How to use your BIONAUT™ blue light glasses
For maximum calm in the evening and support for your natural sleep rhythm.
Sleep 550nm
Your BIONAUT™ Sleep 550nm glasses are designed with one clear purpose: to help your body switch from active to rest in the evening.
During the day, your body needs light. Morning light in particular helps you wake up, supports alertness and sets your biological clock. But in the evening, things work differently. That is when your body needs less activating light, so the natural production of melatonin can begin.
The Sleep 550nm glasses help by filtering the most disruptive part of artificial light and screen light: blue and green light up to 550 nanometers.
When should you put on the Sleep 550nm glasses?
Use the glasses:
2 to 3 hours before going to sleep
For most people, this is the ideal moment. It gives your body enough time to shift towards rest.
Or directly after sunset
For a natural evening routine, you can put on the glasses as soon as it gets dark outside and you are still exposed to lamps, screens or bright artificial light.
When using screens in the evening
Think of your smartphone, laptop, tablet, television, gaming or working behind a screen.
Under LED lighting or bright indoor lighting
Screens are not the only source of blue light. Modern lighting, office lights, kitchen lights, bathroom lights and street lighting can also keep your body alert in the evening.
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How do you use the glasses in the best way?
Step 1: wear them consistently
Blue light glasses work best when you do not use them occasionally, but make them part of your evening routine.
For example, put them on at the same time every evening. After a few days, this naturally becomes a signal to your body: the day is done, the evening begins.
Step 2: combine the glasses with softer light
The Sleep 550nm glasses filter a lot of light, but your routine becomes even stronger when you also adjust your environment.
Dim your lights where possible. Choose warm light instead of cool white light. Turn off bright ceiling lights and use smaller, indirect lamps instead.
The calmer your light environment, the stronger the signal towards sleep.
Step 3: keep using screens consciously
You do not necessarily have to avoid all screens, but be honest: bright light, fast content, work emails and social media keep your brain active.
So use the glasses mainly as protection against light, but also try to make your evening less stimulating.
A good rule: the closer you get to bedtime, the calmer the activity should be.
When should you not use the Sleep 550nm glasses?
Do not use these glasses in traffic.
Because of the strong filtering, colour perception changes and contrast is reduced. That is why the Sleep 550nm version is not suitable and not allowed for driving, cycling or other situations where good colour and contrast vision are important.
Also do not use the glasses during the day when you want to feel awake, alert and active. In the morning and during the day, your body needs light, especially natural daylight.
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The perfect day and evening routine
The glasses work best when you see them as part of a complete light strategy.
Morning: actively seek out light
Go outside as soon as possible after waking up. Even 5 to 10 minutes of morning light can already help you start your day well.
Daylight outside is much stronger than indoor lighting. This morning light helps set your biological clock firmly to daytime. A strong start to the day often also makes it easier to move towards sleep in the evening.
During the day: use light as a source of energy
During the day, blue light is not your enemy. It helps you stay awake, sharp and active.
If you work a lot behind a screen or spend long periods under artificial light, the BIONAUT™ Work 480nm version may be the more logical choice during the day. It filters more mildly and preserves more contrast and colour perception.
Evening: protect your rest
After sunset, the focus shifts to winding down. That is when the Sleep 550nm glasses are the right choice.
Wear them when using screens, under artificial light or in a busy evening environment. See them as an optical twilight: they make your modern light environment feel more natural again.
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Guide: how to use the BIONAUT™ Work 480nm blue light glasses
The BIONAUT™ Work 480nm glasses are designed for daytime use, during work, screen use, artificial light and moments when you do want to stay sharp and active, but want less exposure to bright blue light.
Where the Sleep 550nm glasses are intended for maximum evening filtering, the Work 480nm glasses are designed for balance: protection against the most intense part of blue light at the wrong moments, without making the world look too dark or too red.
The lenses filter blue light up to 480 nanometers. This keeps colour perception and contrast much more natural than with Sleep 550nm glasses. This makes the Work 480nm version suitable for office work, screen use, studying, gaming, driving and daily use. It helps mitigate overstimulation from bright blue light.
When should you use the Work 480nm glasses?
Use the Work 480nm glasses:
- During daytime screen work
When working for long periods behind a laptop, monitor, tablet or phone. - Under artificial light
Especially with LED lighting, office lighting, shop lighting or other bright indoor lighting. - During gaming or intensive screen use
The glasses help make bright blue light feel softer without fully distorting the image. - While driving or on the go
Unlike the Sleep 550nm version, the Work 480nm glasses preserve much more contrast and colour perception. This makes this version suitable for use in traffic. - In the early evening
For example right after work, while cooking, reading, watching television or relaxing. Later in the evening, closer to bedtime, the Sleep 550nm glasses are the better choice.
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How do you use the Work 480nm glasses in the best way?
Step 1: use them during long screen sessions
Put on the Work 480nm glasses when you spend longer periods behind a screen. Think of working, emailing, designing, administration, studying or online meetings.
You do not necessarily have to wear the glasses all day. Use them especially at moments when your eyes receive a lot of artificial light or screen light.
Step 2: use them under bright artificial light
Many people think of screens when they think of blue light, but modern indoor lighting also emits a lot of blue light.
If you work in a space with bright LED lamps or cool white light, the Work 480nm glasses can help make the light feel calmer, without making your work environment dark or unnatural.
Step 3: use them as a daytime filter, not as a sleep filter
The Work 480nm glasses are not a replacement for the Sleep 550nm glasses in the evening.
If you want to support your sleep rhythm as much as possible, switch to the Sleep 550nm glasses after sunset or 2 to 3 hours before going to sleep.
See the Work 480nm as your active daytime glasses for screen use, driving and other daily activities. See the Sleep 550nm as your calm evening glasses.
When should you not use the Work 480nm glasses?
Make sure you get as much natural daylight as possible throughout the day. Take those moments whenever you can. If you get plenty of natural daylight, there is little need to use these glasses. If you still spend long periods behind a screen, this can be especially challenging during winter.
Do not use the Work 480nm glasses if you want maximum evening filtering.
For sleep, melatonin and a calm evening routine, 480nm is usually not strong enough. The glasses do filter an important part of blue light, but they allow more light through than the Sleep 550nm version.
Also do not use the Work 480nm glasses as a reason to keep using bright light and screens late into the evening without limits. Even with a filter, it remains wise to make your light environment calmer in the evening.
Work 480nm in your daily routine
Morning
Go outside first after waking up. Morning light is important to start your biological clock properly. Do not wear the Work 480nm glasses outdoors during the day, because your body needs natural daylight then.
Workday
Use the Work 480nm glasses during screen work, meetings, administration, studying or work under artificial light.
This is when the glasses make the most sense: you want to stay active, but you also want to reduce the strain of bright artificial light and screen light on your eyes and brain.
Early evening
In the early evening, you can still use the Work 480nm glasses, for example while cooking, watching television or relaxing.
When it gets later in the evening and bedtime comes closer, switch to the Sleep 550nm glasses for stronger filtering.
Who are the Work 480nm glasses suitable for?
The Work 480nm glasses are especially suitable if you:
- work a lot behind a computer
- are sensitive to bright screen light
- often sit under LED lighting
- want fewer visual stimuli during work or study
- are looking for glasses for daytime use
- want a blue light filter that is also suitable for traffic
- game or consume a lot of digital content
- do not want to wear a strong orange-red evening filter during active moments
What can you expect?
The Work 480nm glasses make light feel calmer and less harsh, without turning the world completely orange or red.
Many people experience this as more comfortable during prolonged screen use, especially in rooms with artificial light. The glasses are designed to remain functional during the day: you can continue working, reading, driving and communicating without your vision changing too strongly.
What you should not expect: the same sleep-focused effect as the Sleep 550nm glasses.
The Work 480nm is intended for comfort, focus and daytime protection. The Sleep 550nm is intended for evening calm and support of your natural sleep rhythm.
Practical usage rules for Work 480nm
- Use them during prolonged screen work.
Especially with a laptop, monitor, tablet and smartphone. - Use them under bright artificial light.
Such as office lighting, LED lamps and cool white light. - Use them during the day and in the early evening.
Not as your main glasses right before sleep. - Use them in traffic.
The Work 480nm version preserves more contrast and colour perception than the Sleep 550nm version. - Switch to Sleep 550nm later in the evening.
For maximum support of melatonin and your sleep rhythm.
Using Work 480nm and Sleep 550nm together
The strongest approach is not choosing between Work 480nm and Sleep 550nm, but using both glasses at the right moment.
Use the Work 480nm glasses during the day when you want to stay active, but want less exposure to bright blue light.
Use the Sleep 550nm glasses in the evening when your body needs to wind down towards sleep.
This is how you follow the natural rhythm of the day:
Daytime: light, focus and activity.
Evening: rest, filtering and preparation for sleep.
That is exactly what BIONAUT™ stands for: the right light at the right time.
Who are the Sleep 550nm glasses suitable for?
The Sleep 550nm glasses are especially suitable if you:
- still use your phone, laptop, tablet or television in the evening
- have difficulty falling asleep
- often wake up feeling tired
- are sensitive to bright light in the evening
- work shifts or irregular hours
- travel a lot and want to support your biorhythm during jet lag
- are consciously working on sleep, recovery, energy and health
What can you expect?
Many people experience the Sleep 550nm glasses as calming. Light feels softer, screens feel less bright and the evening becomes visually more relaxing.
What you should not expect: a magic button that instantly gives you perfect sleep.
Sleep is influenced by several factors: stress, caffeine, alcohol, movement, nutrition, temperature, rhythm and screen behaviour. But light is one of the strongest signals for your biological clock. That is exactly why a good evening filter can make a meaningful difference within a healthy sleep routine.
Practical usage rules
- Wear the glasses 2 to 3 hours before bedtime.
For example from 8:00 PM if you go to bed around 10:30 or 11:00 PM. - Use them with screens and artificial light.
Not only your phone, but also LED lamps and bright indoor lighting count. - Do not use them in traffic.
The Sleep 550nm lenses are made for evening calm, not for road safety. - Do not use them as morning glasses.
In the morning, you actually want to receive daylight. - Combine them with a fixed routine.
Getting up at the same time, getting morning light, stopping caffeine in time and dimming lights in the evening all strengthen the effect.
Common mistakes
1. Putting the glasses on only when you are already in bed
That is actually too late. You want to prepare your body before bedtime. Ideally, start 2 to 3 hours earlier.
2. Only using night mode on your screen
Night mode is better than nothing, but your environment is often still full of artificial light. The glasses filter all the light that reaches your eyes, not just the screen.
3. Wearing the glasses during the day for sleep
During the day, you do not want to block light as much as possible. For daytime use, a milder filter such as Work 480nm is more suitable.
4. Thinking transparent lenses do the same thing
Transparent blue light filters usually block far too little of the relevant spectrum to have a serious effect on sleep or biorhythm. And what they do block is part of a relevant daytime spectrum that you actually do not want to miss. For evening use, you need a true orange-red filter.
Sleep 550nm, Work 480nm or transparent?
Sleep 550nm
For the evening, after sunset and 2 to 3 hours before sleep. Maximum filtering of blue and green light up to 550 nm. The best choice for sleep and circadian rhythm. Not suitable for traffic.
Work 480nm
For daytime, office work, screen work, gaming and traffic. Milder filtering with preservation of contrast and colour perception.
Transparent
At most, it reduces some glare, but it is not a serious sleep filter. Not the right choice if you want to support your melatonin or biorhythm.
Read everything about the truth about blue light glasses
Conclusion
You do not use the BIONAUT™ Sleep 550nm blue light glasses all day. You use them at the right moment: in the evening, after sunset or 2 to 3 hours before going to sleep.
During the day, seek out light. In the evening, protect yourself from the wrong light.
That is the essence of healthy light use:
the right light at the right time.
With the Sleep 550nm glasses, you make your modern evening environment calmer, darker and more natural for your brain. Exactly at the moment when your body wants to prepare for recovery, deep sleep and a new day.