There is a version with a white rim and a version with a black rim. Is the version with the white rim brighter because it is translucent (the whole lamp lights up in the pictures)?
The rim of this lamp is made of 2mm thick steel, thus light-impermeable. This ring has a distance of approx. 20mm to the ceiling, therefore the light goes under the lamp and between the ceiling and the lamp.
Mfg Daniel