Latest Publications

This technical report provides basic measurement principles and practical guidance in goniospectroradiometry of optical radiation sources (i.e. measurement of the spectral distribution as a function of the emission angle of the source). Specifically, it includes measurement principles of the... more
AC-driven LEDs (AC LEDs) operate on AC power and may be connected directly to a mains supply without the need of any electronics (e.g. LED drivers or control gears) for converting AC power to a constant direct current. Similar to DC-driven LEDs (DC LEDs), accurate measurements of AC LEDs are also... more
This document was prepared by the International Commission on Illumination (CIE) in cooperation with Technical Committee ISO/TC 274, Light and lighting. This Draft International Standard is a revision of ISO 11664-2:2007 | CIE S 014-2:2006. It will cancel and replace ISO 11664-2:2007 | CIE S 014-2:... more
The Proceedings of the 29th Session of the CIE comprise two volumes. Volume 1 includes the papers of the three-day technical conference having taken place in the course of the Session (June 17–19, 2019). It is subdivided into two parts and contains, beside general information regarding CIE, on 1858... more

Latest News and Events

Come visit us at the L + B 2020 Expo at Messe Frankfurt. You can find us in Hall 3.1 FOY 1. We look...
  A Toolbox to support the use of the international standard CIE S 026:2018 CIE System for Metrology of...
Supporting the global action to reduce the transmission of COVID-19 CIE releases two key publications...
The Blue Light Hazard - What Does it Really Mean?- a webinar provided and hosted by the OSA Color...