The full programme is now available and can be viewed here and as a PDF.

Please note that the programme remains subject to change.

All six Scientific Divisions of the CIE will meet during the Midterm Meeting, and will also hold their Annual Meetings there. The core scientific work of the CIE is carried out by its Technical Committees (TCs), which produce our standards and technical reports. Many of these TCs will hold face-to-face meetings in Vienna in the days following the Conference. For those new to the CIE and interested in getting involved in its scientific work, this is an excellent opportunity to interact with leading experts from around the world. The Division and Technical Committee (TC) meetings are scheduled for July 10–11, 2025.

Division and TC Meetings are open also to interested experts, though registration is required, and a separate fee applies. The fee for these meetings remains unchanged from the 2023 session in Ljubljana, despite rising inflation, to make participation more accessible for Division and TC members.

The meetings will take place at the main headquarter of the WKO (Austrian Economic Chambers). This modern facility is centrally located in Vienna. The Entrance is via Schönburgstraße 1 (tram stop „Johann-Strauß-Gasse“ of tram lines 1, 62 and Badner Bahn „Johann-Strauß-Gasse“ is just a few metres away; next subway stop is “Taubstummengasse” on subway line 1 in 10 minutes walking distance). The venue offers excellent accessibility, with convenient public transportation links for all attendees.

IMPORTANT NOTE: Due to major construction works, several tram lines (1, 2, 71, and D) serving the venue are being partially rerouted. We recommend checking alternative routes, such as the U1, U2, U3, and U4 subway lines. More detailed information can be found here.

We also recommend using the “Wiener Linien” app for real-time public transport updates and for purchasing tickets (including the 7-day pass). Please note that the Badner Bahn (BB) is included in your public transport ticket as long as you are traveling within Vienna city limits

Last updated: 02.07.2025

Every room will have the possibility for a hybrid setting!

Abbreviations
TC – Technical Committee
TCC – Technical Committee Chair
RF – Research Forum

CIE 2025 Division and TC Meetings

Annual Meetings of the Divisions

Division Title
Division 1 Vision and Colour
Division 2 Physical Measurement of Light and Radiation
Division 3 Interior Environment and Lighting Design
Division 4 Transportation and Exterior Applications
Division 6 Photobiology and Photochemistry
Division 8 Image Technology

Technical Committee (TC) and Joint Technical Committee (JTC) Meetings

TC/JTC Title
TC 1-99 Modelling Two-Dimensional Colour Appearance Scales
TC 1-100 To recommend CAM16-UCS as the CIE Uniform Colour Space
TC 1-101 Influence of ipRGCs on brightness perception
TC 1-102 Method for calculating CIE tristimulus values
TC 1-103 Research Methods for psychophysical studies of discomfort from glare
TC 1-104 Verification of the physiologically-relevant CIE 2006 LMS cone fundamental CMFs and their linear transformation the 2015 XYZ CMFs
TC 2-81 Update of CIE 065:1985 (Absolute Radiometers)
TC 2-85 Recommendation on the geometrical parameters for the measurement of the Bidirectional Reflectance Distribution Function (BRDF)
TC 2-89 Measurement of Temporal Light Modulation of Light Sources and Lighting Systems
TC 2-91 Optical Measurement Methods of LED Packages and LED Arrays
TC 2-95 Measurement of Obtrusive Light and Sky Glow
TC 2-96 Revision of ISO/CIE 19476: 2014 Characterisation of the performance of illuminance meters and luminance meters
TC 2-97 Revision of CIE S 025/E:2015 Test Method for LED Lamps, LED Luminaires and LED Modules and its supplement
TC 2-99 Standard File Format for Electronic Transfer of Optical Radiation Data for Luminaires, Lamps and LED modules
TC 2-100 Software Validation Spectra, Derived Quantities and Metrics
TC 3-60 Spectral Daylight Characteristics
TC 3-61 Review of regional daylight requirement to assess the feasibility of global harmonization
TC 3-62 Resilient Lighting
TC 3-63 Decision scheme to determine lighting requirements for indoor environments
TC 4-50 Road Surface Characterization for Lighting Applications
TC 4-53 Tunnel Lighting Evolution
TC 4-59 Guide for Lighting Urban Elements
TC 4-62 Adaptive Road Lighting
TC 8-18 Guidelines for Definition and Evaluation of High Dynamic Range Images and Image Sequences
JTC-05 Review of IEC 62471/CIE S009
JTC-13 Depreciation and Maintenance of Lighting Systems
JTC-18 Lighting Education
JTC-20 Wearable alpha-opic dosimetry and light logging methods, limitations, device calibration and data schemes
Q&A session Q&A session with CIE VPT and TM for new TCCs as well as Division Editors during CIE2025

Discussion Meetings for Potential Future TC Work

Potential TC Title
Potential TC for Division 8
 Standardization for Display Colour Consistency
Potential TC for Division 8 Measuring the non-uniform aspects
Potential TC Characterization & Calibration of instruments that produce synthesized measurement results

Research Fora (RF)

RF Title
RF-03 Matters related to Colour Rendition
RF-05 Implementation of CIE 2006 Cone Fundamentals in Photometric and Colorimetric Measurements
RF-06 Toward a new CIE reference observer non-biological
RF-08 Possible effects of daylight and indoor lighting on circadian rhythms of the skin

Location

HOW TO GET THERE

⇒ BY PUBLIC TRANSPORT 
U1 | Taubstummengasse
Tram lines 1, 62 | Johann-Strauß-Gasse
Badner Bahn | Johann-Strauß-Gasse
Bus 13A | Johann-Strauß-Gasse

⇒ BY CAR
Austrian Federal Economic Chamber
Entrance via Schönburgstrasse 1

IMPORTANT NOTE: Due to major construction works, several tram lines (1, 2, 71, and D) serving the venue are being partially rerouted. We recommend checking alternative routes, such as the U1, U2, U3, and U4 subway lines. More detailed information can be found here.

We also recommend using the “Wiener Linien” app for real-time public transport updates and for purchasing tickets (including the 7-day pass). Please note that the Badner Bahn (BB) is included in your public transport ticket as long as you are traveling within Vienna city limits