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PH Glass Table Lamps
Poul Henningsen, 1927

Ø20 x H35,5 cm

Ø29,7 x H47,2 cm

Ø33 x H45 cm

Ø45 x H55 cm

The PH family of table lamps with 3 glass shades was born in the winter of 1925-26 for an exhibition in Copenhagen. In 1926, Poul Henningsen said about this new system: "The real innovation of the PH luminaire is that it produces glare-free as well as economical lighting.

It is fairly easy to create glare-free lighting (indirect light or with a thick shade) if a portion of the light can be wasted. It is also easy to create highly efficient lighting if you ignore the fact that it is highly irritating to the eyes. But achieving economical and glare-free lighting is an art.

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PH2/1 Glass Table Lamp

The PH2/1 Table Lamp is part of the PH family of lamps with 3 shades. The first number of its name indicates that the diameter of the upper shade is 20cm, the second that the ratio is 3/2/1. 

The PH2/1 is available as a suspension lamp, table lamp and wall lamp.

Dimensions shade Ø20cm, base Ø12cm, height 35.5cm

Materials Mouth-blown white opal glass. Black metallised or High lustre chrome plated, machined brass.

Mounting Vinyl cord with plug. Cable length: 1.75m. Light control: In-line switch on cord.

Weight 1.5 kg

Light source 1 x QT-ax 14 G9

Class Ingress protection IP20. Electric shock protection II w/o ground.

PH2/1 Glass / Chrome

PH2/1 Glass / Black

PH2/1 Glass / Brass

PH3/2 Glass Table Lamp

The PH3/2 Table Lamp is part of the PH family of lamps with 3 shades, born during the winter of 1925-26 for an exhibition in Copenhagen. For the PH3/2 Table Lamp, the first number indicates that the diameter of the upper shade is 30cm, and the second that the size ratio between the 3 shades is 3/2/1.

Dimensions Ø 29.7 cm. Height 47.2 cm. 

Materials Shades: Mouth-blown white opal glass. Top plate: Black chrome plated, metallic brass or high lustre chrome plated, spun brass. Base & Stem: Black chrome plated or high lustre chrome plated, brass.

Mounting Cable type: Plastic cord with plug. Cable length: 2.1m. Light control: In-line switch on cord.

Weight Min: 2.7 kg Max: 3.0 kg

Light source 1 x E14

Class Ingress protection IP20. Electric shock protection II w/o ground.

PH3/2 Glass / Chrome

PH3/2 Glass / Black

PH3/2 Glass / Brass

PH3½-2½ Glass Table Lamp

Designed over 80 years ago, the PH 3½-2½ Table Lamp has not aged a bit. In 2017, Louis Poulsen introduced a new version of the lamp, featuring an opal glass shade and available in 3 base versions - high gloss chrome, metallic black and metallic brass.

The PH3½-2½ Glass Table Lamp operates on Poul Henningsen's classic 3-shade system, which diffuses a multi-directional, non-glare and very comfortable light.

Dimensions Ø33 x H45 cm

Finishes white opal glass shade, high gloss chrome or black metal frame

Mounting plastic cord with plug 2.5 m – switch on the cord

Weight 2.5 kg

Light source E14

Class Ingress protection IP20. Electric shock protection II w/o ground

PH3½-2½ Glass / Chrome

PH3½-2½ Glass / Black

PH3½-2½ Glass / Brass

PH4½-3½ Glass Table Lamp

The 4½-3½ Glass Table Lamp is based on an approximately 45 cm shade, but uses the low shades of the 3½ . These "hybrid" designs were introduced because of the desire to hang pendants at lower heights. The system was also used for floor, table and wall lamps. 

The PH 4½-3½ Glass Lamp in its current form was introduced in 1990.

Dimensions Ø45 x H55 cm

Material mouth-blown white opal glass – high lustre chrome plated, spun brass

Mounting cord with plug 2.7 m – switch on lamp stand.

Weight 9.9 kg

Light source 1 x E27

Class Ingress protection IP20. Electric shock protection II w/o ground

PH4½-3½ Glass / Chrome

About PH Glass Table Lamps

As early as 1925, Poul Henningsen came up with the idea of using a logarithmic spiral to control the brightness and shade of the light in the fixture, with each shade decreasing the amount of light emitted equally with distance from the bulb.

Les transitions de luminosité entre chaque abat-jour étaient harmoniques, la taille relative des abat-jour et leur positionnement étaient déterminés par le besoin de réduire l’éclat, la disposition de la lumière et les besoins en distribution lumineuse, en fonction de certains principes remarquablement simples. 

The transitions in brightness between each shade were harmonic, the relative size of the shades and their positioning were determined by the need to reduce glare, the arrangement of the light and the need for light distribution, according to some remarkably simple principles.

The first lights were all made with metal shades, then Poul Henningsen developed a variant in opal glass with a sandblasted bottom. The shades let 12% of the light through and contributed to the ambient lighting of the room, while most of the light was reflected downwards.

For the suspended lamps, the sizes of the 3 shades respected a ratio of about 3/2/1. For table lamps, the lower shades had to be smaller. This is how the ratio PH 2/1 and PH 3/2 were born.

Poul Henningsen

Né à Copenhague, Poul Henningsen avait pour mère la célèbre actrice danoise Agnes Henningsen. Il n’a jamais obtenu son diplôme d’architecte, mais a étudié à l’école technique de Frederiksberg (Danemark) de 1911 à 1914, puis au Technical College de Copenhague (1914-1917).

Il a commencé à pratiquer l'architecture traditionnelle fonctionnaliste, mais au fil des ans, ses intérêts professionnels ont évolué pour se concentrer principalement sur l'éclairage, qui est ce qui le rend le plus célèbre. Il a également étendu son domaine d’activité à des domaines d’écriture, devenant journaliste et auteur. Pendant une courte période au début de la Seconde Guerre mondiale, il a été l’architecte en chef des jardins de Tivoli à Copenhague. Mais comme beaucoup d'autres créatifs, il a été contraint de fuir le Danemark pendant l'occupation allemande, puis est rapidement devenu un élément vital de la colonie danoise d'artistes vivant en Suède.

Sa longue collaboration avec Louis Poulsen a commencé en 1925 et a duré jusqu'à sa mort. À ce jour, Louis Poulsen bénéficie toujours de son génie. Poul Henningsen était également le premier rédacteur en chef du magazine d'entreprise «NYT». Le PDG de Louis Poulsen à l’époque, Sophus Kaastrup-Olsen, a offert le magazine à PH parce qu’il avait été licencié du journal danois pour lequel il travaillait (ses opinions étaient trop radicales).

Le travail de pionnier de Poul Henningsen sur les relations entre les structures lumineuses, les ombres, l’éblouissement et la reproduction des couleurs, comparé au besoin de lumière de l’homme, reste le fondement des théories lumineuses encore pratiquées par Louis Poulsen.