Round luminaire for ground installation, withstanding the passage of pedestrians and cars, available in three sizes, with adjustable optics in different configurations. Die-cast aluminium structure, treated with a double layer coating for high resistance to corrosion and AISI 316L stainless steel outer frame. Transparent, tempered, high resistance glass diffuser, with silkscreen border, fixed to the aluminium structure through a robotic gluing system. Power supply unit included in an external IP67 box to be housed in a box provided with a watertight M12 screw-connector. Recessed box, to be ordered separately.