The PH 4½-3½ from Louis Poulsen is a classic table lamp with a timeless design by Poul Henningsen. The reflections from the three screens spread over a logarithmic spiral and direct the majority of the light downward. The screens are made of opal glass which gives a soft and diffuse light. The table lamp is part of the three-shade family that Poul Henningsen designed in collaboration with Louis Poulsen between 1925-1926. Light source is not included.