Lunaire can be used as either a wall or ceiling light. The lighting effect is reminiscent of the phenomenon produced by an eclipse of the moon.
A smaller front disk containing the light source is set inside a large concave aluminium diffuser. Two different effects are possible depending on how the small disk is positioned with respect to the diffuser: back lighting when the front disk is closed, in other words pushed towards the wall, or from inside the diffuser when the disc is pulled forward.
Simply pulling or pushing the rod on the front of the disk immediately changes the lighting effect to suit the mood.