA awarded David the Pillar of the Industry Award. David has co-chaired ALA’s Engineering Committee since 2010. David established MaxLite’s OEM component sales into a multi-million dollar division. He invented GU24 lamps while leading ENERGY STAR lighting programs for the US EPA. David has been published in leading lighting publications, including LD+A, enLIGHTenment Magazine, LEDs Magazine, and more.


Lightovation – Dallas Market Center
IALD Enlighten Europe
IES 24 – The Lighting Conference
ArchLIGHT Summit
American Lighting Association Annual Conference
Click For More


Colonial Electric – Inside Sales -Remote.