The Short-Wave Range of the Spectrum

Blue Light and its Importance

Learn more about the biological and physical properties of short-wave light. Find out about blue light’s effects, when it’s good for you and when it’s not, and how to protect yourself and your loved ones.

Knowing what's what ...

Know How Blue light

What is blue light?

Natural daylight is composed of an almost continuous spectrum in which all wavelengths and thus all colors are present. That is why we perceive it as white light. Here you see a spectral measurement of daylight in winter with an overcast sky.

At the short-wave end of the visible spectrum, there are the frequencies of blue and violet light. For convenience, we refer to this range with wavelengths up to about 500 nm (nanometers) as blue light. The correct term, however, would be HEVL = High Energy Visible Light, i.e. the wavelength equivalents for short-wave green, turquoise, blue, indigo and violet. Ultraviolet light (UV) is even shorter in wavelength and can not be perceived by the human eye.

Short-wave light (HEVL) is particularly high in energy and therefore promotes the formation of free oxygen radicals, which are capable of causing cell damage. The fact that UV light can damage the skin and eyes has been known for a long time; that is why sunglasses, for example, must be equipped with 100% UV protection. However, blue light or HEVL protection has been a severely underestimated factor.

Where Do We Encounter Blue Light?


Natural daylight and the light from radiant heat sources (e.g. candles, incandescent lamps) contain a natural counterpart to the aggressive blue components: the long-wave red range and the near-infrared component have a regenerating effect.

However, in everyday life we are most often surrounded by light sources that not only emit a high load of short-wave light, but also lack the regenerating red and near-infrared components.

This is particularly serious in the case of flat screens and televisions, which are illuminated by LEDs and into which we often gaze for hours on end. This shows the spectrum of a commercially available flat screen.

In the blue range, a clear “peak” is visible, an energy spike that never occurs in natural light. Furthermore, this spectrum has hardly any red and near-infrared components.

What are the effects of short-wave light?

We are almost constantly surrounded by blue light - so it's good to know how it affects us.

Natural blue light, as contained in sunlight during the day, is good and important as a clock generator for our circadian clock, as it has a meaningful signaling effect.

However, if this signaling pathway is stimulated in the evening by smartphone screens or other artificial light, chronobiological health suffers.

In the eye itself, it is mainly the cells of the retina that potentially suffer damage from short-wave light in the visible range. This is a process that can occur unnoticed over many years.

However, many people complain about immediate, typical side effects of computer screen work, such as burning and red eyes, headaches and eyestrain. Such symptoms can also be attributed to the short-wave radiation components.

An increasing number of scientific studies have examined the effects of blue and HEV light, and there is a broad consensus on the mechanisms of action.

This magazine article provides a good overview of the current scientific findings:

What problems can occur?

Sleep Disorders
Chronic Diseases
Digital Eye Strain
Retinal Damage

BluelightProtect Products

Anyone who knows about the effects of blue light may want to protect themselves from it in certain situations. Through our BluelightProtect products, we offer you a simple and safe way to protect yourself from harmful blue components in light. Depending on the application, a different filter intensity is appropriate, see for yourself what we have on offer for you.

Specific areas of application for the BluelightProtect filters


Screen + TV

Screens have become an indispensable part of our lives. The smartphone now accompanies most people around the clock, the computer is an essential work tools even outside of traditional office jobs, and after work, there’s entertainment on the flat-screen TV. But our eyes are not made for that, because the LED-lit screens emit an unnatural light with a disproportionate amount of blue. This is where our BluelightProtect filters come into play. Featuring efficient blue light protection in different intensities, there is an ideal filter available for every application.



Children’s eyes are crystal clear, and therefore particularly sensitive to the damaging effects of blue light from LEDs and screens. And as much as we would like our children to play in the fresh air exclusively, screens are now part of our children’s everyday lives – along with increasingly unnatural artificial light in room lighting. That is why we have created the BluelightProtect KiDS, safety eyewear developed specifically for young eyes. Because the health of the youngest is our greatest responsibility.



The “older generations” among us still remember the old classic computer games full of nostalgia. In contrast, today’s video games are sophisticated virtual realities with fantastic graphics. Gamers who invest themselves in such worlds for hours on end know the effects of prolonged gameplay on the eyes. Our PRiSMA BluelightProtect filters offer the e-sports enthusiasts among our customers graduated and highly efficient protection. Depending on your preference, enjoy the high color recognition of our EASY90, the fine balance between protection and color with the LiTE95 filter intensity, or the maximum protection of the PRO99.


Safe on the Road

Road safety depends to a large extent on the processing of optical signals. The faster a hazard is identified, the faster the person behind the wheel can react. Within fractions of a second, objects are recognized and classified and movements are evaluated. Although the processing of these signals takes place in the brain, it is heavily dependent on good raw data from the eye. And this is where our driving glasses come into play. The DRiVE85 filter not only reduces glare from bluelight-heavy LED headlights, it also enhances contrasts, increasing visual comfort, and thus safety, in traffic.

BlueLight Protect Expertise

Blue light/HEVL is a complex topic that has been the subject of much research in recent years, and about which we are learning more and more. At INNOVATiVE EYEWEAR, we believe it is important to provide our customers with the appropriate knowledge in addition to the products. In our magazine, you can delve even deeper into the basic principles, learn more about the current state of research and read the assessment of experts.

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