Ten human centric lighting stories you MUST read

Human centric lighting has a lot of buzz around it at the moment, but what do we actually know about the technology? Here are ten articles to help you find out more.



1)  Is human centric lighting witchcraft?

'Depending upon which side of the lighting political fence you sit, blue light is either the work of the devil or a new wave in lighting that is going to make us healthier, happier and more intelligent. The big issue I have with all the research is that, while I can be convinced of the arguments and can understand the implications, it doesn’t reflect what I experience in my real life.' To read the full article click here.




2) The jury is still out on human centric lighting 

'If someone is selling you a lighting product that they say will have a particular non-visual effect, take it with a pinch of salt. The phrase ‘human-centric lighting’ seems to be everywhere nowadays. 

I have seen it used to describe everything from bathroom lights and adjustable desk lamps to installations in large hospital wards, multi-storey office blocks and streetlighting.'  To read the full article click here.



3) The hotel lighting trick that could cure jet lag

'Imagine if the lighting in your hotel room could fix your jet lag. It is not such a crazy thought, according to Dr Russell Foster, the professor of neuroscience credited with discovering the ganglion cells that set our  bodies' daily circadian rhythms.

The concept is simple: as you walk into your hotel room, your key card tells the control system where you’ve arrived from and the lights then change to the ideal colour temperature to adjust your body to the new time zone.' To read the full article click here.



4) ‘New standards needed’ to deal with light’s effect on our body clocks

'The effect of light on the body should be recognised in updated lighting standards and guidelines. Christian Cajochen of the University of Basel explained ways to measure and quantify how lighting influences our bodies. Cajochen’s research focuses on the ‘non-visual’ effects of light – such as the impact that light has on the body clock, alertness and sleep.' To read the full article click here.



5) Light is a drug, so let's administer it correctly

'From manufacturers to wholesalers, the lighting supply chain needs to start measuring and explaining the non-visual impact of its products on end users.

That’s the view of Professor Herbert Plischke, of Munich University of Applied Sciences, who told delegates in a packed session at LuxLive of the growing body of evidence to suggest that the right light – at the right time – can stabilise hormonal rhythms, enhance night-time melatonin secretion, improve sleep quality, increase day-time vigilance and raise our resilience to stress.

For shift workers and others who are active at night, appropriate lighting could reduce ‘chronodisruption’ – the effects of the body being active when it is not prepared to be.' To read the full article click here.



6) Can light improve patient health?

'Researchers found that when humans are exposed to bright light during the day, mood and sleep improve. Because of the low light levels in hospitals and the huge change in what people are used to, patients often have difficulty sleeping. The findings from the Journal of Advanced Nursing point to biodynamic lighting as a relatively inexpensive way to improve patient care.

Dr Esther Bernhofer of Cleveland Clinic and her colleagues conducted a study to determine if there is a relationship between hospital lighting, mood, sleep and pain in adult patients.' To read the full article click here.



7) Light: the drug we're still not taking

'The idea of lighting that makes us feel better or be more productive has been around for some time now; the science behind it has really shaped up over the past decade, and new lighting solutions for offices, schools and hospitals indicate that the market is catching up with our growing knowledge about the way lighting affects us.

There’s just one thing still missing: an abundance of real-life case studies that we can show to our bosses to convince them that our classrooms, patient rooms or desk spaces need the benefits of biodynamic lighting too.' To read the full article click here.



8) Human-centric lighting set to take off in Europe

'Lighting designed to promote health and wellbeing could soon be a multibillion-euro business, according to a study by Lighting Europe, the German Electrical and Electronic Manufacturers’ Association and consultancy AT Kearney.

The report on ‘human-centric lighting’ said that it could account for seven percent of the general lighting market by 2020.

The potential size of the market was estimated by analysing the amount of floor space that would become available to be relit, the predicted penetration rates of the technology, and pricing.' You can read the full article here.



9)Eagle and Fagerhult set for take-up in human-centric lighting

'Fagerhult is predicting a growing interest in human-centric lighting in Australia, as research into the effects of lighting on the body’s circadian rhythms and biodynamics becomes more widespread.

'The indoor lighting market in the Nordic countries, such as office and schools, is fond of pendant luminaires, which have an indirect element that can be advantageous in terms of health and well-being and its effect on circadian rhythms via tunable fittings,' Daniel Unoson, product and application manager at Fagerhult and key account manager for Australia, told Lux.' To read the full article click here.



10) Three ways to use human-centric lighting in offices

'There is not the space here to describe in detail the many aspects of HCL design. In essence, the idea is to synchronise the lighting with our circadian rhythms, or even to modify them -  for example, using artificial lighting to reduce the effects of jet lag. 

However, what is certain is that there are three inter-dependent parameters which control the effect of light on humans. The first is the spectrum and it is well established that the blue wavelengths are the biologically active parts. The illuminance level, often referred to as 'intensity' in HCL literature, also plays an important part. However, illuminance is always closely connected with the timing, duration and previous history/adaptation state.' To read the full article click here.


  • Lux is hosting a special Lighting for Health and Wellbeing conference in London on Thursday 22 September. It's free for all those associated with the management of buildings services. To view the details and register for a place, click on the conference logo here.

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