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The 31st Quadrennial Session of the CIE, Nanjing, China

Hosting organizations:

CIE NC China: 13th International Forum of Automative Lighting (IFAL2025)

CIE Australia Lighting Research Conference 2025

The Balkan Light 2024 Conference: “Future of Lighting: Efficient and Intelligent”

CIE Q&A Sessions for National Committees, Associate National Committees, Affiliate and Supportive Members

Invitees: CIE National Committees, Associate National Committees, Supportive Members, Affiliate Members

CIE 2024 Position Statement on Integrative Lighting - Recommending Proper Light at the Proper Time, 3rd Edition

Knowledge about the effects of light on human health, behaviour, and well-being is advancing rapidly, as is interest in applying this knowledge in lighting technologies and practice.

This CIE Position Statement is the third... more

CIE 252:2024 Assessment of Discomfort Glare from Daylight in Buildings

Glare models developed for electric lighting conditions are not applicable to daylight situations. This report summarizes the daylight glare prediction models which were confirmed by independent studies.

The cause of the... more

CIE 254:2024 A roadmap toward basing CIE colorimetry on cone fundamentals

This Technical Report presents a roadmap for the CIE, to help guide its development of a new, complete, self-consistent system of CIE colorimetric measures, based directly on cone fundamentals, with explicit consideration of the... more

CIE S 027:2024 Photometry of road illumination devices, light-signalling devices and retroreflective devices for road vehicles