Light has always been an important part of human nature and development process. The on-going studies of light having an impact on human bodies are discovering astonishing facts. These facts show that the light has an effect on human bodies and can help reduce diseases and improve health. It is proven that the skylight can help substantially in this process, and our client decided to achieve a similar effect with the use of an artificial light. The development of such light involved a lot of a background investigation on what prospect of the light has the biggest effect on the human body. A nursing facility for elderly people was the first project where we installed such lights and the results are showing evidence of the light impact on human hormones. 1. Wurtman Richard J. The Effects of Light on the Human Body. MIT. 1971.
2. Aging and Vision, Elsevier, 2010.
3. Brainard, Person, Czeisler, Foster, Peirson, Provencia et al. Measuring and Using Light in the Melanopsin Age, 2013.
4. Czeisler C. Sleep and Circadian Rhythms in Humans. Harvard Medical School, 2007.
5. Wetterberg L. Light and Biological Rhythms in Man. Pergamon Press,1992.
6. Lockley, Brainard, Czeisler, High Sensitivity of the Human Circadian Melatonin Rhythm to Resetting by Short Wavelength Light, Endocrine Society, 2003.
7. Lars-Olof Bjorn. Photobiology: The science of light and life. 3rd edition, ISBN-13:978-1493914678, University of Lund.
8. Figuero et al. Spectral sensitivity of circadian system. LRC, 2007.
9. Brainard G. Why is Blue Light before Bedtime Bad for Sleep? Thomas Jefferson University, A M Chang Harvard University, 2015
10. CIE227:2017, Lighting for Elderly people.

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• circadian rhythm
• luminaire development
• spectrum analysis
• project measurements