Back to the Dyson Lightcycle
US Website here (will be updated to Australia soon)
I have been using it now for about 18-hours. From last night and until I wrote this review today. Dyson will allow me to use if for an extended period (as reviewers should) and I will update this review as necessary.
In the box
- A substantial base that allows 360° rotation of the upright arm
- The ‘crane-like’ 3-axis glide upright arm/pully mechanism with a USB-C port for USB-PD 2.0 5V/1.5A (7.5W) charging
- A 24V/1.25A 30W power supply with a long cable
- The light arm with six CSYS LEDs, a location sensor, BT and tonnes of electronics including a 32-bit processor
Assembly is simple and requires no tools. You can mount the light arm left or right. It is a precision device with effortless adjustment.
- Download the Dyson Link app for Android (tested) or iOS (same as for its other products)
- Pair the Dyson Lifecycle light to the phone by BT (and by inference the internet for firmware and weather/light updates
- Input your age to help it compensate for Arcus Senilis (yellowing of the eye’s lens and cornea)
- Activate IR motion detection (if you wish – I found it handy as it turns off if I am away)
- Activate schedules (if you wish) to turn the light on/off automatically. As the light lasts 60 years and uses little power (up to 10W at most – typically below 5W), you can leave it on for a long time!
There are also a few pre-sets that are handy
- Study mode exceeds recommended light levels for studying while adjusting colour temperature over the day from 3,600 to 5,200°K. So, you work or study under the right type of light for the time of day.
- Relax mode provides light at the warm end of the spectrum (2,900 Kelvin), with low intensity, which is still bright enough for reading. No blue light means you are ready to sleep too.
- Precision mode improves visual acuity by using high-intensity light with a cooler (4,600° K) temperature. Importantly it achieves a high colour rendering index of over 90Ra displaying colours very close to daylight.
- The Boost mode is for tasks that need maximum brightness for up to 20 minutes.
- There are wake-up and sleep modes. The latter deactivates the motion sensor and lower light intensity and colour.
That 60-year light claim
The Dyson claim (like any other light manufacturer) is based on LED-life calculation using L70 measurement, IEC 62717. What that means is 70% output (700 lumens) for 8 hours a day (about 175,000 hours).
The problem with typical LEDs is that they generate a lot of heat. A LED downlight (not cooled) has a life of around ten years (50,000 hours) with colours getting cooler (bluer) as time goes on.
Dyson’s problem was two-fold. Harness LED for energy efficiency but get over the heat/colour consistency issues.
It uses a vapour chamber principle that you find in some flagship smartphones. A vacuum-sealed copper tube draws heat away. Inside, a drop of water evaporates, dissipating heat along the pipe as it condenses, before returning to the LEDs by capillary action. It provides a non-stop, energy-free cooling cycle. And. It is damned effective – you can touch the LED head, and it is cool!
The CSYS LED is custom made for Dyson and first seen in its commercial lighting and later its original task lamp. This is a new version with even longer life.
Light tacking (colour and intensity) is all well and good if the LED can deliver the same colour and brightness over its lifetime.
Dyson can make that claim – and I don’t think anyone will be around in 60 years to dispute it.
Using the Dyson Lightcycle
I have used it for about four hours at night and eight hours during the day. Over time I will see how it goes with cloudy days etc. I can say that it provides perfect, glare-free, easy-on-the-eye, light at all times.
At night it automatically warms the light temperature reducing blue light. That is great because when I go to bed, my melatonin levels are high enough to get to sleep quickly. Since talking to Associate Professor Sean Cain, I have also changed my bedside and kitchen lights to LED Warm white.
It is now afternoon, and the light is very different from the night. In the morning it started bright and cool and over time has lowered its intensity to match the outside ambient light. When I walk outside to the balcony there is no disconcerting jarring – the light inside is as natural as outside.
Moving from the Superlux CFL to the Dyson Lifecyle sees an immediate, less aggressive but no less functional light.
I forgot to mention that you can tap the top to turn it on and swipe to increase/decrease light levels.