Poul Henningsen designed the three-shade system during 1925/1926. The first lights using the system were designed for an exhibition in Paris. His work with Louis Poulsen continued until his death in 1967. Throughout his life, PH sought to create glare-free lighting; aiming to direct light where it was most needed, and creating soft shadows while using incandescent bulbs as a light source. The four-shade system was launched in 1931 to create a fixture that could be mounted high up and serve as an alternative to the commonly used chandeliers. The PH four-shade fixture was designed to increase the amount of light emitted horizontally to provide greater illumination of walls and shelves than was possible using standard three-shade lights. It was removed from the Louis Poulsen standard range in the 1940s, but was redesigned in 1979 by Danish architects, Sophus Frandsen and Ebbe Christensen, for the Charlottenborg exhibition building in Copenhagen. To resolve the never ending glare problem, the two architects decided to add a small blue shade to the design. They also included a new surface with a more mattee, white painted shade, to achieve a more even, comfortable light, ideal for museums and exhibition rooms or as general lighting in rooms with high ceilings.

Features

• PH Collection
• Designed on principle of reflective three-shade system directing the majority of the light downwards
• Underside of shade is painted white
• Dimmable with a 0-10V or Phase dimmer (for LED)
• cULus Listed
• Available in White finish
• Available in Incandescent or LED lamp type
• Available in 3000K or 3000-1800K color temperature
• Available in 120V or 120-277V