It is being propelled by the dramatic improvements in performance of solid state light sources. Solid state lighting is a fascinating research field which brought up the revolutionary breakthrough technology of inorganic LEDs during the last decade. These are now migrating into the general lighting field. A new development route is already identified with organic light emitting device in large area and nm-thin architectures being complementary to inorganic point sources. These sources offer completely new solutions in terms of design aspects not achievable with existing light sources. At the same time, their out-standing characteristics continue to improve and are expected to eclipse those of the most common light sources within a near future.