The concept of circadian lighting follows that of the human circadian rhythm, a 24-hour internal clock. The area of the brain called the hypothalamus controls each person’s circadian rhythm by receiving signals from the eyes that report when it’s daytime and night time. The hypothalamus, in turn, controls the amount of melatonin released to correlate sleepiness with darkness and alertness with lightness.

Research has indicated that light affects both our visual and non-visual systems and that electric light can impact circadian rhythm. Circadian lighting is the concept that electric light can be used to support human health by minimizing the effect of electric light on the human circadian rhythm. Scientists have discovered that long-term exposure to certain wavelengths of blue light at a specific intensity can have a negative impact on melatonin production.

Read more from Lillian Knoerzer on The Lighting Practice’s website –

Our Vantage lighting control system accommodates real-world living by allowing users to shift or extend the “sun’s natural path.” A workout scene, for example, might have the virtual sunrise begin at 5:00 a.m. instead of 6:48 a.m, prematurely ramping up the lights’ intensity and colour temperature to suit the early-morning workout.

If you are interested in learning more about circadian lighting, human-centric lighting or tuneable white then contact our friendly experts on 09 377 3778 or by emailing