How SkyBlue® Light Boosts Energy and Improves Focus

team of 6 people doing a group high-five

Article at a Glance: 

  • Nearly all facets of life depend on the sun’s energy. 
  • The sun produces natural blue light that is responsible for regulating circadian responses. 
  • The sky-blue region near 490nm is considered the key wavelength within the blue light spectrum because that is where the human body’s circadian system has peak sensitivity. 
  • Modern technology has caused a noticeable shift to more time indoors under artificial light sources; conventional lighting emits too much of the toxic blue light spectrum that can throw off the body’s circadian rhythm.
  • SkyBlue® lighting technology is the missing link between natural sunlight and artificial lighting as it harnesses the critical sky-blue spectrum for greater energy and focus during the daytime while entraining circadian cues.

All living organisms depend on the sun for nutrients, energy and survival.  Within the sun’s spectral distribution, the sky-blue range of light is associated with circadian cues that help regulate hormones, mood, and your sleep/wake cycle.  But modern technology has increasingly moved society indoors where artificial junk light often leads to fatigue, stress and poor sleep.  This calls for a new standard of lighting that harnesses critical sky-blue light to help keep you calm and focused during the daytime while also entraining your circadian rhythm.

What is sky-blue light?

Our eyes detect wavelengths of light between approximately 400-750 nanometers (nm). This is also known as the visible light spectrum.  Within this spectrum, blue light is defined as 380-500nm, which we can further divide into beneficial or harmful wavelengths based on how they affect our vision and health.  Sky-blue light specifically refers to wavelengths above 460nm, and this is considered the beneficial blue light range. (The harmful blue wavelengths live between 380-460nm.)

Graph showing the harmful light vs beneficial light
Photo Source: Blue Light Exposed

Why is the sky-blue spectrum important?

When blue light enters the eyes, it stimulates intrinsically photosensitive retinal ganglion cells (ipRGCs) in the back of the eyes and sends signals directly to the suprachiasmatic nucleus (SCN) in the brain.  Research shows that this signaling suppresses the production of melatonin (also known as the sleep hormone), which then promotes greater alertness, focus and productivity.(1)   

Our circadian system notably has its peak sensitivity in the sky-blue region, especially near 490nm.(2)   Sky-blue wavelengths are critical for cuing circadian responses — like when to wake up, when to eat, and when to go to sleep. This is an evolutionary function that is hardwired into our DNA to help keep us healthy.

Toxic blue light (within the 400-450nm spike) can have adverse health effects, such as: 

  • Fatigue 
  • Eye strain 
  • Damage to the retinas, which can lead to macular degeneration 
  • Social jet lag 
  • Stress and anxiety 
  • Sleep deprivation 
  • Secondary health concerns that stem from poor sleep (e.g. weight gain, mood disorders, heart disease, diabetes, and even cancer)

How SkyBlue® Technology Can Help Boost energy, Improve Focus, and More

Most LED lighting technologies emit large amounts of toxic blue light and have a trough in the wavelength spectrum (490nm) that emits good sky-blue light.  As a result, they fail to communicate daytime to our bodies and misalign our circadian rhythm.  

BIOS SkyBlue® LED technology provides true circadian lighting for better health and performance. This technology specifically targets the key 490nm wavelength that communicates with our bodies at the cellular level (via a non-visual photoreceptor in the eye) to regulate our circadian biology. 

graph showing where the wavelength of the Truelight Circadia bulb

Note that color temperature (CCT) alone does not communicate whether a light source will have the proper spectrum to address the melanopsin sensitivity curve.(3) SkyBlue® represents the missing link between artificial and natural light by bringing the circadian benefits of the sun to any indoor environment, regardless of color temperature. 

The science behind SkyBlue® is tried and true as this technology was originally developed by NASA scientists and engineers (including BIOS Vice President Robert Soler) to help astronauts achieve healthy sleep/wake patterns on the International Space Station. Today, SkyBlue® lighting solutions empower people to adapt to modern life by blending evolutionary biology with revolutionary lighting solutions in many different applications — including but not limited to homes, offices, hospitals, and schools.  People can now use SkyBlue®to live healthier, happier and more productive lives – as nature intended. 

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