Canadian National Committee of the CIE

Welcome to our website. The CNC/CIE is the collective Canadian voice of people interested in the science and art of light and lighting. Membership is open to anyone interested in any aspect of lighting including vision, photometry, colorimetry, photobiology and the application of these to the use of light and lighting both indoors and out. For further information on the CNC/CIE go to About the CNC. For a list of recent events see our Activities page.

As part of its mandate, the CNC/CIE supports the Standards Council of Canada by providing the core of the membership of the Canadian mirror committee to ISO/TC 274 – Light and Lighting. ISO/TC 274 is responsible for standardization in the field of application of lighting in specific cases complementary to the work items of the CIE and the coordination of drafts standards from the CIE. For further information on ISO/TC 274 see About ISO/TC 274 or visit the ISO website.


2022 Annual Meeting

The 67th Annual Meeting of the CNC/CIE was held on Monday, November 21st 2022. The reports from the meeting are available here.

2021 Annual Meeting 

The 66th annual meeting of the CNC/CIE was held virtually on November 19th, 2021. The Annual Report for that meeting is now available. The meeting was preceded by a joint virtual Technical Conference with the Council for Optical Radiation Measurements (CORM) and the CIE-USNC. Presentations from the conference are available on the CORM website as well as videos of each presentation.

President-elect of the CIE

The CNC/CIE is please to announce that Dr. Jennifer Veitch has been appointed as President-elect of the CIE for the period 2021-2023. At the Quadrennial meeting in 2023, she will take on the role of President of the CIE for the period 2023-2027.

Canadian Mirror Committee to ISO/TC 274 News

2022 Annual Meeting

The annual meeting of the Canadian Mirror Committee to ISO/TC 274 was held as part of the CNC/CIE Annual Meeting.

Local Light and Lighting Events

2022 Joint virtual technical conference of the Council for Optical Radiation Measurement (CORM) and the USNC-CIE November 14-15, 2022

The joint CORM and USNC-CIEConference, will be held virtually Monday, November 14, 2022 through Tuesday November 15, 2022 from 11:00 AM – 5:30 PM Eastern Standard Time. Registration is now open. A preliminary programme and registration link can be found on the CORM website.

Lifetime Testing of Light Emitting Diodes and LED Products

Dr. Nadarajah Narendran from the Lighting Research Centre in Troy, New York, USA presented two free webinars on behalf of the IEA 4E Solid-State Lighting Annex, summarising his report on lifetime definitions for LEDs and LED products, including failure mechanisms, accelerated life tests and test methods for estimating lifetime.  The report is titled "Literature Summary of Lifetime Testing of Light Emitting Diodes and LED Products" and it surveys and summarises the literature, making recommendations as to which approach is best. For more information about the report, please click here to view a news item.
Both webinars were recorded and the slides / recordings are available on the IEA 4E SSL Annex website.

Interlaboratory Comparison of Goniophotometers, IC 2017

The IEA 4E SSL Annex has published a ground-breaking study, the Interlaboratory Comparison of Goniophotometers, IC 2017.  This work brings together the test results of 36 participating laboratories from 19 countries with a total of 42 goniophotometric instruments and represents the largest interlaboratory comparison of such equipment ever undertaken. This comparison aims to answer many questions of importance for laboratories as well as for policy makers involved in performance regulations and enforcement.

Dr. Yoshi Ohno, Task Leader of IC 2017, presented the results of IC 2017 at two webinars on January 25th, 2022. For recordings of these webinars, visit the IEA-4E website. 

CIE News

CIE Tutorial and Expert Symposium on Temporal Light Modulation (TLM)

The CIE  will hold a one day tutorial followed by a one day symposium on Temporal Light Modulation (TLM) at the National Technical University of Athens, Greece, October 10-12, 2022. This is planned to be an in-person event.

Temporal light modulation (TLM) causes visual perception effects such as flicker, phantom array, and stroboscopic effects. All of these issues can have adverse effects on users of lighting products (such as performance and health), thus the accurate assessment of TLM is fundamental to proper assessment of its effects on users.

The tutorial will be of benefit to testing laboratories, lighting companies, equipment manufacturers, researchers, students and anyone else who is interested in all aspects of TLM. Topics covered in the tutorial will include: what is TLM, how TLM affects us, how to measure TLM accurately, tips on calculation of TLA metrics, and guidance on measurement uncertainty evaluation.

There will be a call for papers for the  one-day scientific symposium. The abstract submission system will open in March. Some information about this event is already available on the CIE Website; please check there for updates.

CIE 2023

CIE 2023 will be hosted by the CIE National Committee of Slovenia in Ljubljana, September 15-23, 2023, with the conference on September 18-20, 2023 and the CIE Division and Technical Committee meetings on September 21-23, 2023. The broad theme of the CIE 2023 conference is "Innovative Lighting Technologies" Abstracts will be accepted on the specific topics listed below and those of the CIE Divisions:

  • Smart lighting
  • Sustainable lighting technologies and practices
  • Integrative lighting for indoors and outdoors
  • Metrology for new technologies
  • Image display in augmented and virtual reality modes

The abstract submission system for CIE 2023 will open by December 7, 2022.  For the latest information, visit the CIE 2023 website.

Call for Experts

CIE has over 70 Technical Committees (TCs) working on new reports and international standards. A brief description of each TC is available under CIE Technical Committees. If you have expertise to contribute to any of these, especially the new ones shown below, you can apply for membership by sending a completed CIE TC Membership form and CIE Copyright Agreement form  to the relevant TC Chair, with a copy to the This email address is being protected from spambots. You need JavaScript enabled to view it. and the CNC/CIE Secretariat. Please note that all Canadian members of TCs must be or become members of the CNC/CIE.

TC 2-98: Revision of CIE 130-1998 Practical Methods for the Measurement of Reflectance and Transmittance.

In addition to Technical Committee, you are encouraged to participate in CIE Research Fora (RFs). RFs exist to facilitate ongoing knowledge exchange and research on a scientific topic or research area where there is insufficient completed scientific work to support the work of a CIE Technical Committee. Currently the CIE has three RFs:

RF-01: Spectral Imaging
RF-02: Matters relating to temporal light modulation
RF-03: Matters related to Colour Rendition

CIE Publications

One key activity of the CIE is the publication of technical and scientific work in the form of Technical Reports, International Standards, and Technical Notes. Technical Notes are freely available. Technical Reports and International Standards can be purchased through the CIE Web Shop. Summaries of recent publications, including links to recent Technical Notes, can be found under New Publications.

In addition to formal publications, the CIE Board of Administration will, from time to time, issue Position Statements. Summaries of recent CIE Position Statements can be found here.

Members of the CNC/CIE are reminded that they are able to get a discount on all CIE publications. The latest discount code, effective December 2020, is currently available in the members only area under Publication Discount Code. To log in, go to CNC/CIE Members. If you do not have access, please contact the CNC/CIE Secretariat.

For general enquiries contact the This email address is being protected from spambots. You need JavaScript enabled to view it..