Gizmodo describes them perfectly: A small brass pendant filled with eight high-power LEDs hangs from the ceiling. The light source shines upward through a fresnel lens. The refracted projection creates a series of overlapping circular patterns on the ceiling, giving the appearance of an elaborate chandelier overhead. The new chandeliers are efficient, they collect very little dust, and in the event of a disastrous crash, like in The Phantom of the Opera, they're practically harmless.
March 27, 2012
RSA House chandeliers by Troika
These are spectacular. (Thank you, Bradley!)