Translation of the Fact Sheet: ‘Virtual Sky is a dynamic, multi-spectral light ceiling. The prototype in the laboratory of the Fraunhofer IAO covers an area of 34 m² and integrated a total of 34,560 LED with four different colours. Like this more than 16 million colours can be represented. They are grouped in a total of 240 (20×12) individually controllable squares (30 x 30 cm) that can be directed just like display pixels. Both temporally and spatially dynamic lighting is possible.