Organic llght emitting diodes (OLED) on flexible substrates offer unique scopes for luminaire designs. Additionally, they can be quasi-transparent when switched off. Next to their appearance, another aspect is of importance: the substrate they are processed on – like e.g. very thin flexible glass, metal- and plastic foils. In the last years the Fraunhofer Research Institution for Organics, Materials and Electronic Devices COMEDD – well established as the center of the European OLED rese...