CIE Launches Two Advanced Tutorials on Measurement Uncertainty and LED Reference Spectra
The International Commission on Illumination (CIE) has announced two specialized tutorials taking place in September and November 2026, offering lighting professionals, metrology experts, and researchers an opportunity to deepen their knowledge of modern photometric and radiometric measurement techniques. Both tutorials are organized by CIE Division 2 – Physical Measurement of Light and Radiation and focus on internationally recognized CIE methodologies and publications.
Monte Carlo Method for Uncertainty Analysis
The first event, the CIE Tutorial on Monte Carlo Method for Uncertainty Analysis, will be held on 17 September 2026 at the Seogwipo KAL Hotel, Jeju Island, South Korea, immediately following the 16th International Conference on New Developments and Applications in Optical Radiometry (NEWRAD 2026). Organized jointly by CIE National Committee Korea and CIE Division 2, the afternoon tutorial introduces the principles and practical application of Monte Carlo methods for uncertainty analysis in photometry and radiometry. It is based on CIE 198:2011 Determination of Measurement Uncertainties in Photometry and its supplements, providing both theoretical background and hands-on guidance for evaluating measurement uncertainty.
The program features presentations by internationally recognized experts from Instrument Systems, Aalto University, PTB, ISFH, DTU, and CIE Division 2, covering topics such as uncertainty estimation in photometry, spectral integrals, array spectroradiometer measurements, and Monte Carlo applications for complex algorithmic calculations.
The tutorial is particularly relevant for photometry calibration laboratories, national metrology institutes, testing laboratories, and manufacturers and users of photometric and radiometric instruments. Registration opens on 15 June 2026, with the CIE Division 2 Annual Meeting and several Technical Committee meetings taking place the following day.
Online Tutorial on the CIE L41 Reference Spectrum
On 17 November 2026, CIE will host an online tutorial via Webex dedicated to the CIE L41 Reference Spectrum. The two-hour session addresses the growing need for an LED reference spectrum as lighting technology continues its transition from traditional tungsten sources to LEDs. Participants will learn about CIE 251:2023 LED Reference Spectrum for Photometer Calibration, its scientific background, and its practical application in calibration, measurement, and simulation.
The tutorial also explains how the L41 reference spectrum can be implemented in laboratory and industrial workflows and introduces the spectral distribution mismatch index. Presentations will be given by experts from CNAM, NIST, GigaHertz-Optik, the National Institute of Metrology (China), and Photometric Solutions Australia.
Designed for photometry calibration laboratories, national metrology institutes, manufacturers, and users of photometric instruments, the online event offers participants the opportunity to purchase a registration package that includes access to the CIE 251:2023 publication at a reduced rate. Registration is expected to open in September 2026.
Together, the two tutorials reflect CIE Division 2’s ongoing commitment to advancing best practices in physical measurement of light and radiation, while supporting the global lighting community with practical guidance on the latest standards, calibration techniques, and measurement methodologies.
For more information see the attached announcements.
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