Daylighting Laboratory

Contact: Prof. J.-L. Scartezzini

Through the use of daylighting systems in connection with artificial lighting and quality control tools a substantial amount of electrical energy can be saved inside a building. This approach, however, influences the architectural aspects of a building. It is therefore of major importance that architects have access to planning and design tools for such daylighting systems. This is the reason why the LESO-PB has set up a daylighting laboratory with sophisticated equipment.

The daylighting laboratory includes:

as well as

  • a visual comfort meter (high-definition camera, image digitiser, endo-scopic objective, visual glare index analysis software)
  • a set of precision photo-meters (illuminance measurements inside scale models)

These tools allow, among others, the following operations:

  • daylight factor measurements inside scale models
  • visual glare index evaluation under special lighting conditions
  • visualisation of the luminous conditions perceived inside the premises

 PhD theses on this subject


  • Analysis of error sources within daylighting physical and virtual models of buildings / Thanachareonkit, A.; Robinson, D.; Scartezzini, J.-L. – Presented at CISBAT 2005, Lausanne, September 28
  • Implementing the Partial Daylight Factor Method under a Scanning Sky Simulator / Michel, L.; Scartezzini, J.-L. – In Solar Energy, Elsevier Science Ltd, vol. 72, num. 6 (2002), p. 473-492
  • Laboratoire de lumière naturelle, Rapport OFEN, Scartezzini J.-L., Michel L., Roecker C., Rhyner R., 1994