Latest Publications

This report is a revision and update of CIE 150:2003 Guide on the Limitation of the Effects of Obtrusive Light from Outdoor Lighting Installations. The purpose of this Guide is to help formulate guidelines for assessing the environmental impacts of outdoor lighting and to give recommended limits... more
This report summarizes lighting recommendations on lighting and visual environment in interior spaces such as offices, public spaces, and residences for healthy older people (defined as people aged 50 years and older) with normal vision, and people with low vision, and implements guidelines... more
There are significant differences between LED packages or LED chips and conventional light sources which require measurements under specific measurement conditions.The absence of a heat sink allows only to use short current pulses for the optical measurements in order to avoid significant heating... more
Measurement results for light emitting diodes (LEDs) strongly depend on their thermal conditions. In order to achieve reproducible results with small uncertainties it is critical to accurately set and control the junction temperature of an LED during the time of optical measurement. This technical... more

Latest News and Events

The CIE Expert Tutorial and Workshops on Research Methods for Human Factors in Lighting will be a forum...
  Why do we light our roads? All road users should be able to see objects on the road and should be...
UNESCO Proclaims May 16 as the International Day of LightCIE is pleased to be part of the inaugrial IDL...
Full information on this first CIE Topical Conference available at  CIE 2018 Taipei, Conference...