Become part of our PRiSMA family and receive interesting news about light & color, new products, webinars and much more in our free PRiSMA newsletter!
[prisna-google-website-translator]
Unsere Welt ist voller Farben. The light of the sun consists of radiation of different wavelengths, which we perceive as white light when they are evenly mixed. When objects appear colored, it is because they do not reflect the entire spectrum of light ( as white surfaces do), but only certain wavelengths.
In the same way, color perception changes when a certain spectrum is filtered out by blue-light protection filter glasses. A white wall, if the blue component is missing, appears in the opposing color yellow-orange.
Blue light protection has entered the mainstream – at least in theory. Almost all manufacturers of conventional eyeglass lenses now offer so-called blue light protection coatings. Apart from a slight bluish shimmer on the glass, there is nothing to see and the color perception does not noticeably change as a result.
Does that sound too good to be true? Well, it is. Such coatings reflect only a minimal portion of the visible blue light spectrum. The impressive figures and graphs on the so-called blue light protection often include the invisibleUV component. This is because when blue light in the visible range is filtered out, there is also a visible change in color.
For UV protection – that is, protection from short-wave light in the invisible spectrum – we must rely on manufacturer specifications and industry standards such as the UV400 label.
But when it comes to blue light protection, it’s always about visible light. The scientific term for this is HEVL, the abbreviation for high energy visible light. Since this light is visible, we can always examine any blue light protection promises with our own eyes. If blue looks unchanged through glasses, blue light also reaches the eye. It’s as simple as that.
An adapted protection for every situation, which changes the color perception only as far as it is necessary. This is what Innovative Eyewear products provide. But that’s just the beginning, because the real magic happens inside your brain…. Since daylight also has a constantly changing composition of wavelengths, we humans have an “automatic white balance”. This is why, for example, we do not perceive the orange cast of incandescent light or the blue hue of LED lighting. Due to the same processes, the noticeable change in color when the glasses are put on is usually barely perceptible after just a few minutes.
The long summer evenings are gone, and with fall comes the dark time of the year: by the end of the workday, there is no
A new day begins. The screen lights up, the calendar is full, the to-do list awaits. Everything seems ready for concentration, focus, performance. And yet
When it comes to protecting our eyes, scientific insight makes all the difference. That’s why we asked Dipl.-Ing. Dr. Helmut Walter for his expert assessment.
