Ceiling washlights have an asymmetric light distribution and emit light upwards onto horizontal surfaces. The ceiling surface is illuminated evenly and over a large area. On ceiling washlights, the section of the ceiling to be illuminated can be partly clipped along the luminaire's main axis with the help of infinitely adjustable cut-off shields. Uplights differentiate themselves from ceiling washlights by their different reflector geometry, altered light distribution, and higher light output ratio