| 1980-1988 Employment at Franke Optik/Gießen – Affiliated company of Oldelft/Delft Netherlands - Development of thin films for laser rangefinder, thermal imaging - Works manager, assistant general manager 1988- Professor at the University of Applied Science Gelsenkirchen - Subjects: Physics, Laseroptics, Thin Films 1988- Consulting: 1) Sale development technical customer consulting for coatings in cooperation with CERAC/USA 2) Introduction of new technologies in small and medium-sized businesses for economic plans of the federal state of North Rhine-Westphalia 3) Quality management with ISO-certification for job shop coaters 2000- Acting partner in the Prof. Feierabend GmbH - Technical consulting in coating-processes Miscellaneous - Active member of OSA (Optical Society of America) DPG (Deutsche Physikalische Gesellschaft) - Publications and lectures in the field of: Solid state physics, thin film technology | 
