Wall luminaires are able to adopt to a wide range of functions. In the form of ceiling washlights, they achieve ceiling illumination with high uniformity. In low rooms such as corridors, wall luminaires create a more spacious impression. In large rooms such as religious buildings, the light of ceiling washlights directed towards the ceiling or roof emphasises the prestigious effect of the architecture. They aim to photometrically optimise the light output ratio and light distribution. As such, these luminaires are predestined for economical indirect lighting. Wallwashers directed towards the floor provide safe illumination of circulation routes. Some wall luminaires have both upward and downward light emission and create magical grazing light, which is ideal for e.g. restaurants and hotels.