Advancing knowledge and providing standardization to improve the lighted environment

The International Commission on Illumination - also known as the CIE from its French title, the Commission Internationale de l'Eclairage - is devoted to worldwide cooperation and the exchange of information on all matters relating to the science and art of light and lighting, colour and vision, photobiology and image technology.

With strong technical, scientific and cultural foundations, the CIE is an independent, non-profit organization that serves member countries on a voluntary basis. Since its inception in 1913, the CIE has become a professional organization and has been accepted as representing the best authority on the subject and as such is recognized by ISO as an international standardization body.

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Technical Articles

Non-Visual Effects of Light (Education and Training) The definition of light identifies it as the electromagnetic radiation that stimulates vision. However, we now know conclusively that photoreception in the eye leads not only to vision but also to... (View Full Article)
Position Statement on CRI and Colour Quality Metrics (Calibration Instruments, Standards and Reference Sources) CIE Lighting Quality & Energy Efficiency Conference, March 3 to 5, 2016, Melbourne, Australia. Followed by Divisions 2, 4 & 5 Annual Meetings, March 7 to 9, 2016. The Colour Rendering Index (CRI),... (View Full Article)