Keglen by Jakob Lange: How a Museum Cone Became a Lamp Family

Keglen is Danish for "the cone", and that is the whole idea in one word. This piece follows how a pendant drawn for a museum in the dunes of Denmark's west coast, designed by Jakob Lange, BIG Ideas, became a family of four Louis Poulsen lamps, and what that origin means for the light each one gives.

A cone drawn for a museum in the dunes

The design began as a pendant Louis Poulsen created with BIG (Bjarke Ingels Group) for the Tirpitz Museum, a building sunk into the dunes of Denmark's west coast.

The pendant that came out of the project is a single geometric form: a cone, open at the bottom, with a soft curved insert where the cone meets the stem.

The designer is Jakob Lange, BIG Ideas. Keglen keeps to one strong shape and refines it until it works on its own.

The drop of water at the apex

What separates Keglen from any other conical shade is the detail at the top. A curved diffuser in injection-moulded polycarbonate wraps around the stem and seems to flow out of the cone like a drop of water caught as it falls.

The built-in LED sits behind that insert. Light passing through the diffuser is softened into a gentle halo around the top of the shade, while the cone itself presses the rest of the light downwards. Looking at the lamp from normal standing or sitting height, you see the glowing insert and the lit surface below, but not the source. That is why Louis Poulsen describes the light as glare-free.

The thinking is familiar to anyone who knows the company's history. Since Poul Henningsen's first shade systems, Louis Poulsen has built its catalogue on the same question of how light should fall on people and surfaces, and the usual answer has been to hide the source and direct a warm light down. Henningsen solved it with layered shades; our piece on how the PH three shade system works explains his version. Lange solves it with one cone and one diffuser. The vocabulary is modern, the aim is the same.

Spun aluminium in black or white

The pendant shade is spun aluminium, finished in matt black or matt white. The pendant hangs from a 4 m fabric cord with wire, coloured to match the shade, and comes with a canopy.

The two finishes change the character more than you might expect. Matt white blends into a pale ceiling and lets the opal insert glow against a light ground, so the lamp reads as a soft shape. Matt black turns it into a graphic mark, with the diffuser standing out as a bright ring at the top. In a room with dark joinery or black window frames, black tends to look intentional; in a white Scandinavian interior, white keeps the attention on the light rather than the object.

From one pendant to a family of four

After the museum, the cone was developed into a series. The Keglen Pendant comes in four diameters: Ø 175, Ø 250, Ø 400 and Ø 650. The Keglen Table Lamp, the Keglen Floor Lamp and the Keglen Wall Lamp carry the same shape and diffuser into other positions in a room. On these three, shade, stem and base or wall box are aluminium, and each has a switch with stepless dimming and a memory function.

The pendant is phase dimmable with standard leading- or trailing-edge dimmers and is offered in 2700 K or 3000 K versions. The table lamp comes in Dim-to-Warm 2700–2000 K or 3000 K, with a choice between a freestanding base and a pin-mount version (Pin ø40). On the floor lamp, white is Dim-to-Warm 2700–2000 K and black is 3000 K. The wall lamp is available in Dim-to-Warm 2700–2000 K or 3000 K in white, and 3000 K in black. All are rated IP20 for indoor use.

Living with Keglen: where each version works

The pendant sizes are the main styling decision. A single large cone, Ø 400 or Ø 650, makes a confident statement over a round dining table, where the downward light lands on the tabletop and the diffuser gives a soft glow at eye level. A run of smaller cones, Ø 175 or Ø 250, suits a kitchen island or a long counter, and because the source stays hidden they can hang comfortably low without dazzling anyone across the table. Note the weights before planning a ceiling fixing: the Ø 650 is 14.5 kg.

The table lamp throws a focused, warm pool of light downwards, which is useful for reading without lighting the whole room. It works on a desk, a bedside table or a sideboard, and two on a console make a symmetrical pair. The Dim-to-Warm version shifts towards a warmer tone as you dim it, which suits a bedroom in the evening.

The floor lamp is the discreet member of the family. The cone puts a glare-free pool of light beside a chair or sofa, the diffuser lifts a little glow so the lamp never feels harsh in a dark room, and the slim stem slips behind furniture. The wall lamp is the one to choose where floor space is scarce. Its shade rotates 45° to direct light up or down, and a small opening at the top releases a gentle upward glow, so it can replace a bedside table lamp, wash a wall with light in the evening or flank a mirror in a narrow hallway.

Why the cone still holds up

Many contemporary lamps lean on novelty. Keglen does the opposite: it takes the plainest of geometric forms and adds a single detail that solves the glare problem and gives the lamp its character. That restraint is what lets one shape move from a museum to a kitchen, a bedroom wall and a reading corner without looking out of place in any of them.

If you are choosing one, start with where the light needs to land: on a table, a page or a wall. The cone will do the rest. See the full Louis Poulsen collection to place Keglen alongside the designs that came before it.