A BREAKTHROUGH agreement between two major manufacturers is set make daylight-matching human-centric lighting available to a wide audience.
Casambi, the pioneer in wireless lighting controls based on Bluetooth, has teamed up with LED technology specialist Seoul Semiconductor to provide precision control of LED lights that match the spectrum of sunlight.
Casambi’s wireless control technology can now be used with Seoul Semiconductor’s innovative SunLike Series LEDs – the first LED light source to closely match the spectrum of sunlight.
‘Human-centric lighting’ describes lighting that is designed to work with the human body’s natural rhythms.
It relies on the well-established fact that the human eye detects the presence of a particular wavelength of blue light in the spectrum that makes up sunlight, and uses this to judge what time of day it is.
In this way, light helps regulate our sleep–wake cycles and other bodily rhythms, and has a significant impact on our mood and wellbeing.
Human-centric lighting harnesses this effect by adjusting its brightness and colour temperature during the day to mimic natural light.
But not all so-called human-centric solutions are the same. Even if they look the same to the eye, different white light sources contain different amounts of the crucial blue wavelength that triggers the body’s response.
Most solutions described as human-centric do not have a spectrum that resembles that of real sunlight, so they end up providing too much or too little blue.
The Lux Award-winning SunLike Series LEDs are the first LEDs to be closely matched to real sunlight, so they provide a similar biological stimulus, says the company.
The company this was confirmed in a recent study by Dr Octavio L. Perez, adjunct researcher in integrative lighting at Mount Sinai Hospital in New York.
The study, due to be published soon, looked at the non-visual effects of light on the body, and found that the SunLike Series LEDs provide up to 21 per cent more ‘circadian stimulus’ than conventional LEDs at a colour temperature of 4000K, and the same stimulus as daylight at 6500K.
Another study by scientists at the University of Basel in Switzerland found that LED lights with a spectrum close to sunlight could have a very different effect on human circadian rhythms to conventional LEDs, with beneficial effects on health and wellbeing.
Professor Christian Cajochen and his team found that people who spent time under LED lights with a spectrum close to sunlight were more comfortable, more alert, had better moods and slept better, compared to those who spent time under conventional LED lights.
Customers can now use Casambi’s Bluetooth-based wireless control system and app with products containing SunLike Series LEDs to precisely adjust the level of light, in the knowledge that the spectrum reflects real sunlight.
Casambi allows lights to be controlled by a timer, or by a huge variety of presence/motion sensors and ambient daylight detection sensors. It can control luminaires that shift in colour temperature over a very wide range, and designers have the freedom to configure dimming, and create scenes or animations to suit the particular application.
Timo Pakkala, co-founder of Casambi, told Lux: ‘Casambi’s partnership with Seoul Semiconductor puts power into the hands of the lighting designer, who can use their expertise to decide how to customise the lighting to the needs of the particular application and the users of the space, and plan an effective human-centric solution based on the latest science.’
- Read more about the Mount Sinai study HERE.
- Seoul Semiconductor will be demonstrating what Casambi Bluetooth technology can do with its Sunlike Series products at the LuxLive 2019 exhibition, taking place taking place at London ExCeL on Wednesday 13 November and Thursday 14 November 2019. Entry is free – see the full programme and register for free HERE.