With strong technical, scientific and cultural foundations, the CIE is an independent, non-profit organization that serves member countries on a voluntary basis.
Improve the lighted environment
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.
This Technical Report has been prepared by CIE Technical Committee 4-15 of Division 4 “Transportation and Exterior Applications" and has been approved by the Board of Administration and by Division 4 of the Commission Internationale de l'Eclairage.
This report is a revision and update of CIE... more
This Technical Report has been prepared by CIE Technical Committee 1-81 of Division 1 "Vision and Colour”. It reports on the performance of colour-difference formulae based on the results of experiments to evaluate colour differences visually. The report addresses small colour differences of... more
This International Standard defines spectral sensitivity functions, quantities and metrics to describe the ability of optical radiation to stimulate each of the five photoreceptor types that can contribute, via the melanopsin-containing intrinsically-photosensitive retinal ganglion cells (ipRGCs),... more
This Technical Report has been prepared by CIE Technical Committee 1-85 of Division 1 "Colour and Vision” and has been approved by the Board of Administration as well as by Division 1 of the Commission Internationale de l'Eclairage. This publication provides the recommendations of the CIE... more