Polarized glasses have some advantages to stand out from those that are not, especially to perform certain activities such as driving or performing water sports. In short, polarization avoids perceiving the reflections that the sun causes on surfaces such as asphalt or water, and this does not affect the design of the glasses in general.
To understand well what this polarization consists of, it is necessary to understand that the sun’s rays are directed towards all sides, but when they bounce off a horizontal surface, these rays shoot out and increase their intensity to the point of becoming an extremely bright light. or in what is commonly referred to as reflection.
Polarized sunglasses have a special filter that is responsible for blocking the reflected light and that only let the light known as useful pass. Thus, the vision is made without reflections, with natural contrasts and with the colors closest to reality. A vision through polarized sunglasses is a clear vision with greater contrasts.
That is why it is recommended that sunglasses are polarized if you drive a lot and at very different times of the day, if you perform different sports with water as a protagonist, if you have high sensitivity to light, etc. On the other hand, polarized glasses can be graduated or not, reduce eye fatigue, and are also recommended for children. In addition, another advantage of sunglasses that are polarized is that they are formed by several protective layers.
The example of driving is the one that is always put to explain the polarization. Driving usually produce a lot of reflection in the asphalt. These bounce and disturb the vision of the road and other vehicles. With polarized glasses this does not happen, but a more natural vision is recovered, which translates into improvements in driving: greater safety and more reflections. The only drawback is that the polarized glasses do not read the screens used by some cars so easily.
By contrast, polarized glasses are not as effective with other reflections that occur on other types of surfaces, such as a building’s glass and there is no such wide range of lens colors as in those non-polarized glasses. Although, for that, the solution is to have several types of glasses, to be able to choose according to the occasion.
How do you distinguish a polarized sun glasses from one that is not? Many of the polarized ones have a P in their crystal, as a distinctive method but, anyway, it is something that in Sunglasshut store the dependent can solve or that in the web is specified in the description of the product.