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 Jake Dyson holding 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. The blanket of bright light can strain people’s eyes, causing avoidable discomfort.

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.

Laptop computer parts

Finding coolness, from the inside out.

We started with the LED itself rather than its output. Like any semiconductor, LEDs need properly cooling to optimise 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.

Watch the video Jake Dyson explains heat pipe technology

Heat pipe technology effectively dissipates heat.

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

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Heat pipe technology 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.

Prototype lenses

Custom-engineered lens. For precise down-light.

The efficient distribution of light also required the right optics. It's why we custom design, test and manufacture them all in-house. Through rigorous design, analysis, and prototyping, including minute changes to geometry and texture, the lenses we developed get the best from the LED.

Cu-Beam Down light on white

Cu-Beam Down light.

Cooled by Heat pipe technology, a single high-power LED projects powerful, precise light. Fully adjustable to fulfil any task, Cu-Beam Down light can maintain LED brightness for up to 180,000 hours.¹

Cu-Beam Duo light

Cu-Beam Duo logo

Fully flexible up and down-light.

Heat pipe technology Cools the LEDs to sustain brightness
Weight 3.2kg
Output Combined lumen output of 9400lm (at 4000K)

Fully flexible up and down-light.

Heat pipe technology Cools the LEDs to sustain brightness
Weight 3.2kg
Output Combined lumen output of 9400lm (at 4000K)

Cu-Beam Up light

Cu-Beam Up 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 at work.

Dyson lighting over a range of Dyson products

Dyson technology for business.

¹Calculated lifetime based on LED L70.

⁺High-power LEDs use a fraction of the energy of some conventional non-LED suspended lights.