Lighting fixture Ø500, made in turned copperplate elements, the inner structure is a frame realised by cast brass elements. The finishing of the surfaces is made with burnished and oven-dried acrylic varnish. The semi-sphere is in polymethyl methacrylate (PMMA) opal or transparent. Internally there is an asymmetrical reflector, for a better distribution of light towards the ground. The versions complete of a flat glasses (VEP) to close the optic compartment, are conform to the most demanding normative against the light pollution, with a Imax Gamma 90° equal to zero (cd/klm). Installation by suspension clutch BP.