Wall luminaires are able to take on a wide range of functions. Wall luminaires in the form of ceiling washlights 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 wall luminaires 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. Wall luminaires as floor washlights safely and reliably illuminate circulation routes. Some wall luminaires have both upward and downward light emission and create magical grazing light, which is ideal for restaurants or hotels for example.