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Dyson Cu-Beam Down logo

Cu-Beam Down suspended light

Powerful, focused light. From one LED. In a single fixture.

Other colors available, contact us for more details.

• Heat pipe technology maintains LED brightness

• A custom lens focuses 5350 lumens. From one LED.

• Custom-built driver controls the light's functions


Key features

Illustrating light path of Dyson Cu-Beam down over desks

Fully-adjustable down-light, precisely where you need it.

Focuses a single light source to create a targeted pyramid of dimmable down-light.

Fluorescent lighting is flawed. LEDs can underperform.

Commercial lighting largely relies on inefficent, costly fluorescent bulbs or the ineffective use of multiple LEDs. The Cu-Beam Down light provides focused light.

Key technology

  • Heat pipe technology maintains LED brightness

    Cools the LED to sustain brightness for up to 180,000 hours.¹

  • A custom lens focuses 5350 lumens. From one LED.

    The custom-engineered lens maximizes the single high-power LED, for powerful illumination, whatever the task.

  • High efficacy

    A custom-engineered lens combined with effective cooling means that each fixture runs at 94lm/W (at 4000K).

Additional features

  • No glare

    By putting the light precisely where it needs to be, Cu-Beam Down lights prevent wasted light in all directions, and reduce eye strain.

  • No flicker

    Custom-built drivers control the lights' functions. They manage power, voltage fluctuations and the ratio of down light.

  • More light

    High-power single LED and a custom-engineered lens provide powerful light than can illuminate a wide area.

  • Powerful down-lighting

    A single LED projects 5350 fixture lumens (at 4000K). Heat pipe technology keeps the LED cool to sustain its brightness for up to 180,000 hours.¹

  • Compact and lightweight

    Cu-Beam Down light measures 28.3 in (720 mm) across, weighing just 2.9kg, or 6.4lbs. The unit 'floats' in space for minimal spatial intrusion.

  • Surpasses office lighting standards

    Distributes up to 674lx (at 4000K) evenly over an area of 10.5ft x 5.3ft (3.2m x 1.6m) when mounted at 4.3ft (1.3m) above the task area.


    • Color temperature

      3000k / 4000k

    • Light source

      Chip on board LED

    • Rated power


    • CRI

      80 minimum

    • Light output

      5120 / 5350 lm

    • Luminous efficacy

      90 / 94 lm/w

    • LED life time

      180,000 hrs¹

    • Beam angle

      111° x 78°

    • Standby power consumption


    • Input voltage


    • Frequency


    • Weight

      6.4 lbs (2.9 kg)

    • Height

      3.5 in (89 mm)

    • Width

      28.3 in (720 mm)

    • Depth

      5.1 in (130 mm)

  • Cu-Beam Down side view

Useful documents

Frequently asked questions

What is the best way to clean Cu-Beam Down?

Use a microfiber cloth, or solvent- and moisture-free compressed air canister, to clean the appliance. Always ensure the appliance is turned off before any cleaning. 

Can I use the Cu-Beam Down outside?

The appliance is designed for dry, indoor locations only. 

Operating environment range 0°C (32°F) to 40°C (104°F) and 10-95% RH non-condensing.

Which dimmer products is Cu-Beam Down compatible with?

This appliance is only compatible with DALI-compliant dimmer products.

Dyson Cu-Beam Down logo
Dyson Cu-beam down light

Cu-Beam Down suspended light


Choose your model

  • Dyson Cu-Beam Down suspended light

    Powerful, focused light. From one LED. In a single fixture.

    • Dimensions: H 3.5 in (89 mm) x W 28.3 in (720 mm) x D 5.1 in (130 mm)


  • Dyson Cu-Beam Duo suspended light

    Powerful and precise. The only fully flexible up and down-light.

    • Dimensions: H 3.8 in (97 mm) x W 28.5 in (725 mm) x D 8.1 in (206 mm)


  • Dyson Cu-Beam Up suspended light

    An ultra-wide distribution of powerful up-light.

    • Dimensions: H 2.3 in (60 mm) x W 28.3 in (720 mm) x D 5.1 in (130 mm)


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Why choose Dyson for business

  • 1 Calculated lifetime based on LED L70.