13th September 2019 – London, UK.

Leading architectural and building services consultancy ARUP, Newcastle University and LEDMOTIVE and  has conducted a pilot study at ARUP London office into the behavioral effects of dynamic spectrally-tunable lighting and the brain non-visual response.



The office windows were blocked to avoid people being exposed to sunlight during work hours, and different light spectra, designed by a team of scientists, were used. The nine-week trial experiment was designed to understand how ‘light sculpting’ could impact biological and psychological processes.

The experiment used LEDMOTIVE technology which consisted of an LED-based module VEGA07 made with seven different independent wavelengths. Subjective and objective tests were then performed to assess the behavioral responses resulting from exposure to the special lighting, and to compare these with responses to a traditional lighting system.

The results will be presented at the LuxLive 2019 event (https://luxlive.co.uk/) in London in November to raise awareness of the importance of a circadian lighting design and the importance of having a full spectral control and not just tuneable white lighting.

It’s believed to be the first office installation in the world, where outdoor daylight streaming from a spectrometer readout was fed into an indoor area.

The effectiveness of a given light spectrum in activating the so-called non-visual pathway – light receptors in the eye which aren’t connected to ‘seeing’ – was quantified by its melanopic lux in addition to visual factors such as photopic lux or correlated colour temperature (CCT).


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