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Dyson engineer testing light

The engineering story

Fluorescent lighting is flawed. LEDs can be misused.

Commercial lighting largely relies on inefficient, costly fluorescent bulbs or the ineffective use of multiple LEDs. Light is spilled and wasted in all directions.

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LEDs

LEDs can last a lifetime. But they’re not cool enough.

Lighting technology typically means LEDs can’t last as long as they’re able to. Not cooling them properly leads to overheating, which damages brightness and longevity. Using multiple, smaller LEDs isn’t the answer either. Quantity doesn’t make for quality.

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Laptop computer parts

Finding coolness, from the inside out.

We started with the LED itself rather than its output. Like any semiconductor, LEDs need proper cooling to optimize their performance. So we reapplied the cooling technology used in satellites in the 1960s, and the heat sinks used ubiquitously to cool fridges and computers.

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Laboratory flasks on scales

Heat pipe technology effectively dissipates heat.

Getting heat away from the LEDs quickly, was key. Heat pipes use a small amount of water to spread heat. We used just a single drop in each vacuum-sealed copper tube. Copper worked best, because it conducts heat so well, while the vacuum reduces the water’s boiling point.

PLAY

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Heat escape illustration

Continuous evaporation and condensation keeps the LEDs cool.

The difference in pressure in the vacuum means the vapour evaporates and moves along the tube. When it cools via 37 aluminium fins, it condenses, before being drawn back to the LEDs via capillary action along a copper wick. The cycle then repeats in a continuous loop.

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 Cu-Beam Duo light parts

Accurate control. Engineered from scratch.

The full, flexible control of the two high-power LEDs is managed by a custom-built driver. The mother power board controls everything, from the ratio of up and down-light, to dealing with voltage fluctuations. A robust and reliable solution needed extensive testing. The surge handling, for example, went through 21,900 cycles.

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Engineer sketch

Custom-engineered. For precise up and down-light.

The efficient distribution of light also required the right optics. Through rigorous design, analysis, and prototyping, including minute changes to geometry and texture, the lenses we developed get the best from the LEDs. Combined with Ricochet™ technology, no light is wasted.

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 Cu-Beam Duo light on white

The result

Cu-Beam Duo light.

Cooled by Heat pipe technology, two high-power LEDs project precision light in both directions. Fully adjustable to fulfil any task, Cu-Beam Duo light can maintain LED longevity, use after use.

There’s no other light like it. 

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Cu-Beam Up light hanging from ceiling

Dyson Cu-Beam Up lighting logo

An ultra-wide distribution of powerful up-light.

Heat pipe technology Cools the LED to sustain brightness for up to 180,000 hours¹
Weight 2.9kg
Output One LED provides 7800 lumens (at 4000K)

An ultra-wide distribution of powerful up-light.

Heat pipe technology Cools the LED to sustain brightness for up to 180,000 hours¹
Weight 2.9kg
Output One LED provides 7800 lumens (at 4000K)

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Cu-Beam Down light hanging from ceiling

Dyson Cu-Beam Down lighting logo

Powerful, focused down-light. From one LED.

Heat pipe technology Cools the LED to sustain brightness for up to 180,000 hours¹
Weight 2.9kg
Output One LED provides 5350 lumens

Powerful, focused down-light. From one LED.

Heat pipe technology Cools the LED to sustain brightness for up to 180,000 hours¹
Weight 2.9kg
Output One LED provides 5350 lumens

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Next

Cu-Beam Duo light at work

Podium of Dyson products with lighting overhead

Dyson technology for business.

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