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, 2021

This years theme is Trust Science. The goal is to encourage the public expression of confidence in the scientific process. Everyone is invited to share and join the pledge at Trust Science.org.

Canadian Students: Experience the latest in Light and Lighting Research at the online CIE 2021 Mid-term Conference

The International Commission on Illumination (CIE) is a global non-profit organization dedicated to advancing the science, technology and art of light and lighting. Its scope encompasses the full range of related topics from scientific fundamentals such as vision, the metrology of optical radiation, photobiology, and photochemistry, through lighting applications indoors and outdoors and in image display.

To fulfil its goal of providing a forum for broad open expert discussion and information exchange within, between and beyond these fields, the CIE convenes scientific conferences every two years.  Its next meeting will be the CIE Mid-Term conference, taking place online from September 27-29, 2021.

The Canadian National Committee of the CIE will sponsor the registration fee for a select few Canadian students to attend the online CIE Mid-Term meeting. We invite applications from students in all fields of inquiry relevant to the CIE’s scope, including physics, vision science, optometry, psychology, architecture, engineering, lighting design and biology.

Successful applicants will have their registration fees paid by the CNC/CIE. Following the conference, they will be expected to report on their experiences at the conference, either in a short written report or in a presentation at the online Fall 2021 meeting of the CNC/CIE.

An application can be downloaded here. Completed applications must be sent to the This email address is being protected from spambots. You need JavaScript enabled to view it. by June 30, 2021, to be considered.

2021 Joint Virtual Technical Conference of the Council for Optical Radiation Measurement (CORM), USNC-CIE and CNC-CIE November 15-17, 2021

The CNC/CIE will hold a joint Technical Conference with the Council for Optical Radiation Measurements (CORM) and the CIE-USNC.  Abstracts are welcome in the areas of light, vision, metrology, including, but not limited to the following topics:

  • Current Research at the NMIs
  • Environmental Radiometry
  • UV & IR Radiation – Measurements, Concerns & Applications
  • Optical Properties of Materials
  • LED Lighting for Specialized, Industrial & Commercial Applications
  • Display Metrology
  • Horticultural Lighting
  • Health & Well-Being Responses to Light and their Measurement
  • Interior & Exterior Lighting
  • Vision & Color

Presentations will be 20-25 minutes.  If you are interested in presenting at the conference, then please send your talk title & abstract to This email address is being protected from spambots. You need JavaScript enabled to view it.

 2020 Annual Meeting

The 65th annual meeting of the CNC/CIE was held on 11 December, 2020. The reports presented at the meeting are available here.

Mirror Committee to ISO/TC 274 News

2020 Annual Meeting

The annual meeting of the Canadian Mirror Committee to ISO/TC 274 was held as part of the CNC/CIE meeting on 11 December, 2020

CIE Events

CIE Midterm Meeting

The midterm meeting of the CIE, 26 September to 2 October, 2021, will now be totally online. The meeting is being hosted by the CIE National Committe of Malaysia. The website is now open. The deadline for early registration is 31 July, 2021. 

Online Tutorial on the Understanding and Application of CIE S 026:2018

The CIE has developed an online tutorial to support the understanding and proper application of CIE S 026:2018 CIE System for Metrology of Optical Radiation for ipRGC-Influenced Responses to Light.

The focus of the tutorial is the implementation of CIE S 026:2018 in lighting metrology, design and applications.  Invited experts will present lectures that explain the basic concepts of the newly defined CIE metrics and quantities, discuss their implications, and provide practical examples for various application contexts, such as workplaces, schools, hospitals and elderly (care) homes. Tutorial participants will learn how to quantify optical radiation for its ability to stimulate each of the five retinal photoreceptors (three cones, rods and melanopsin-containing ipRGCs) that can contribute to the non-visual responses to light, and how these responses affect people’s health, functioning and well-being.

The tutorial will be comprised of pre-recorded presentations followed-up with the opportunity to attend one of two "live" online Q&A sessions. The pre-recorded presentations will be made available from June 13, 2021 with options to attend the Q&A sessions on: July  6, 2021,  09:00 - 11:00 CEST, or July 13, 2021, 16:00 - 18:00 CEST.

Registration opens in March. Further details can be found or will be available shortly on the CIE 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. As well, CIE experts have prepared a 10 minute video to support your understanding of the position statement.

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 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 1-99: Modelling Two-Dimensional Colour Appearance Scales

The purpose of this TC is to recommend a set of two-dimensional colour appearance scales based on perceptual correlates derived from colour appearance models using existing experimental data, and to provide evidence of the value of these scales in appropriate applications. The scales include whiteness, blackness, vividness, depth (saturation), saturation, and clarity.  

Chair: Ming Ronnier Luo 

TC 3-57: A generic discomfort glare sensation model

The purpose of this TC is to develop a new model to improve understanding, calculation and criteria for the evaluation of discomfort glare. It will model the glare sensation from a physiological viewpoint to make it applicable for various types of lit spaces and light sources (both indoor and outdoor) and to allow consideration of occupant profiles (age, visual ability, etc.) in lighting design.

Chair: This email address is being protected from spambots. You need JavaScript enabled to view it.

TC 3-58: Visual ergonomics and digital display use

 The purpose of this TC is to update CIE 60:1984 so that it is relevant to modern digital device use.

 Chair: Jennifer Long

TC 8-18: Guidelines for Definition and Evaluation of High Dynamic Range Images and Image Sequences

The purpose of this TC is to propose a definition of High Dynamic Range (HDR) images and image sequences (Images, hereafter), including luminance level, contrast, and spatial/temporal distribution. To define luminance levels, observing environment, adopted white point, the kinds of Images to be used in research experiments and their assessment. To recommend methods of calculating key characteristics of the HDR Images.

 ChairMekides Assefa Abebe

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 December 2020, 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.