Sunglasses with polarization - what is it? Polarized glasses. How to check polarized glasses

Glasses with polarization, or, as they are called, anti-glare sunglasses not only protect from bright light. They help the eye to more clearly recognize the image, illuminated by sunlight, while correcting any distortions.

Polarization

Bouncing off different surfaces, the rays can continue their journey in a vertical or horizontal direction. In the first case, the human eye can no obstacles to distinguish the surrounding objects. Horizontal rays partly overlap with the image forming glare. To eliminate light distortion used glasses with polarization. What it is easy to understand if you imagine a kind of filter that blocks the horizontal rays.

The Polarizing surface – is a material covered with a thin protective film. Getting on the surface layer, the ultraviolet rays are absorbed by them. In the end, the man sees only vertically directed light waves, which do not obstruct vision objects. The absence of horizontal rays reduces the brightness and increases the contrast, thereby reducing eye strain.

Who needs anti-glare goggles

The Most common consumers lenses with polarized – motorists. In view of the risk of occurrence of accidents, they just need a clear visibility while traveling. Sunglasses with polarized drivers eliminate visual interference such as glare from the windshield, instrument panel, wet asphalt, and even the blinding light of the headlights. If you use contact lenses that absorb ultraviolet rays, the motorist can easily see all the objects on the road, even on the sunniest day. Besides, experts have proved that polarized glasses greatly increase the driver's reaction.

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The Second group of contingent vovlekat use special protective lenses – fishermen. Usually, the bright sunlight leaves a strong glare on the water surface. So many avid fishermen began to use during fishing sunglasses with polarization. What it gives them? Anti-glare goggles provide excellent visibility of the water surface even in the clearest afternoon.

Polarization plays an important role in the lives of athletes. Sun light can create interference during surfing or skiing. This is totally unacceptable, because the lack of conspicuity unsafe for athletes and is often a cause of injuries.

Advantages of polarized glasses

Sunglasses with polarization have a number of positive properties. Undeniable advantages of anti-reflective lenses is that they:

• Reduce the load on the optic nerves.
• Protect the eyes from harmful UV rays.
• Improve visibility by reducing brightness.
• Retain natural color.

Negative aspects

In principle, the disadvantages of polarizing lenses is not and can not be. They are comfortable to use and is absolutely safe to view. As drawbacks can be identified unless the following points:

• High-Quality anti-reflective lenses are much more expensive than ordinary glasses. The price of such products may force the buyer to give “money”.
• On low-cost spectacles is usually done with a thin polarizing layer. In the process of operation, he quickly wears out and starts to flake off.
• Sometimes driving glasses distort the image on the screen.

How to choose polarized glasses

It is Impossible to buy universal glasses with polarized, suitable for all conditions. Experts recommend when choosing anti-reflective lenses start from their colours. For example, motorists should give preference to at least two options. For daytime driving suit brown or copper glasses with polarization. It gives special advantages, proved by many users: the contrast of the image decreases, resulting in relaxing the eye muscles. Besides, lenses with brown tint better than others absorb the UV rays. To find driving in the evening is to use a separate model. The perfect choice would be products with a yellow lens.

As for the fishing, for this lesson you can buy the same model points. Perfectly cope with their task grey lens. They are especially suitable for those who enjoy fishing in deep water. And for fishing on a hot clear afternoon it is better to give preference to glasses with green lenses.

Check polarization

Not all manufacturers produce high-quality and authentic product, therefore it is very important to know how to check polarization of sunglasses. To understand whether the chosen model is equipped with anti-reflective lenses, very simple. To do this, just bring the glasses to any LCD monitor. If you rotate the polarizing lens at an angle of 90 ° to the display, the image will darken dramatically. For glasses without anti-reflective coating this experiment is notwork – through the glass, all as clearly can be seen the monitor. Also, instead of the LCD screen for authentication, you can use one pair of glasses with polarization. Normally, the effect should be the same – one of the lenses will darken.

Tips for those who wear regular glasses

In the presence of defects of vision difficult to wear glasses with polarization. That is a huge problem, impossible to say, but still the use of anti-reflective lenses in this case is a bit expensive. Just buy polarized glasses will not work - they are not designed for vision correction. The situation can be corrected in two ways: by wearing contact lenses or use special anti-reflective linings. The first option is quite disadvantageous as it requires regular expenditures. Besides, some people are simply uncomfortable to wear lenses.

A Much better option – to buy an anti-glare overlay. They can replace sunglasses with polarization. What is this product, is not known to all. Polarizing plate is a structure of two anti-reflective lenses, which is attached to normal glasses. It is very convenient – the product is easy to attach and remove, without causing discomfort to the user. It is better to give preference to models with the mount on the bridge of the nose, since they are the most convenient to use. The perfect choice would be lining designed specifically for driving.

Sunglass lenses are designed to protect human eyes from dangerous UV rays. However, this task can handle only the sunglasses with polarization. What does it mean? Polarized glasses – this miracle of technology, compared to ordinary sun lenses. For simple mods they are not so useful, but for lovers of an active lifestyle – indispensable.