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A shining example of long-lasting design: the PH5

Gerrit Terstiege

The design of luminaires undoubtedly offers a substantial level of freedom. From a technical perspective, the relatively straightforward task of directing light in a fairly focused manner does not require great complexity. However, it is precisely this creative freedom that has led to decades of designs featuring an abundance of extravagant, experimental, or unnecessarily dynamic luminaires. Major trade fairs such as Euroluce in Milan or Light+Building in Frankfurt also regularly encourage ‘lighting trends’ to be discussed as ostensibly relevant phenomena, when in fact what should be guiding design and production processes is quite the opposite, that is, long-term thinking and design. A luminaire such as the PH5 from the Danish manufacturer Louis Poulsen, on the other hand, is an example of a truly long-lasting product, given that its origins date back to 1925. Yet its first intended use, the illumination of a large hall, was hardly ideal. Historical photos show long rows of PH5 luminaires in the Forum Copenhagen, which opened in February 1926 with an automobile exhibition.
Preparation for a bicycle race in Forum Copenhagen. Photo: public domain

For other events too, for instance a bicycle race in that hall, the lights mounted metres high were presumably only of limited value. Why? Their design, comprising three staggered shades, does not allow large areas to be lit, instead it is more suited towards offering pleasant, glare-free light in living areas, such as above dining tables. This was the key innovation and principal design concept of Poul Henningsen (1894–1967), whose initials can still be found on his PH lamp series today. At the age of 16, Henningsen already found recognition for an innovative bicycle concept. He did not complete his architecture studies at Copenhagen Technical College and the Technical University of Denmark. He sought to make a name for himself as an author and inventor, instead. As a journalist, he was quick to understand the social impact of architectural designs and criticised, for example, the short-term thinking in Copenhagen’s urban planning.

When considering his many lighting designs, most of which feature a concentric structure of staggered shades, not every model may be convincing from today’s perspective. In some of his models, the idea of shading using cascades of sheet metal is taken to almost absurd extremes with their particularly expansive and sculptural qualities. His Paris Lamp, which was presented at a trade fair in the French capital in 1925, demonstrates precisely what makes his PH5 so ideal as a living room lamp, yet without the same understated calm and elegance. A pendant lamp in particular is not in use for much of the day—especially when daylight makes switching it on unnecessary. And this is where the image of the ‘English butler’ that is frequently used in connection with Braun’s design from 1955 comes into play, maintaining a discreet background presence when not needed. The PH5 is a brilliant example of this too. Nevertheless, a device that is not switched on remains visible. Therefore, the outer form of a product still performs a functional role when it is not in use. This is clearly illustrated by photos of the lamp above the Vitsœ 720 dining table in the home of Rams.

The PH5 in the Rams House above the Vitsœ 720 dining table.
Photo: Cassandra Peters © rams foundation

It has been in use there for decades, and replacing it with a fashionable, contemporary lighting design seems totally inconceivable. The conscious decision to opt instead for high-quality, durable products in the Rams household is reflected in numerous aspects. Moreover, the openness with which Dieter and Ingeborg Rams have allowed their private living spaces to be photographed over many years has meant that their approach to durable design has long been regarded as exemplary—worldwide. Anyone wishing to buy a PH5 for home use can still find a wide range of colour options on offer from Louis Poulsen. Alternatively, well-preserved second-hand models can be sourced from dealers such as Yasmin and Frank Mevissen. Incidentally, the name of their vintage design shop, „Achtgrad”, is a reference to the Braun audio 308 system designed by Dieter Rams and produced from 1973 onwards, which has a control panel that is tilted at an angle of eight degrees. But that’s another story.

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