Juergen P. Weisshaar and Volker Schumacher
Jürgen P. Weißhaar
Technical Expert of Illumination acc. to BGG 917.
Official Expert and Consultant of lighting techniques and photometry
Visiting Lecturer for lighting and illumination engineering at the University of Applied Science, Isny/Germany since 2007
Visiting Lecturer for lighting engineering at the University of Applied Science, Ravensburg-Weingarten/Germany since 2008