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 our 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.

CNC/CIE News

The International Day of Light, 16 May, 2020

This years theme is grass-roots lighting activities around the world. Many of these activities are described at #See The Light - a world wide message encouraging all to join the conversation and celebrate the importance of light and light-based technologies in our lives. For a complete list of lighting events around the world, visit the International Day of Light website.

2019 Annual Meeting

The annual meeting of the CNC/CIE was held in Ottawa on 31 October 2019 as part of the joint meeting of the CNC/CIE, the Council for Optical Radiation Measurements (CORM) and the CIE-USNC. The Division reports presented at the joint CNC/CIE and CIE-USNC business meeting are available here.

Joint CNC/CIE, CIE-USNC and CORM Technical Conference

The presentations from the Technical Conference, held 28-30 October, 2019, are now available.

Canadian Members on 2019-2023 CIE Board of Administration

The CNC/CIE is pleased to announce that Dr. Jennifer Veitch will serve as Vice-President Technical and Dr. Lorne Whitehead will serve as a Vice-President without portfolio on the 2019-2023 CIE Board of Administration. A complete list of the Officers of the 2019-2023 Board can be found on the CIE website.

Mirror Committee to ISO/TC 274 News

ISO TC274 Annual Meeting

The 8th Meeting of ISO TC274, originally scheduled  for 8-12 June 2020 in Didcot, UK, will now be held virtually.  For further information, visit the ISO or SCC website.

CIE News

CIE Position Statement on the use of Ultraviolet (UV) Radiation to Manage the Risk of COVID-19 Transmission

To support the international interest in the use of ultraviolet radiation (UVR) to manage the risk of COVID-19 transmission, the CIE has published a Position Statement (PS) that summarizes the two publications listed below that were recently made freely available.

CIE 187:2010 UV-C Photocarcinogenesis Risks from Germicidal Lamps
CIE 155:2003 Ultraviolet Air Disinfection

Key take-away points from this PS are:

  • UV-C is extremely useful in disinfection of air and surfaces or sterilization of water. However, CIE and WHO warn against the use of UV disinfection lamps to disinfect hands or any other area of skin (WHO, 2020).
  • UV-C can be very hazardous to humans and animals and should only be used in carefully controlled circumstances using well-designed products, ensuring that the limits of exposure are not exceeded. However, the risk of skin cancer from devices that emit only UV-C is considered negligible.
  • UV-C can cause photodegradation of materials and this should be considered where susceptible materials, such as plastics are in the exposed environment. 
  • More research is urgently needed on the safety aspects of novel UV-C sources, especially with respect to safety thresholds to avoid photokeratitis (”sunburn” of the cornea). 
  • For proper UVR assessment and risk management, appropriate UVR measurements are essential.
  • UV-C products aimed at general consumers may not be safe to use or may not be effective for disinfection. 

CIE Position Statement on Non-Visual Effects of Light - Recommending Proper Light at the Proper Time 

For everyone  staying at and working from home in these challenging times, check the CIE recommendations for healthy indoor light conditions and the use of proper light at the proper time to optimally benefit from light’s non-visual effects on sleep, health and wellbeing.

CIE Toolbox and User Guide for CIE S 026:2018

A Toolbox to support the use of the international standard CIE S 026:2018 CIE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light, has been developed. The S 026 Toolbox along with the S 026 User Guide are freely available on the CIE Website. A short video has been prepared to give some background information on the Toolbox and brief instructions on how to use it. 

CIE Position Statement on the Blue Light Hazard

The CIE has issued a position statement that puts into context the use of the term “blue light hazard” in line with the CIE’s current position on this term. It provides reassurance that people are normally not at risk of exceeding the internationally agreed blue light hazard exposure limits from white light sources used for illumination. However, it does warn about the inappropriate use of blue LEDs in products, such as toys, which are primarily used by young children.

CIE Events

CIE Tutorials on Colorimtery and Visual Appearance, July 28-29, 2020. This CIE online event replaces the 5th CIE Expert Symposium on Colour and Visual Appearance that also had a tutorial and workshop day. This new online event will be a great opportunity to learn more about the CIE work on colorimetry and visual appearance. The topics of the tutorials are: CIE Colorimetry, 3D Printing, Measurement of Bidirectional Reflectance Distribution Function (BRDF), and Measurement of Sparkle. Further details can be found on the tutorial web page.

 CIE Workshop on the Calculation and Measurement of Obtrusive Light November 12-13,  2020, Ostrava, Czech Republic. This workshop is being hosted jointly by Division 4 and the Technical University of Ostrava. Its goal is to bring together professionals from different disciplines to discuss and outline future directions of investigation, research, development and standardization in the field of obtrusive light and light pollution. The event is  scheduled during the new moon phase of May and will include practical measurements of sky glow when road lighting of an urban area is on and off. Anyone interested in the negative effects of artificial light on the nighttime environment should consider attending this workshop. Further details will be provided as they become available.

CIE/ICNIRP Online Tutorial on the Measurement of Optical Radiation and its Effects on Photobiological Systems, August 26-27, 2020, This online tutorial replaces the tutorial and workshop on this topic announced earlier. The planning for this event is still in progress. It is expected that registration will open towards the end of April. Please monitor the tutorial web page for updates.

CIE Call for Experts

CIE has over 70 TCs working on new reports and international standards. If you have expertise to contribute to any of these or the new ones described 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 CIE Central Bureau and the This email address is being protected from spambots. You need JavaScript enabled to view it.. Please note that all Canadian members of TCs must be or become members of the CNC/CIE.

TC 4-62: Adaptive Road Lighting

The purpose of this TC is to analyze needs, specify recommendations, develop methodology and promote application of adaptive road lighting based on various conditions and input data from field sensors and interconnected systems with respect and tailored to specific requirements of different user groups and user patterns.
Chair: This email address is being protected from spambots. You need JavaScript enabled to view it.

TC 2-93: Revision of ISO 23539:2005(E)/CIE S 010/E:2004 Photometry - The CIE system of physical photometry

The purpose of this TC is to revise ISO 23539:2005(E)/CIE S 010/E:2004 Photometry - The CIE system of physical photometry considering the comments raised at the systematic review of this international standard. 
Chair: This email address is being protected from spambots. You need JavaScript enabled to view it.

TC 2-94: Measurement of Total Transmittance, Diffuse Transmittance and Transmittance Haze

This TC will investigate how to improve the accuracy of the conventional haze measurement methods and develop new techniques to obtain total transmittance, diffuse transmittance, and transmittance haze in a single sequence of measurements. In addition to addressing the problem of measurement inconsistency caused by employing different measurement methods or different measurement instruments which has perplexed industry for some time, the study of high haze (> 40 %) measurement is also included. The purpose of this TC is to give guidance to industry for best practice metrology, to enable them to develop and manufacture consistent and reliable products.
Chair: This email address is being protected from spambots. You need JavaScript enabled to view it. 

CIE Publications

Summaries of new CIE publications, including joint ISO/CIE documents, can now be found under New Publications.

Members of the CNC/CIE are reminded that they are able to get a discount on all CIE publications. The latest discount code, effective June 2019, is currently avaiable under CNC/CIE Members. If you do not have access, please contact the This email address is being protected from spambots. You need JavaScript enabled to view it. for your login and password.

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