The U.S. National Committee of the International Commission on Illumination (CIE-USNC) upcoming events

CIE Project: "Understanding Science - Understanding Light" (1 Jan 2025)

Wed, 01 Jan 2025 05:00:00 GMT

Running from 1 January 2025 to 30 June 2026, the CIE project “Understanding Science – Understanding Light”, funded by the Vienna Business Agency, focuses on two key topics: “Light Pollution” and “Light and Health”. Through public lectures, workshops, and other activities, the project helps audiences better understand the role of light in our lives. Learn more

CIE Tutorial on Monte Carlo Method for Uncertainty Analysis (17 Sep 2026)

Thu, 17 Sep 2026 04:00:00 GMT

The CIE Tutorial on Monte Carlo Method for Uncertainty Analysis is organised by CIE NC Korea and CIE Division 2: Physical Measurement of Light and Radiation, in conjunction with the 16th International Conference on New Developments and Applications in Optical Radiometry (NEWRAD 2026). It will take place at the Seogwipo KAL Hotel in Jeju Island, South Korea, on 17 September 2026, following the conclusion of NEWRAD 2026. The tutorial will start at 13:00 and conclude at 18:30 Korea Standard Time (UTC+9). The CIE Division 2 Annual Meeting will take place on 18 September 2026, from 08:30 to 12:00 Korea Standard Time (UTC+9), at the same venue. Meetings of several CIE Division 2 Technical Committees will follow after the Annual Meeting.

CONTEXT AND CONTRIBUTION TO CIE WORK

The CIE Tutorial on Monte Carlo Method for Uncertainty Analysis will present the principles and practical applications of the Monte Carlo method for uncertainty analysis in photometry and radiometry, with reference to CIE 198:2011 Determination of Measurement Uncertainties in Photometry and its supplements CIE 198-SP1.1:2011 Modules for the Construction of Measurement Equations and CIE 198-SP1.2:2011 Examples for Models with Individual Inputs. The tutorial provides both theoretical background and practical guidance, supporting professionals in strengthening their understanding of uncertainty evaluation in line with established CIE publications.

The tutorial offers valuable insights and is particularly relevant for professional working in photometry and radiometry, including photometry calibration laboratories (such as National Metrology Institutes), testing laboratories in photometry, radiometry, and colorimetry, as well as manufacturers and users of photometric and radiometric instruments.

TUTORIAL PLANNING COMMITTEE

The planning committee consists of members of CIE TC 2-102: Roadmap for Measurement Uncertainty Training, as listed below:

Dong-Hoon Lee – Chair of TC 2-102, Director of Division 2
Gaël Obein – Member of TC 2-102, Secretary of Division 2
Qian (Cherry) Li – Member of TC 2-102, Associate Director of Division 2
Tobias Schneider – Member of TC 2-102, Associate Director of Division 2
Hiroshi Shitomi – Member of TC 2-102, Associate Director of Division 2
Tony Bergen – Member of TC 2-102, CIE Vice-President Technical
Erkki Ikonen – Member of TC 2-102
Udo Krüger – Member of TC 2-102
Johannes Ledig – Member of TC 2-102

PROGRAMME

The latest draft programme can be downloaded below. Please note that it remains subject to change.
Download the programme (PDF)

REGISTRATION

The registration system will open on 15 June 2026.
In the meantime, you can register your interest HERE to receive a notification when official registration opens.

Terms and conditions (PDF)

CIE Workshop on Future Topics in Road Lighting (13 Oct 2026)

Tue, 13 Oct 2026 04:00:00 GMT

The International Commission on Illumination (CIE) will hold the workshop “Future Topics in Road Lighting” on 13–14 October 2026 on the occasion of the annual meeting of CIE Division 4. The event is organised in collaboration with the Italian National Committee of the CIE, the Italian Association of Lighting Manufacturers (ASSIL), and the Italian Lighting Association (AIDI), and hosted by the National Metrology Institute of Italy (INRiM) in Torino.

The workshop will begin on the afternoon of 13 October and conclude by lunchtime on 14 October.

CIE Division 4 and Technical Committee meetings will take place at the same venue from 14 to 15 October. These meetings are scheduled to conclude on the afternoon of 15 October, by 13:30 local time.

The workshop will address key themes and cross-disciplinary aspects expected to shape the future of road lighting, including:

Adaptive lighting systems
Road surface characterization of current road surfaces
The illuminated road environment for all users
Obtrusive and ecological lighting impacts
Challenges related to autonomous and assisted vehicle sensors
Emerging recommendations and new calculation approaches for road lighting

The event is designed to foster open discussion among chairs, invited speakers, and participants (including dedicated student opportunities), with the goal of gathering valuable input to support CIE Division 4 Transportation and Exterior Applications in developing its strategic roadmap.

Ample time will be devoted to interactive discussions and a panel session featuring a SWOT analysis of current and emerging road lighting topics.

The schedule has been designed to optimise travel logistics, minimizing overnight stays for participants attending both the workshop and the subsequent CIE meetings.

The programme will be enriched by social events designed to encourage networking among international participants:

13 October | Workshop Dinner “Future Topics in Road Lighting”: At the end of the first day of the “Future Topics in Road Lighting” Workshop, participants are invited to a convivial dinner on the River Po, in the city centre.
14 October | Casa Martini Experience: As part of the TC 4-11 activities, at the end of the Division 4 TC meetings, an evening event will be held at Casa Martini the historic distillery in Turin founded in 1863 and renowned worldwide. The evening will include a guided tour of the production facility and museum, followed by a Vermouth Class for an immersive experience into the world of Vermouth and Martini.

For further updates please visit the official website of the workshop.

REGISTRATION

The workshop is subject to a registration fee, which includes the social dinner on October 13. Meetings of Division 4 and the Technical Committees are free of charge. The Casa Martini experience, scheduled for October 14, will be available for an additional fee.

Registration will be open from April 1 to September 15, 2026. An early-bird rate will be available from April 1 to July 31, while the standard rate will apply from August 1 to September 15.

Pre-registration: https://eu.jotform.com/252822684839369

SCIENTIFIC COMMITTEE

Dionýz Gašparovský – Director of Division 4
Steve Fotios - Associate Director of Division 4
Sermin Onaygil - Associate Director of Division 4
Paola Iacomussi – CIE NC Italy
Anna Pellegrino – CIE NC Italy
GianPiero Bellomo – CIE NC Italy

ORGANIZING COMMITTEE

Paolo Di Lecce - CIE NC Italy
Paola Iacomussi – CIE NC Italy
Anna Pellegrino – CIE NC Italy
GianPiero Bellomo – CIE NC Italy

Stay tuned for further information!

CIE Online Tutorial on the CIE L41 Reference Spectrum (17 Nov 2026)

Tue, 17 Nov 2026 12:00:00 GMT

The CIE will hold an online tutorial on the CIE Reference Spectrum L41 on 17 November 2026, from 13:00 to 15:00 CET via Webex.

This two-hour tutorial will explain the need for an LED reference spectrum in the context of the transition from tungsten light sources to LED-based lighting. It will introduce the CIE 251:2023 LED Reference Spectrum for Photometer Calibration, describe its key properties, and present practical use cases in calibration, measurement, and simulation.

The tutorial will also provide guidance on implementing the reference spectrum in laboratory and industrial workflows, supporting broader adoption by photometry calibration laboratories, national metrology institutes, and manufacturers and users of photometric instruments.

For both CIE members and non-members, the tutorial offers special package pricing that includes access to the CIE 251:2023 LED Reference Spectrum for Photometer Calibration publication as part of the registration fee, making it a particularly valuable opportunity to obtain both expert training and the publication together.

This tutorial will be particularly useful for photometry calibration laboratories, including national metrology institutes, as well as manufacturers and users of photometric instruments who are working with LED-based lighting, calibration, measurement, or simulation.

TUTORIAL SCIENTIFIC COMMITTEE

The scientific committee consists of the CIE Division 2: Physical Measurement of Light and Radiation management team.

Dong-Hoon Lee – Director of Division 2
Gaël Obein – Secretary of Division 2
Valéry Ann Jacobs – Editor of Division 2
Qian (Cherry) Li – Associate Director of Division 2
Tobias Schneider – Associate Director of Division 2
Hiroshi Shitomi – Associate Director of Division 2
Armin Sperling – Associate Director of Division 2
Anders Thorseth – Associate Director of Division 2

REGISTRATION

Registration is expected to open in September. The exact opening date will be announced in due course.
In the meantime, you can register your interest HEREto receive a notification when official registration opens.

The 31st Quadrennial Session of the CIE (9 Jul 2027)

Fri, 09 Jul 2027 04:00:00 GMT

Hosting organizations:

China NC of CIE (China Illuminating Engineering Society, CIES)
Nanjing Urban Lighting Construction and Operations Group Co., Ltd
Southeast University

The city: Nanjing city located in the center of Yangtze Delta which has the largest lighting industry in China. One of the leading company Nanjing Urban Lighting Construction and Operations Group and the very famous Southeast University in Nanjing agree to help the CIE and CIES to organize and economically support the Conference.

The venue: Southeast University is a national top-level university directly under the Ministry of Education of the People’s Republic of China. In recent years, it has hosted or organized a number of highly prominent national or international conferences and established close cooperation with 47 world-class universities and high-level research institutions from 18 countries or regions.

The event website and registration information will be available in 2026.

Stay Informed – Register Your Interest

Be the first to receive updates about our upcoming event. By registering your interest, you’ll be among the first to know when the official website and registration details are published. Simply fill out the form, and we’ll keep you informed as more information becomes available.

Register HERE.