Polarized lenses protect against annoying glare caused by reflected sunlight. Just think of the reflected sunlight that shines on the glass, asphalt, water, or snow. Sunglasses with polarized lenses eliminate these glare, ensure that you see colors faithfully, and see sharpness and depth better.
How does polarized glass work?
You probably recognize it: the sun is shining on a watery road surface and the reflection of the light creates a blinding effect. This brilliance is the reflection of (sun) light on a surface. The surface absorbs some of the light but also reflects some of the light back. This reflection creates a horizontal and vertical glare that makes surface, objects, and depth difficult to see. To eliminate glare, polarized sunglasses have a special filter that mainly absorbs horizontal reflections, enhances contrasts and colors, and removes glare. In addition, the dark glasses of polarizing sunglasses let less light through, so that you are more resistant to UV radiation.
When do you need polarizing sunglasses?
For people who are often on the road, do water sports or go on winter sports, sunglasses with polarized lenses are certainly useful. Because sunglasses with polarized lenses have a special coating that absorbs glare, it makes the activity much easier without the sun straining your eyes.
Traffic: When you are on the road a lot, having polarized sunglasses is definitely a must. Because the glasses protect your eyes against glare from the sunlight on, for example, a wet road surface, it is safer and more comfortable for your eyes. You no longer have to squeeze your eyes when sunlight reflects.
Water sports: When practicing water sports, such as fishing, polarizing sunglasses can make all the difference. Polarizing lenses block glare and make colors and contrasts more visible. It even makes it possible to see through the water. In addition, glasses also offer protection against water splashes in the eyes and flying hooks.
Winter sports: When you go into snow areas, sunglasses are definitely recommended. They protect your eyes from UV rays. Polarizing sunglasses with dark glasses are definitely recommended for these areas! The dark lenses allow less light to pass through, which means they offer better protection against UV rays. Polarizing lenses filter out glare and make colors and contrasts more visible. In addition, polarizing sunglasses give rest to the eyes. Read more about the different lens colors and protective filters for the correct light transmission.
How do you recognize polarized sunglasses?
When purchasing new sunglasses, the supplier will indicate whether the sunglasses have polarizing lenses. Usually, there is a sticker with a "P" on the glass. This sticker indicates that the glasses have a polarizing effect. It is often also stated on the product page of specific sunglasses in the product specifications whether the sunglasses have polarized lenses. You can also see it in the picture. For example, Ray-Ban has a P engraved in the glass next to the Ray-Ban logo.
Your sunglasses at home:
Do you have sunglasses at home, but are you unsure whether the lenses are polarized? Try the following trick:
LCD screens: The easiest way to find out if your sunglasses have polarizing lenses is to look at your tablet or smartphone with the sunglasses and rotate the screen. When you turn the screen, the two polarization directions disappear, and the image is too dark to red or black. This effect will only happen to polarised glasses.
Mirror surface: Another way is to look up at a mirror surface, such as water, with the sunglasses. If you can hardly see the glare and reflections and increase the contrast, you are dealing with polarizing sunglasses.