Poul Henningsen ceiling lamp

The PH-4 ceiling lamp, designed by Poul Henningsen and produced in the 1920s by Louis Poulsen in Denmark, is a historically significant and exceptionally rare early example of modern lighting design. Bearing the stamped designation “PAT. APPL.”, this piece confirms its origin in the earliest production years, aligning it with Henningsen’s foundational explorations into scientifically informed, human-centric lighting.

The lamp exemplifies Henningsen’s pioneering three-shade system, a design innovation introduced in the 1920s that revolutionized lighting by eliminating glare and ensuring even light distribution. This system, developed through rigorous testing of light reflection and diffusion, remains a cornerstone of Scandinavian lighting design. In the PH-4, three proportionally scaled shades work together to shield the light source while gently guiding light downward and outward—creating both functional clarity and visual comfort.

Crafted primarily from copper, the shade structure has developed a richly textured patina over the past century. This natural aging process imbues the lamp with depth and character, and serves as a testament to its authenticity and longevity. The warm, oxidized copper finish contrasts beautifully with the central housing, which is nickel-plated and retains a cooler, reflective sheen—highlighting the interplay between the two metals.

The lamp’s height is adjustable, making it adaptable to different interior needs—from dining tables to larger rooms requiring suspended lighting. Measuring 40 cm in diameter and 32 cm in body height (approximately 15.7 x 12.6 inches), with an overall hanging length of 132 cm (approximately 52 inches), it maintains a substantial yet balanced presence in space.

Fitted with an E27 socket, the lamp supports modern light bulbs, allowing for flexible use while preserving its historical integrity. The fusion of Henningsen’s forward-thinking engineering and Louis Poulsen’s meticulous production makes this early edition of the PH-4 a highly desirable collector’s item.

Poul Henningsen (1894–1967), one of Denmark’s most influential lighting designers, was instrumental in redefining the relationship between light, material, and the human experience. His early work for Louis Poulsen—especially models like this PH-4—laid the groundwork for a design philosophy that continues to shape architectural lighting to this day.

This PH-4 model is not merely a lighting fixture but a museum-worthy example of early 20th-century design innovation—combining historical resonance, functional brilliance, and timeless aesthetic appeal.