| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 03042 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Applications of Optics and Photonics | |
| DOI | https://doi.org/10.1051/epjconf/202533503042 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533503042
Classified
Safe and effective UVB module for integration in office luminaires to support Vitamin D production
Signify Research, Lighting Technologies, High Tech Campus Building 7, 5656 AE Eindhoven, The Netherlands
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 22 September 2025
Abstract
Exposure of the human skin to sunlight is essential for Vitamin D production. Due to our modern indoor lifestyle an increasing part of the population shows insufficient Vitamin D levels, especially in wintertime. Exposure to artificial UVB radiation can help in maintaining a sufficient Vitamin D level. The provided dose should be high enough to be effective, but low enough not to cause damage to skin or eyes. We designed a UVB module for integration in office luminaires that provides a very low UVB irradiance level that leads to an effective dose in a full working day. Ideally, the intensity distribution for a ceiling-mounted UVB module provides a uniform irradiance level on the face and hands of a sitting person. The final design is a balance between UVB LED availability, optical material use, manufacturing considerations, and required light distribution.
© The Authors, published by EDP Sciences, 2025
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