Benefits of traditional light therapy made accessible

With state of the art industrial design, electronics manufacturing, and optical technology, Lumos help regulate the natural light-dark cycle to help generate serotonin during the day and supports melatonin conversion in the evening.

Why we need Lumos?

Every day, we wake up, dress in a dimly lit room, duck inside the comfort of our vehicles for the morning commute, and type away in front of a screen for the rest of the day. We are part of the indoor generation. On average, people spend 90% of their day indoors. However, the comfort and convenience we gain from staying indoors come at a cost.

Our biological clock relies on the natural light-dark cycle to reset our circadian rhythm every day.

The lack of exposure to natural sunlight, amongst other reasons, leads humans to develop circadian rhythm disorders which include:

These disturbed rhythmic sleep patterns result in symptoms like insomnia, excessive daytime sleepiness, difficulty waking up in the morning, depression, the stress in relationships, poor work/school performance and an inability to meet social obligations.

The Center for Disease Control and Prevention reports that up to 35% of adults (>18) report having less than 7 hours of sleep. The same report also states that adults who sleep less than 7 hours are more likely to be obese, physically inactive and are prone to chronic health conditions like heart attacks, asthma, arthritis, depression and diabetes to name a few. However, the impact is more than just medical, it’s economical.

A 2016 RAND report estimated that employees sleeping fewer than seven hours per night cost the US more than $400bn a year, and the UK $40bn a year.

These problems are not just limited to adults. Adolescents need 8 to 10 hours of sleep per night. But, more than two-thirds of US high school students report getting less than 8 hours of sleep on school nights. The trends suggest that students in higher grades are more susceptible to sleep shortage compared to their younger counterparts.

It could be said that we are all a part of a silent sleep disorder epidemic and must work on increasing awareness and developing solutions that help our societies at large.

The science behind it all

Your circadian rhythm is like an internal clock with a period of approximately 24 hours. It is entrainable meaning your circadian rhythm can be coupled to a zeiteger (oscillation forces). When we have relatively consistent timed zeitgebers it can support stable entrainment. For example, when we consistently receive high light exposure during the day, and minimal light at night. Ideally, we want the internal period (circadian rhythm) to be synchronized with the external period (light/dark cycle).

The 24-hour light/dark cycle is the primary zeitgeber for humans and when they are synchronized, we are able to initiate biological processes to help us function optimally.

When we sense bright light as opposed to soft and warm light, our bodies release different hormones. When we see more light, cortisol levels increase to make us more alert. When we see less light, melatonin is released to you make more tired. Increased light exposure from our eyes also allows the suprachiasmatic nuclei (SCN) of the hypothalamus (a part of the brain) to suppress melatonin synthesis.

Sunlight typically ranges between 50,000 and 100,000 lux (the unit to measure light) which is much higher than the average indoor light bulb of 250 to 500 lux.

The more bright light we can get during the day, the more alert we will feel. The opposite is true at night, the less lux we get, the better we can sleep. The graph below demonstrates the light exposure we typically experience, especially during the winter. As you can see we are mostly under-exposed to light during the day (except for times we either step out for a walk or drive in a car) and over-exposed at the night.

Graph showing human light exposure patterns

The human circadian system can be shifted based on the level of light intensity. “Phase shift” demonstrates how much your circadian rhythm can move in just one night. When we are outdoors on a sunny day, our bodies can shift the circadian rhythm by up to 3 hours. This is how your body adjusts in different time zones.

The way our bodies receive light is through the eyes. Our eyes have three known types of cells: rods, cones, and discovered about 20 years ago, the intrinsically photosensitive retinal ganglion cells (ipRGCs). These cells express a photopigment called melanopsin which allows these cells to respond to light and the ability to assess changes in ambient light levels. When melanopsin cells are exposed to light, in particular blue light, it stimulates the SCN which is where your circadian rhythm is located, therefore playing a big role in circadian rhythm entrainment.

The most sensitive type of cell to blue light are ipRGCs, therefore when we see blue light, it might not seem very bright, but it can have a powerful effect on your biology.

Our technology

The Lumos Glasses actively controls the amount of blue light you get through a battery-powered light source combined with a nano-coated lens, all the while looking like a normal pair of glasses. Depending on your personalized needs, the sensors on the glasses work seamlessly with your smartphone to give you a tailored blue light experience.

Glasses I

The Glasses I is equipped with a light source and battery in each of the spectacle’s legs and the lenses have a patent-pending nano-coating developed by us that plays its part as both a reflective surface as well as a light filter.

We have carefully engineered the position of the light sources to ensure your eyes have the maximum exposure to the light without it disturbing your line of sight. The filtering properties of the nano-coating double up as a blue light filter which helps to decrease the over-exposure we experience at night.


Moreover, we have equipped the spectacles with a light sensor to observe your light exposure and Bluetooth to seamlessly communicate with your Smartphone.

Lumos App

Once paired with Glasses I, the easy-to-use Lumos app can be used to control your light therapy sessions.

Lumos app concept screen
You can schedule your light therapy sessions, adjust the light to your preferred intensity and monitor your battery life.

Additionally, thanks to the on-device light sensor the Lumos app can nudge you to either start a session when if we notice that you are under-exposed or recommend you to decrease the light in your environment if you are over-exposed for a long duration of time.

It doesn’t end there - we help track your light exposure performance over time and combine the insights, if available, from your phone's health apps to show you how well your circadian rhythm vitals are doing.

Sleep science, made to fit your busy lifestyle

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