Better view of the road and water
Everyone has a pair of sunglasses lying around somewhere for those moments when you are bothered by the sun. Yet you can – with sunglasses on – still suffer from the light. Standard sunglasses do reduce the brightness of light, but do not remove the glare from reflected light. Think of the reflection of the sun on your car window. If you opt for polarizing sunglasses, you will no longer be bothered by this. How does it work and what are the advantages of such sunglasses?
A few years ago you paid the top price for sunglasses with polarized lenses, but nowadays they are affordable for everyone; also on strength. And that makes the purchase definitely worth considering, because such polarized sunglasses have quite a few advantages. But what exactly do such glasses do?
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Everyone knows the nasty reflection of sunlight that reflects off glass, asphalt, water or snow. And no normal sunglasses can withstand that. Polarized glasses are, and that is precisely the reason why, for example, Veilig Verkeer Nederland and the ANWB recommend such glasses in bright, low-lying sun while driving. The fact that polarized glasses do their job at such a moment is due to a special filter that ensures that sunlight is filtered even better and annoying glare disappears. In addition, this filter ensures that you see colors, contrast and depth of field better. This looks a lot quieter and that is more pleasant for your eyes. How does polarized glass work?
How does it work?
Polarized glasses therefore remove the light glare. But what exactly is light glare? (Sun)light falls on any object or surface and is then partly absorbed and partly reflected. This reflection occurs both horizontally and vertically. Usually we have to deal with horizontal light reflection, because we stand or sit upright. For example, when we drive, look at water, ski or snowboard. Sunglasses with polarizing lenses contain a special foil with a filter that absorbs horizontal reflection. In other words, in addition to reducing light intensity, polarized sunglass lenses absorb horizontal light.
The benefits of polarizing sunglasses
- Less annoying glare
- Improves contrast
- Improved color perception
- Less eyestrain and more comfortable vision
- Safer through better visibility, for example in traffic
- Can be made to strength, also multifocal
If you wear polarizing sunglasses, you may not see the screen of your navigation system in the car or smartphone as well. This has to do with the type of screen. One screen goes dark and the other screen remains visible. Fortunately, more and more manufacturers are coming up with such a sunglasses-friendly display.
How do you recognize polarized sunglasses?
In the store you can recognize polarized sunglasses by a sticker on the glass that indicates that the glasses have a polarizing effect. Some brands (such as Ray-Ban) have a P engraved in the glass. In general, these glasses also have a special photo with which you can see the effect of such a filter very clearly when you put on polarized glasses.
Do my own glasses have polarized lenses?
Want to know if your favorite sunglasses have polarized lenses? You can check it like this: hold the sunglasses in front of a large surface where light shines on. Then turn the sunglasses at an angle of 90° to the light and see if the light glare increases or decreases. If so, then you’ve got your hands on polarized sunglasses. You can also test your sunglasses by holding them at a 45° angle to your mobile phone. Your mobile emits polarized light at the same angle. If you alternately hold your sunglasses below +45° and -45°, the image will be darker at one of those angles. Is the glass in your favorite sunglasses not polarized? Many frames are suitable for having lenses with a polarizing effect installed by the optician, even with prescription.
