Improve Your Sleep With The Right Light

The Significance of Light Spectrum for Circadian Alignment

Why Light Spectrum Matters For Circadian Alignment?

Take a garden hose on a sunny day and place your thumb over the end to make a misty spray. Notice what happens as the sunlight catches the water. See the rainbow appear in the spray?

The colours are caused by different wavelengths of light, measured in nanometres. Humans can see light between approximately 380nm – 780 nm. Normally the wavelengths in sunlight are mixed to form white light. But as it hits the water droplets, each wavelength bends at a slightly different angle, separating the sunlight into its different colours.

Sunlight has a broad spectrum. That’s why, in the hose experiment, you can see all the colours of the rainbow.

But not all light sources have this same broad spectrum. Parts of the visible spectrum are almost absent from the artificial lighting, such as LEDs, found in the places we live and work. As it turns out, this has consequences for our health.

From Brightness to Body Clock

Inside the eye, we have several types of light-sensitive cells. LEDs put energy into the part of the visual spectrum these cells are most sensitive too so that the light appears as bright as possible while using little energy.

But there’s another type of light sensitive cell in our eye that doesn’t contribute to vision. Intrinsically photosensitive Retinal Ganglion Cells, or ipRGC’s help control our pupil dilation, and most importantly, they set the circadian rhythm.

The circadian rhythm, also known as your internal body clock, that influences when you wake up, when you go to sleep, your immune system, heart, and many other of your body’s functions.

IpRGC’s are sensitive to light peaking at around 480 nm, the light of the blue sky. Our circadian rhythms depend on daily exposure to this blue-sky light.

Modern LEDs Miss The Sweet Spot

result, those of us who spend most of the day indoors get very little of this light, which can cause your circadian rhythm beginning to drift out of sync with your lifestyle. This is known as social jet lag, because your body clock is quite literally running on a different timezone.

Research shows social jet lag has negative flow-on effects for your health - beyond leaving you feeling sleepy. Social jet lag weakens your immune system, increases your risk of heart disease, diabetes, mood disorders, and various forms of cancer. Chronobiologist, Till Roenneberg, summed it up well when he said, “Social jet lag promotes practically everything that's bad in our bodies.” 

Loop Brings The Blue Sky Back

Ralph and the team's innovative Loop Light is designed to supplement the light that’s missing from conventional lighting to support people’s circadian alignment. Its colour is no accident. During the day Loop mimics the blue sky to provide your circadian rhythm with a strong day time cue. As the sun dips below the horizon, Loop transitions to a warm amber glow that contains zero blue light.

Don't let lack of sleep hold you back any longer. Improve your sleep quality and overall health with the OSIN Loop Light today.


Loop will improve your...







How does it work?

Whether at the office or home, place a Loop on your desk and it will deliver life enhancing light to your environment.

Why Loop?


Our circadian rhythm impacts our entire body. From our metabolism and stress and anxiety levels to our cardiovascular systems. The Loop gives you more control over your health and wellbeing.


Sleep, productivity, and our environment are important factors in feeling our best. If you struggle to get a good nights rest and feel like it impacts your performance, The Loop will improve your sleep.

The OSIN purpose


I started using The Loop because I wanted a better sleep and it did not disappoint. I fall asleep easier, and stay asleep longer.


Working inside has benefits on cold days but it does suck on summer days to miss out on natural light and The Loop on my desk makes a difference to my mood and my sleep.


Has definitely improved my sleep. Looks cool too...