Apply A19 of Alain richard for Disderot

With this Spotlight type elbow, Alain Richard declines the principle of a tube of different size that can settle on the wall or ceiling as arise. It ends with a specific type headlight bulb, of significant power softened by streaks on the surface. The tube takes the diameter of the bulb, Alain Richard then adapts his creations to the discoveries of his time. So the illusion that bright fire comes directly from the angled support is created. Editions Disderot circa 1967.