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BluCynk is a newly developed filter system that directs exactly the type of light into the eyes that supports the body’s natural day–night rhythm.
It allows the activating components of daylight to pass through more easily while reducing harmful factors such as UV, scattered light, and high-energy blue light (HEVL). In this way, the filter helps to stabilize your internal rhythm—with full support for eye health.
Today, much of our everyday life takes place under artificial light — on screens, indoors, or with shifted daily routines. This can throw our natural rhythms off balance, as the strongest pacemaker for our internal clock is natural daylight.
That’s where BluCynk comes in: the filter directs precisely those wavelengths of light into the eyes that activate, regenerate, and resynchronize the body during the day — without the components that can overwhelm or harm us in artificial environments. The result is a new sense of balance — for clarity, energy, and the good feeling of being in sync with your own rhythm.
BluCynk specifically supports the natural day-night rhythm through enhanced light stimulation in the 480 nm range.
Targeted light transmission in the biologically effective range around 480 nm provides energy, alertness, and daily structure.
UV, scattered light, and high-energy blue light (HEVL) are effectively reduced, allowing the eyes to relax.
Long-wave near-infrared light is transmitted, supporting regeneration at the cellular level.
The pleasantly light tint of category 1 allows natural color perception and genuine suitability for everyday use.
BluCynk is the ideal complement to blue light protection glasses – for targeted light impulses and natural balance.
BluCynk glasses are much more than just an optical aid—they are a protective shield for your eyes and guarantee clear, relaxed vision.
BluCynk is a newly developed light filter that specifically allows the activating and regenerating components of daylight to pass through while reducing harmful light components such as UV, HEVL, and scattered light. This creates a new light balance that supports the natural rhythm.
BluCynk is worn during the day, especially in the morning or when you experience a lack of light. Ideal for compensating for long periods of screen time or for activating when tired and lacking concentration. BluCynk is also ideal for jet lag—it helps you readjust to your natural rhythm more quickly. Do not use in the evening or at night, as the filter effect tends to make the body more alert.
BluCynk is not a classic pair of sunglasses—even though it protects the eyes. The tint corresponds to filter category 1 and is deliberately kept light to provide pleasant glare protection in daylight without darkening the surroundings too much. This makes BluCynk ideal as a light, activating pair of sunglasses, especially for sports and exercise. In extremely bright conditions, such as in the mountains or on the water, stronger light protection may be necessary.
Blue light has high energy potential and can strain the eyes over time, especially in the short-wave range below 450 nm. Artificial lighting and screen work in particular often lack the natural balance provided by regenerative light components. At the same time, blue light is not harmful per se: certain wavelengths (around 480 nm) are important for controlling the internal clock, regulating hormone balance, and getting the body going during the day. BluCynk makes a precise distinction here—and delivers exactly the right light to the eye to provide support without overstimulation.
BluCynk is ideal for anyone who doesn’t get enough daylight during the day, spends a lot of time in front of a screen, or has difficulties with the natural day-night rhythm—for example, due to irregular working hours, jet lag, or lack of light in winter. BluCynk can also help the body get back into rhythm if you suffer from poor concentration, listlessness, or morning lethargy. The glasses deliver precisely the right kind of light to the eyes to activate them without overstimulating them.
BluCynk adjusts the light composition without adding anything: the activating component—especially around 480 nm—is emphasized by attenuatin gall the other wavelenghts. This creates a clear light impulse that wakes you up and supports your internal clock. At the same time, BluCynk blocks highly stressful short-wave blue components below 450 nm and allows beneficial near-infrared light to pass through almost unhindered – for protection, activation, and regeneration in balance.
HEVL stands for High Energy Visible Light and refers mainly to the short-wave blue range below 450 nm. This type of light has particularly high energy and is suspected to stress cells in the eye over time — for example, through oxidative processes in the retina and lens. HEVL is especially prevalent in LED and screen light and, with frequent or intense exposure, may contribute to eye strain, glare, or long-term damage.
Yes, BluCynk can also be worn indoors – when there is sufficient brightness. The filter modulates the available light to reduce harmful components and emphasize activating wavelengths. However, BluCynk is not useful in dark environments, as the desired light impulse is then lacking.
BluCynk and BluelightProtect take different approaches: BluCynk specifically emphasizes activating light while reducing stress – ideal in the morning, during the day, or when you are tired and your body needs a clear light impulse.
BluelightProtect, on the other hand, blocks harmful, short-wave blue light even into to the hormone-active range. This is particularly useful when using a screen or under LED lighting, as blue is overemphasized in this light and should therefore be filtered out as much as possible. This is just as important in the evening, of course, when light can disrupt the sleep-wake cycle.
The two filters complement each other perfectly: BluCynk for a targeted boost of daylight, BluelightProtect for effective evening and screen protection. Consciously switching between them helps you stay in tune with your natural rhythm.
BluCynk delivers targeted activating light to the eye – this can be particularly beneficial in the morning and during the day. Usually, 15–30 minutes in daylight is enough to get back into rhythm. However, the glasses can also be worn for longer as long as they are comfortable. If BluCynk is worn too late in the day, however, it can lead to unwanted activation, which can delay the natural process of falling asleep.
Yes, BluCynk is suitable for use in traffic during the day and can also be worn while driving. The light tint (filter category 1) with excellent color reproduction ensures clear vision, reduces scattered light and glare, and makes seeing in changing light conditions more comfortable. BluCynk should not be worn at dusk or at night.
BluCynk can help to reset your day-night rhythm. After long flights, the daylight boost in the morning helps you to adjust to the new time zone more quickly. If you work at night, you can use BluCynk specifically before your night shift: around 15–30 minutes of bright light to get you into wake mode. Wearing the glasses during your shift can also be beneficial, as long as it is comfortable. Important: After work, you should avoid light with an activating effect as much as possible—blue light protection glasses (e.g., BluelightProtect PRO) are recommended here to help your body switch to rest mode.
BluCynk only works in sufficient daylight. On most days, it is bright enough outdoors—even when it is cloudy or in winter. However, in very cloudy weather or in dimly lit indoor spaces, the amount of activating light may be too low. Tip: If possible, go outside or sit close to a window—and if necessary, supplement with open windows or additional light sources.
Yes, BluCynk is ideal for outdoor physical activity. The filter specifically directs the activating components of daylight to the eye – for greater alertness, focus, and feeling energized while moving. The light tint allows you to see your surroundings clearly without glare. Ideal for a morning walk, a run during your lunch break, or active moments in between.
Do you ever wonder why some days you just can’t seem to wake up properly, even after a full night’s sleep? There’s a biological reason for that. Our modern lives increasingly take place under artificial light — indoors, in front of screens, with irregular daily rhythms. What’s missing are the targeted light impulses that tell the body when it’s day — and when it’s not. Because light is more than just brightness; it’s the most important pacemaker for our inner rhythm.
BluCynk is the first pair of glasses designed to address exactly this. It wasn’t created as a pair of sunglasses or a screen filter, but as a practical tool for a world that throws us out of our natural balance. Without any artificial stimulants, it helps bring you back in sync — simply through what your body already knows and needs: the right light at the right time.
Whether in the rush of everyday life, during the winter months, with changing shifts, or simply on days when your inner rhythm feels off — BluCynk gently brings you back into the light. For greater clarity, more energy, and a renewed sense of balance in an often unnatural environment.
Our internal clock is located deep within the brain — in the so-called suprachiasmatic nucleus (SCN). This small region controls nearly all of the body’s rhythms: sleep and wake cycles, hormone levels, body temperature, and even metabolism. The most important external cue for this clock is light. It influences when we feel tired, when we get hungry, and when we are able to concentrate.
It’s not just brightness that matters, but the composition of the light itself. In particular, light in the longer-wave blue range (around 480 nm) has a strong activating effect. It suppresses the release of the sleep hormone melatonin and triggers biological processes that set the body to “day mode.”
This effect is mediated by special photoreceptors in the eye that work independently of vision — the so-called ipRGCs. They send information directly to the body’s internal clock. Problems arise when this light signal is missing or irregular: the natural rhythm falls out of sync, which over time can affect health and overall well-being.
A mindful approach to light — allowing the right wavelengths to reach the eyes at the right time — is therefore a key tool for stabilizing the body’s internal clock.
Our body doesn’t just use light to see — it reads it to tell what time of day it is. The key lies in a narrow range around 480 nanometers, which the brain recognizes as a “daylight signal.” When this range is more prominent compared to other wavelengths, the body becomes active: circulation increases, mood lifts, and we feel clearer and more awake.
BluCynk harnesses exactly this effect — not through more light, but through smart spectral balance. Short-wave blue light that unnecessarily strains the eyes is completely filtered out, while longer wavelengths are gently reduced. This allows the activating portion of light to work most effectively — even indoors or under cloudy skies. BluCynk restores the body’s natural wake-up signal — gently, precisely, and without any artificial stimulants.
The internal clock is controlled by the eye—by special sensory cells in the retina called ipRGCs (intrinsically photosensitive retinal ganglion cells). They are particularly sensitive to light at around 480 nanometers—a very specific blue component of daylight. When this stimulus hits the retina, the eye sends signals to the suprachiasmatic nucleus (SCN) in the brain – the central control center of the circadian system. From there, the sleep-wake cycle, hormone balance, body temperature, and many other processes in the body are synchronized.
Important: It is not the absolute amount of light, but the emphasis on individual wavelengths that determines how the body interprets light. BluCynk works according to precisely this principle. Short-wave, aggressive light is completely filtered out, while other visible wavelengths are attenuated—so that the 480 nm range is emphasized when it reaches the eye. The activating daylight impulse is thus amplified without the need for additional light or artificial stimulants. The body receives a clear signal: “It is daytime. You can be active.”
It is widely known that UV radiation damages the eyes, which is why all good sunglasses filter UV light. What is less well known is that visible light in the short-wave range—especially below 450 nanometers—can also have a harmful effect over time. This spectrum is particularly prevalent in artificial light sources such as LED lights, screens, and energy-saving light bulbs.
BluCynk provides targeted protection against the overemphasis of short-wave, high-energy spectra. The filter blocks both UV light and the problematic HEVL components, protecting the light-sensitive structures of the eye — without distorting natural color perception. On the contrary, its gentle gradient tint even enhances contrast and promotes relaxed vision in everyday life.
UV radiation can damage the cornea, lens, and retina—and in the long term even lead to eye diseases such as macular degeneration. Visible light in the range below 450 nm is not “invisible” like UV, but it is also particularly high in energy. It can promote oxidative stress, tire cells, and cause permanent strain on the eyes—especially if this portion dominates in the light spectrum, as is often the case with modern light sources.
BluCynk provides double protection: the filter technology blocks UV light (up to 400 nm) and filters out dangerous short-wave blue light. At the same time, daylight at 480 nm, which is important for the body’s internal clock, is retained. This creates a light profile that protects without dimming – for greater visual comfort and less light stress in modern everyday life.
While short-wave blue light activates the body, long-wave blue light — particularly in the near-infrared range — is associated with balance and regeneration. It penetrates deeper into the tissue, has a gentle warming effect, and can stimulate the body’s own repair processes. In natural sunlight, this portion is abundant — but indoors and behind window glass, it is often almost completely absent.
BluCynk is designed to let these regenerative wavelengths pass through almost unhindered. This creates a natural counterbalance to activating light — without any artificial stimulation. Especially when everyday life takes place under low-light conditions or artificial illumination, the combination of BluCynk and daylight provides access to a well-balanced light spectrum.
Near-infrared light (NIR, approx. 700–1000 nm) is invisible to the human eye but is absorbed by cells through so-called cytochrome-c oxidases. These enzymes play a key role in cellular respiration and energy production. Studies show that targeted exposure to NIR can stimulate regenerative processes — for example, by improving blood circulation, reducing inflammation, and enhancing mitochondrial function.
BluCynk harnesses this natural potential: unlike many sunglasses or windows that block infrared rays, the filter allows these wavelengths to pass through. This allows the light to exert its beneficial effect—unnoticed, but noticeably soothing.
BluCynk was designed for everyday use: its light tint ensures clear and true-to-color vision — even in changing weather or indoors with natural daylight.
The filter not only improves the light itself but also the way you see it: by reducing short-wave scattered light, contrasts appear sharper, colors calmer, and surfaces more clearly defined. This is especially noticeable when reading, working on screens, or on the go. BluCynk’s subtle tint makes it perfectly suited for everyday use — combining protection, comfort, and clarity without overly darkening your view.
Blue light has short wavelengths and is scattered particularly strongly in the atmosphere and in the eye. This can lead to what is known as chromatic noise: edges appear blurred, white areas shimmer, and colors overlap. People with high light sensitivity or certain visual impairments are particularly susceptible to this phenomenon.
BluCynk specifically reduces this scattering by completely blocking wavelengths below 450 nm. Thanks to precise light modulation, color perception remains natural — only the most aggressive blue components are gently removed from the field of view. The result is a relaxed visual experience with clear contours and pleasant brightness — even in changing light conditions.
Our modern lighting environment—especially screens and LED lighting—has a strong blue component and puts strain on the retina. That’s why our BluelightProtect glasses filter out the blue spectrum completely—including the hormone-active range of visible light. However, this also eliminates the natural wake-up impulse that our bodies actually need in the morning and during the day.
That’s why we recommend incorporating regular “daylight showers” for your eyes right from the start. Ideally, you should look out of an open window without wearing protective glasses or go outside into the daylight. This gives your eyes a clear light stimulus. The classic rule here is: the more often and the longer your daylight breaks, the better.
This is exactly where BluCynk comes in: by specifically emphasizing the activating range, it makes the light impulses significantly more efficient. A few minutes per hour—ideally by an open window or outdoors—can be enough to strengthen your internal clock and signal to your body that it is daytime.
This creates a well-balanced rhythm: BluelightProtect for protection from overstimulation under artificial light — BluCynk for activation through natural daylight at the right moment.
When working at night, BluCynk helps to put the body into wake mode.
Worn in bright light approximately 15–30 minutes before the start of a shift, the glasses support the natural activation signal of daylight and facilitate and accelerate the transition to the active phase.
After long flights, BluCynk can also help you adjust to the new time zone and help restore your internal day-night rhythm more quickly.
Important: Avoid activating light as much as possible after the shift.
This is when blue light protection glasses (e.g. BluelightProtect PRO) helps switch to relaxation mode.
Blue light has short wavelengths and is scattered particularly strongly in the atmosphere and in the eye. This can lead to what is known as chromatic noise: edges appear blurred, white areas shimmer, and colors overlap. People with high light sensitivity or certain visual impairments are particularly susceptible to this phenomenon.
BluCynk specifically reduces this scattering by completely blocking wavelengths below 450 nm. Thanks to precise light modulation, color perception remains natural — only the most aggressive blue components are gently removed from the field of view. The result is a relaxed visual experience with clear contours and pleasant brightness — even in changing light conditions.
BluCynk directs the hormonally activating portions of daylight precisely to the eyes, amplifying the body’s natural daytime signal.
Its specialized light modulation emphasizes the range around 480 nm — the key wavelength for synchronizing the internal clock.
The result is a clear, natural light experience that keeps the body active throughout the day — without artificial stimulation or overstimulation.
Thanks to the light tint, the surroundings remain clearly visible and color-accurate without glare.
Perfect for a morning walk, a run during your lunch break, or active moments in between.
BluCynk – Light That Moves You.
Whether as an easy switch with your blue light protection glasses, a simple entry model, or an everyday fit-over version — BluCynk comes in three variants. All use the same filter technology and deliver the same light impulse. The only question is which one best fits your everyday life.
Ideal for anyone already using our blue light protection glasses or who appreciates our holistic concept: the BluCynk filter is available for both Varia models — allowing you to switch from blue light protection to light activation with a single movement.
→ Available for Varia 1 and Varia 2
Simple, effective, and affordable: our entry-level model comes without a changeable filter system and focuses on what truly matters. Perfect for anyone who wants to try BluCynk or simply prefers a straightforward design.
→ Minimalist model – BluCynk only, no additional features
This fit-over model fits comfortably over almost any everyday pair of glasses — ideal for anyone who relies on prescription eyewear but still wants to benefit from BluCynk. The large lenses provide maximum protection and full light performance.
→ Fits over most corrective eyewear
Healthy light supports our internal rhythm — and that’s exactly where BluCynk comes in. Instead of simply blocking light, it selectively emphasizes the wavelengths that activate, protect, and restore balance.
