The PH 4½ family is designed on the principle of a reflecting multi-shade system. It produces a harmonious and glare-free light. The base and stem are chrome-plated and the shade is in matt white opal glass.
Poul Henningsen is an integral figure in lighting design and architecture, whose revolutionary views on the utilisation of light in the home led to a number of ground-breaking designs.
Collaborating with Louis Poulsen in 1924/25, Henningsen produced the first version of the seminal PH multi-shade lamp, a classic piece of modern lighting design, featuring separate elements which are shaped and assembled in such a way that the bulb is covered and light is directed downward, creating a soft, diffused effect.
Henningsen was aware of the importance of light in urban life, but sought a way to subdue the harshness of electric light while harnessing its mood-altering properties, believing that the aesthetic of an interior is highly dependent on how light is used.