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When light strikes a surface, the reflected waves are polarized to match the angle of that surface. So, a highly reflective horizontal surface, such as a lake, will produce a lot of horizontally polarized light which causes a very intense and sometimes dangerous brightness that results in glare and reduces visibility. Therefore, the polarized lenses in sunglasses are fixed at an angle that only allows vertically polarized light to enter. The horizontal light that creates the effect of glare is absorbed and nullified by the chemical film on polarized lenses.

Light waves from the sun, or other artificial light such as a light bulb, vibrate and radiate outward in all directions. Polarized filters are most commonly made of a chemical film applied to a transparent plastic or glass surface. The chemical compound used will typically be composed of molecules that naturally align in parallel relation to one another. When applied uniformly to the lens, the molecules create a microscopic filter that absorbs any light matching their alignment.

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Polarized sunglasses do not look very different than regular non-polarized sunglasses. As a matter of fact, some companies that produce lower-quality sunglasses market them as polarized sunglasses when they are not. So you need to have a way to tell the difference between polarized vs non polarized sunglasses. Here are some ways to determine if your sunglasses are polarized or not:

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You can simply try this Polarized Sunglasses test on a computer screen. The image below displays how you can rotate your polarized shades at 90 degrees and you will notice your lens turn black and block the light. Or review all 5 ways to test your sunglasses below to tell if your sunglasses are polarized.

Aluminum is as low as 88% reflectivity at one micron while copper is better than 98%. In fact copper is nearly as good as gold.

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The first polarizing film was developed by Edward H. Land in 1929. The technology he used as explained above was simple, yet effective. Lenses are treated with chemicals that only allow in light that travels in a vertical motion. As glare travels horizontally, it can’t make it past the polarized lens.

High Reflection CoatingHigh reflection (HR) coatings are optical coatings designed to reflect as much light as possible from a surface.

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Determining whether your sunglasses are polarized can enhance your visual comfort and protection from glare. Polarized lenses are specially designed to reduce glare from reflective surfaces like water, roads, and snow, offering clearer vision and reducing eye strain. To ensure your sunglasses provide these benefits, you can perform a few simple tests. In this article we will discuss 5 ways to tell if your sunglasses are polarized.

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Everyone should own a pair of polarized sunglasses. They are the premier choice for outdoor enthusiasts, and those who live their lives on the water- fishing, boating etc and anyone else who demands the clearest vision from their sunglasses. The reason they’re in such high demand is mainly because of their glare-reducing benefits. Regular tinted sunglasses do not block glare, so make sure you don’t waste your precious coins on them. Using the guide in this article when next time you want to purchase polarized sunglasses will ensure you buy genuinely polarized ones, and get good value for your money.