Encyclopedia of Color Science and Technology

Living Edition
| Editors: Ronnier Luo

Non-Visual Lighting Effects and Their Impact on Health and Well-Being

  • Mariana Figueiro
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27851-8_118-4



Biological, non-visual effects of lighting constitute a new field within lighting research and education. In addition to visual effects, light is known to affect other biological rhythms, most notably the circadian system, which generates and regulates a number of rhythms that run with a period close to 24 h. Light/dark patterns incident on the retina are the major synchronizer of circadian rhythms to the 24-h solar day. Lighting characteristics (quantity, spectrum, timing, duration, and distribution) affecting the visual and circadian systems differ. Symptoms of circadian sleep disorders, such as seasonal affective disorder, jet lag, and delayed sleep phase disorder, can be mitigated by timed light exposure.


The neurophysiology and neuroanatomy of the human visual system is largely understood: vision is the result of complex interactions between light sources, objects and surfaces, the eye, and the brain. Lighting...


Circadian Rhythm Light Exposure Core Body Temperature Circadian System Biological Clock 
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The author would like to acknowledge the projects’ sponsors (National Institute on Aging, National Institute of Nursing Research, National Institute on Drug Abuse, National Cancer Institute, and Office of Naval Research). Mark Rea, PhD, of the Lighting Research Center is acknowledged for his technical assistance, and Nicholas Hanford of Rensselaer Polytechnic Institute is acknowledged for his editorial assistance.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Lighting Research CenterTroyUSA