In April 2013 CIE celebrated its 100th birthday in the course of its Midterm Meeting in Paris, France. The meeting was accompanied by a 2-days conference on the subject "Towards a New Century of Light". In 2 keynote speeches, 60 oral presentations and 134 posters experts from all over the world presented latest research results and survey lectures on various subjects related to light and lighting, e.g. "History of Lighting and Art", "Hot Topics in Outdoor Lighting", "Colour Quality Assessment", "Health and Wellbeing", "Workplace Lighting Concepts", "Hot Topics in Interior Lighting", "Advanced Correction Methods for Spectroradiometry", "Lighting the City " Applications and Economics", "Integrating Daylight and Electric Lighting", "LED Photometry and Performance of Photometers", "Lighting the City " Luminaires and Design", "Concepts in Lighting Quality", "Brightness and Colour, Individual or Shared Percepts", "Lighting the City " Spaces", "Wellbeing, Glare and Comfort". The Proceedings of this Conference consist of 1261 pages including 173 papers of oral and poster presentations with some 1200 figures and some 300 tables.