In a table lamp version, Poul Henningsen's 3½-3 design brings a dash of primary color or crisp white to his ingenious 3-shade lighting system derived from a logarithmic spiral and affording even and glare-free illumination . Each of the aluminum shades has a white-painted rolled edge, accentuating the familiar triple-level profile, and a reflective white interior that directs most of the illumination gently downwards.