On-ground luminaire for light from a very low mounting height. The asymmetrical flat beam light distribution is suitable for glare-free illumination of ground surfaces even far ahead of where the luminaire is installed. Luminaires for providing spatial illumination of driveways and wide footpaths or for illuminating the borders of square-like areas. These luminaires are characterised by a robust design made of cast aluminium and by cost-effective and durable LED technology.