The Plexiglass from Leeuw & Vormgeving is an energy-efficient lamp that hides its light source, i.e. the bulb, to spread the light via transparent plexiglass rods. The plexiglass tubes when lit up become invisible to set the mood within the place. The plexiglass bounces the light back through its clear portion, while the matte part breaks out the light, glowing the lusterless tips of the rods to create a semi-sphere when it gets dark.
Via: Leeuw-vormgeving