Circadian Lighting

SCIENTISTS say they have identified the exact wavelength of light which controls the sleep-wake cycle of humans.  A paper, published in the Journal of Biological Rhythms today, reveals that 477 nanometres is the most potent light to control people’s circadian rhythm.  The researchers have dubbed it ‘Circadian Blue’. The study has major implications for how...
Circadian Lighting

AN INSTALLATION of circadian lighting at a care home in Derbyshire, UK, has reduced the number of falls experienced by its elderly residents, it has been revealed.  The spectrum-controlled lights at the 60-bed Heanor Park care home led to a ‘significant reduction in the amount of falls a care home would usually experience’ with only...
Circadian Lighting

A NEW metric has been unveiled to address the naturalness of artificial light. The Average Spectral Difference measure has been developed to enable the objective comparison of naturalness between different light sources. US LED giant Bridgelux – which created the measure – says a new numbering system is needed to address the growing market interest in...
Circadian Lighting

EACH INDIVIDUAL should have a personal lighting profile to achieve a ‘work light balance’, a leading expert in the human aspects of lighting has claimed.  Henrik Clausen, professor of lighting design at the Aalborg University in Copenhagen and head of research at the Fagerhult Lighting Academy, says the concepts will help people use controls to...