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Design Icon: PH 5 Pendant Light

The PH 5 Pendant Light by Louis Poulsen is not only one of the most celebrated designs by Poul Henningsen, but one of the most celebrated light designs of the 20th century. 

The Story Behind the PH 5 Pendant


Poul Henningsen (1894–1967) was a Danish designer, architect, and writer whose childhood experiences with gas lighting, which created warm atmospheric illumination, sparked his early interest in light design.


He didn’t like the harsh, unfiltered glare of early electric bulbs and found their illumination stark and uncomfortable.


In the 1920s, he began experimenting with multi-shade systems to create soft, evenly diffused light that was warm and inviting. His main goal was to improve lighting quality by controlling glare and directing light effectively.

In 1924, he began collaborating with the Danish lighting company Louis Poulsen, leading to a series of ground breaking and unique designs.


This collaboration resulted in the PH system, an innovative approach to lighting that balanced function and aesthetics.


This work laid the foundation for his masterpiece, the PH 5 Pendant Lamp.


Portrait image of the designer Poul Henningsen with a PH5  pendant

How the PH Lamp works


The PH system is based on a mathematical approach to controlling light diffusion. The signature three-shade design that unites the collection directs light downwards and sideways, eliminating glare while creating ambient illumination.


It was first introduced in 1925 at an international exhibition in Paris, where it won a gold medal.

The PH 5 Pendant Light: A design classic


Designed in 1958, The PH lamp was an evolution of his earlier multi-shade system. Designed for the Langelinie Pavilion in Copenhagen.


Its name comes from the 50 cm diameter of its main shade.


It was created to adapt to changing light sources, so the optimal light quality was maintained, despite variations in bulb technology.


Its innovation comes from light diffusion. Multiple layered shades direct light both downward and laterally, which eliminates glare. Additionally, the red and blue reflectors help balance the yellow tones of incandescent bulbs, providing a more natural, warm glow.

Made from high-quality spun aluminium, it is also lightweight, and its rolled aluminium struts provide structural support whilst maintaining a sleek, minimalist aesthetic.


Complete with a matte painted interior that helps to optimise light diffusion and a textile-covered cord, the attention is in the detail for this lamp.


Where can I buy the PH 5 Pendant Light?


Still produced today, The PH 5 Pendant Light by Louis Poulsen is available from high-end retailers like Holloways of Ludlow.


Available in a wide range of modern colourways, from classic white to bold contemporary hues, you are sure to find just the pop of colour to suit your taste.

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