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an agreement on what metrics to use
The light-dosimeters’ key specifications are:
Spectral range: 380 nm – 780 nm
Intensity range: from 5 lx – 100k+ lx
Metrics used according to CIE S 026:2018
This data sheet summarises the light-dosimeters’ key features.
After the Velux Stiftung approved the funding for the project «Light exposure and health – light-dosimeter for the longterm recording and examination of biologically effective radiation and its effect on humans» (Project No. 1134), an interdisciplinary team from the Lucerne School of Engineering and Architecture, combining knowledge in light and lighting, electronics, product design, information technology and project management, started with the development of the light-dosimeter in early 2018. In addition, the project was  supported by three external partners:
Prof. Dr. Christian Cajochen, Head of Centre for Chronobiology, University Psychiatric Clinics Basel, Switzerland
Dr. Peter Blattner, Head of Optics Laboratory, Federal Institute of Metrology (METAS), Switzerland
Prof. Dr. med. Herbert Plischke, Light and Health, University of Applied Sciences Munich, Germany
People who contributed to the project from the Lucerne School of Engineering and Architecture:
Prof. Björn Schrader, Institute of Building Technology and Energy (IGE)
Prof. Othmar Schälli, Institute of Electrical Engineering (IET)
Dr. Giselher Wichmann, Institute of Electrical Engineering (IET)
Prof. Erich Styger, Institute of Electrical Engineering (IET)
Christian Di Battista, Institute of Electrical Engineering (IET)
Janine Stampfli, Institute of Building Technology and Energy (IGE)
Reto Häfliger, Institute of Building Technology and Energy (IGE)
Christoph Zumbühl, Institute of Electrical Engineering (IET)
Martin Friedli, Institute of Electrical Engineering (IET)
Said Ahsaine, Institute of Building Technology and Energy (IGE)
Stefan Ineichen, Institute of Building Technology and Energy (IGE)
Diego Rohner, Institute of Innovation and Technology Management (IIT)
Silvio Emmenegger, Institute of Electrical Engineering (IET)
Christian Jost, Institute of Electrical Engineering (IET)
Stefan Lustenberger, Mechanical Engineering and Energy Technology (IME)
David Huwyler, Institute of Electrical Engineering (IET)
Erny Niederberger, Institute of Electrical Engineering (IET)
Justin Rüssli-Kueh, Institute of Electrical Engineering (IET)
Tageslicht-Symposium 2022, Basel, Switzerland: «Wie viel Licht erhalten Sie pro Tag?» (15.6.2021)
Optica Webinar, Online: «Measuring Light, Color, Spectrum and Personalized Light Exposure Using Wearable Light Sensors» (11.2.2022)
Daylight Academy Annual Conference 2021, Online: «Light-Dosimeter» (2.12.2021)
CIE Midterm Conference 2021, Online: «The Light-Dosimeter – A New Device to Help Advance Research on the Non-visual Responses to Light» (27.9.2021)
Tageslicht-Symposium 2021, Online: «Licht-Dosimeter» (17.6.2021)
Swiss Lighting Forum, Basel, Switzerland: «Human Centric Lighting – Hohe Erwartungen wecken reicht nicht aus» (30.1.2020)
BioWi, Weimar, Germany: «Licht-Dosimeter – Aufzeichnung einer ‘Light History’ von Probanden» (12.11.2019)
EUROSHNET, Dresden, Germany: «Light dosimeter – recording an individual’s light history» (12.6.2019)
LICHT2018, Davos, Switzerland: «Light-Dosimeter 2.0 for Research» (11.9.2018)
Light & Building, Frankfurt, Germany: «HCL-Light-Dosimeter 2.0 – Zur Erfassung der zeitlichen Strahlenexposition von Probanden» (22.3.2018)
CIE Midterm Conference 2021, «The Light-Dosimeter – A New Device to Help Advance Research on the Non-visual Responses to Light» (27.9.2021)
Society for Light Treatment and Biological Rhythms 33rd Annual Meeting, Manchester, United Kingdom: «Usability and acceptability of corneal-plane a-opic dosimetry in a 24-hour field trial» (23-25.6.2022)
11. Symposium «Licht & Gesundheit», Online / Dortmund, Germany: «Light-Dosimeter – Ein neues Gerät zur Erforschung von nicht-visuellen Lichtwirkungen» (26./27.4.2022)
LICHT (1/2022): «Das Light-Dosimeter – Portables Gerät zur Erforschung nicht-visueller Lichtwirkungen» (S. 82-83)
HSLU News & Stories (12/2021): «Das Tageslicht – die grosse Unbekannte»
Baublatt (14/2021): «Vom Recht auf einen hellen Arbeitsplatz» (S. 8-10)
WirPlus (4/2021): «Lichtblicke für moderne ‘Höhlenmenschen’ – Es werde Licht im Homeoffice» (S. 18-21)