PH 3½-2½ Table Lamp by Louis Poulsen is a glass-shade variant in Poul Henningsen's three-shade family, the design of which dates to 1928 — two years after the original system was first exhibited. Henningsen's objective with the glass version was to introduce translucency into the shade system: where metal shades redirect and block light, opal glass shades allow a portion of light to pass through, creating a softer, more luminous appearance while retaining the glare-free geometry of the logarithmic spiral system. The PH 3½-2½ Table Lamp was among the earliest productions to achieve this, and the white opal glass remains its defining material character.

As a table lamp, the PH 3½-2½ provides warm, diffuse ambient light at surface level — making it equally at home on a bedside table, a sideboard, a living-room console or a hotel room desk. The three glass shades stack concentrically, each at the angle Henningsen's calculations prescribed, and together they produce a lamp that glows from within rather than projecting a directional beam. The result is one of the warmest and most comfortable table-lamp light sources in the Louis Poulsen catalogue.

Interior designers and architects specifying table lighting for residential or hospitality projects will find the PH 3½-2½ Table DWG drawing and CAD block useful for surface coordination, scale assessment and lighting-plan documentation. The 3D model and Revit family support BIM placement and IFC documentation. A reliable and historically significant specification for projects where PH glass table lighting is the brief.

Available as a 2D DWG drawing, 3D model, Revit file and IFC file.