Human Centric Lighting (HCL) is a concept for interiors that factors not only the visual, but also the emotional and non-visual impact of the light. A key pillar of the wellness design philosophy.
Defined as a type of lighting that can benefit the biological, emotional, health, or wellbeing of people. Achieved through dimming of a smart LED light source to mimic the natural light levels throughout the day.
Usually, HCL is understood to mean the adjustment of lighting according to the natural sequence of daylight. In addition to the illuminance, which will reduce as the day progresses, the changing colour temperature of light is essential. Transitioning from high blue components in the morning hours, warmer light at sunrise, increasing blue components at midday, decreasing in blue components towards the evening with low illuminance after sunset.
The changing light has a direct effect on the harmonisation of the biological clock and the release of melatonin, the sleep hormone, from the pineal gland via photosensitive ganglion cells containing melanopsin .
Designed to enhance human performance, comfort, health and wellbeing through the balancing visual, emotional and biological benefits. Harnessing such lighting not only can aid wellness in artificially lit environments, recalibrate circadian rhythms, but it can be harnessed to improve alertness and concentration during learning or sustained focus, such as school and work periods, through delivering smarter lit environments.