Latest Publications

LED modules and light engines represent a wide range of very different products with unique physical properties. Thus, they can neither be treated as single LED packages (where measurements refer to a specific junction temperature of a single LED or the average of a single die, multiple-junction... more
  For download: CIE Position Statement on Non-Visual Effects of Light - Recommending Proper Light at the Proper Time, 2nd Edition, October 2019   October 3, 2019   Background Light is defined as any electromagnetic radiation that can create a visual sensation by directly stimulating the retinal... more
The purpose of this publication is to provide guidance about the objectives and underlying principles relating to the lighting aspects of the urban nightscape. It deals with the visual, organizational, environmental, and technical elements of these aspects of urban planning. This guide identifies... more
Many measurement instruments have technical specifications and datasheets that say, for example, “Accuracy: 4 %”. This is an inappropriate use of the term “accuracy” because an “accuracy” is not a quantity and cannot be assigned a value. This document describes how to use the term “accuracy”... more

Latest News and Events

CIE NC Australia Inc. is proud to announce that their Lighting Research Conference 2020 will be held on...
New Partnership Agreement between the CIE and the ISO Signed In December 1986 the International...
All individual paper prepared and submitted for the conference of the 29th Session of the CIE,...
We are pleased to announce those who will serve the CIE as Officers of the Commission for the...