Circadian Rhythms & Lighting

Lighting, and particularly Circadian Rhythm Lighting, has a profound effect on a person's mood and happiness.

Prior to the invention of artificial lighting in the late 19th century, people typically went to bed relatively close to sunset and rose around sunrise. Our biological clocks, known as our Circadian Rhythms, are built around not only the sunrise and sunset, but are also tied to the "Color Temperature" of the light throughout the day. After hundreds of thousands of years, this is literally baked in at the cellular level. White is the only color that has a "Color Temperature" and it ranges from a very warm light at sunrise and sunset of 2700K (Kelvin) to the very clear blue light of noon at 6500K.

Artificial Light has altered our relationship to sun and not for the better. Its well known now that blue light/high white color temperature, found in computer and phone screens, makes it difficult to fall asleep. This is why iPhones now have a "Night Shift" option to make your screen a warmer white.

Lighting effects on Mood, Happiness & Productivity

There is a significant body of research that indoor Circadian Lighting, i.e. lights that simulate Circadian Rhythms by adjusting their Color Temperatures to simulate the daily natural sunlight cycle, significantly enhance mood and increase happiness.

Here are a few of the study results:

Source: University of Twente & CBRE Source: SMUD, Study of Lighting for the Spectrum

Lexi Circadian Smart Lighting

Lexi Smart Lighting has several Circadian Rhythm options built in. Customers can select from All Day, Sunrise, Sunset, Color + Tunable White and Tunable White options.

In addition, you can select to have your Circadian Lighting correspond to Sunrise & Sunset in your exact location or create your own schedules.

Lexi Does That