An accurate evaluation of daylight distribution through advanced fenestration systems (complex glazing, solar shading systems) requires the knowledge of their Bidirectional light Transmission (Reflection) Distribution Function BT(R)DF. An innovative equipment for the experimental assessment of these bi-directional functions has been developed, based on a digital imaging detection system. An extensive set of BTDF measurements was performed with this goniophotometer on Venetian blinds presenting curved slats with a mirror coating on the upper side.
François Maréchal, Paul Michael Stadler, Francesco Baldi, Luise Middelhauve
Marilyne Andersen, Sergi Aguacil Moreno, Nazanin Rezaei Oghazi, Thomas Bernard Paul Jusselme
Christophe Ballif, Alessandro Francesco Aldo Virtuani, Hugo James André Quest