Light + Health, Research
Mapping Biological Functions Of Different Light Wavelengths
David Shiller January 8, 2026
For the legible version of the above image, click here. It’s worth it.
This image was created by Stig Kristiansen, a consultant on light + health in Norway. He painstakingly mapped wavelengths of light to different biological functions. The resulting complexity is the most important takeaway. His LinkedIn post about this mapping can be found here.
Image above: Map of light wavelengths to biological functions. Created by Stig Kristiansen.
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David Shiller is the Publisher of LightNOW, and Senior Business Development Consultant at Capacity Consulting, 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 been co-chair of the 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.
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