International Lighting Seminar: Metrology, Lifetime, Health and Smart Sustainable Lighting
Tuesday, 14th May 2024
Chancellor’s Hall, Senate House,
University College London, Malet Street, London, WC1E 7HU
LED lighting continues to expand its market share, taking over conventional technologies in all end-use applications, yet challenges and opportunities relating to lighting remain. This International Lighting Seminar brought together Experts from the IEA 4E SSLC Platform to present their latest work on a range of topics including a new Interlaboratory Comparison on Temporal Light Modulation (commonly known as flicker); research into new test methods and metrics; a literature review of health effects associated with lighting; the opportunity and impact on energy consumption of smart lighting; and a recent life-cycle assessment comparing linear fluorescent lamps and LED tubes.
The meeting agenda is available here for download as a PDF.
Moderators: Prof Georges Zissis, Chair, IEA 4E SSLC Platform, La Place University Toulouse
Nils Borg, Manager, IEA 4E SSLC Platform, Stockholm, Sweden
14h00 Welcome and IEA 4E SSLC Platform Overview
Nils Borg, Manager, IEA 4E SSLC Platform, Sweden
- Welcome and introduction to the SSLC Platform
- A link between policy standards, testing and requirements
- Overview of work and activities
- Energy Savings Potential of Lighting Systems and Controls
Video link: https://www.youtube.com/watch?v=sxjgsIx5xZw
14h15 Interlaboratory Comparison 2023 on Measurement of Temporal Light Modulation
Dr Yoshi Ohno, NIST Fellow, National Institute of Standards and Technology, USA
- Purpose of IC 2023
- Findings of Nucleus Lab Comparison
- Progress on Participant Testing and Reporting
- Issues Identified and Data Being Prepared for Standardisation Community
Video link: https://www.youtube.com/watch?v=44WccHgzpoE
Slides link: SSLC Platform International Seminar – Yoshi Ohno
14h45 Improvements in Test Methods and Metrics
Carsten Dam-Hansen, DTU, Denmark;
Steve Coyne, Light Naturally, Australia
- Test of Temporal Light Modulation (TLM)
- Influence of power supply selection on flicker metric PstLM
- Stroboscopic effect SVM calculation: current approach and potential improvements
- Standard test options for determining lifetime
- Impact of long-duration switching
- Research involving accelerated aging and pulse/soak testing at elevated temperatures and comparison to standard test method
Video link: https://www.youtube.com/watch?v=F_4eZJS0nds
Slides link: SSLC Platform International Seminar – Carsten Dam Hansen and Steve Coyne
15h40 Coffee / tea / soft drink break with light snacks
16h00 Solid-State Lighting: Review of Health Effects
Christophe Martinsons, CSTB, France
- Overview of new Lighting and Health report
- Photobiological safety, glare, circadian effects, acute neuro-behavioural effects, temporal light modulation and long-term effects
- Conclusions and recommendations
Video link: https://www.youtube.com/watch?v=XMOxkceZX0U
Slides link: SSLC Platform International Seminar – Christophe Martinsons
16h30 Advanced Smart Lighting must also be Energy Smart
Casper Kofod, Director, Energy Piano, Denmark
- Smart Lighting trends, barriers and potential
- SSL Annex Second Report on Smart Lighting – findings
- Performance when dimming and/or changing colour temperature
- Regulation and Standards from IEC/CIE – need for characterisation
- Recommendations for the future including integrating with controls
Video link: https://www.youtube.com/watch?v=gqGTyN2iNgI
Slides link: SSLC Platform International Seminar – Casper Kofod
17h00 LED Linear Lamp Life-Cycle Assessment
Michael Scholand, Deputy Manager, SSLC Platform, UK
- Life-Cycle Assessment overview
- Key findings and comparison with baseline fluorescent lamps
- Conclusions and recommendations
Video link: https://www.youtube.com/watch?v=Sshj87ie2Z4
Slides link: SSLC Platform International Seminar – Michael Scholand
17h25 Thanks and closing remarks
Nils Borg, Manager, IEA 4E SSLC Platform, Stockholm, Sweden
