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Myths about Polarised lenses.

Here we have some more information about some common myths connected to polarised lenses. The reason we have included all this content is mainly because our wooden sunglasses are protected with Polarised lenses throughout our range. Giving only the best vision in all light conditions.

 

Myth: Polarised Glasses Fully Block Glare

The concepts of glare and polarisation are complicated, as are the interactions between the two. Normal light moves on many planes. When light waves bounce off of a reflective surface, however, they become polarised. Polarised light moves mostly along one plane. A polarised filter most effectively blocks light that is polarised at a 90-degree angle with respect to the axis of the filter. More light is reflected and therefore polarised horizontally rather than vertically. Therefore, polarized sunglasses are vertically polarized. This drastically reduces horizontal glare. However, the interrelationships between types of glare, polarisation of both the glare and the filter, and the angle of the sun mean that polarized sunglasses will not effectively block all glare at all times. Polarised sunglasses do maintain the traditional features of sunglasses. While your polarised glasses may not perform their polarisation duties perfectly at all times, they will cut the brightness of ambient light. Polarised glasses cut the intensity of light by at least half. As with normal sunglasses, you can choose the level of darkness that you would like.

 

Myth: Polarised Glasses Are Expensive So They Must Be Good

Actually, price is no guarantee of quality.

 Many very expensive polarised sunglasses do not meet industry standards for UV protection. Likewise, many inexpensive sunglasses are polarised and meet or exceed industry standards. Be sure to read the UV protection label on any sunglasses you are considering to see if the glasses are in compliance.UV protection blocks dangerous ultraviolet light from reaching your eyes. Both UV-A and UV-B rays are harmful to the eyes as well as skin. Polarization does not block UV rays. A separate material must be added to polarized glasses to absorb the harmful radiation.You will also need to ensure that the glasses you are considering are truly polarised. Many sunglasses have a test tag that you can use. Look through the glasses at the test tag, and then rotate the lenses 90 degrees. You should notice a significant darkening effect. If there is no test tag, look through two pairs of polarised glasses while rotating one pair 90 degrees. You should see an obvious blocking of light. Of course, most glasses are as advertised; but when paying extra for a particularly feature, it is good to be sure. All SHAYDZ sunglasses lenses are fully UV-A and UV-B protected.

 

Myth: Polarised Glasses Help In Driving

 This myth is basically true, depending on the angle of the sun. On bright, sunny days, the sun’s light reflects off the shiny metal of cars. Light also reflects off of the asphalt of many road surfaces. Polarised glasses can block some of the reflected light, reducing dangerous glare and making driving safer.

However, polarised sunglasses will have little effect when the sun is in certain positions in the sky. Motorcycle riders should avoid polarised glasses. The polarized filter combined with the darkening effect can make it difficult to distinguish details of the road surface. An oil slick or other hazard is potentially dangerous and may go unnoticed by a motorcyclist wearing polarized sunglasses.

 

 Myth: Polarised Sunglasses Make it Difficult to See LCD displays.

 This myth is completely true. When the display is viewed from certain angles, it may actually disappear. This has to do with the nature of the liquid crystal display (LCD). The light is polarised in such a way that the polarized glasses can make it disappear entirely. Always remove your polarised glasses before using an ATM or other LCD display.

 

Myth: Polarised Sunglasses Allow Boaters to See Through Water.

This is partially true.

 

Due to the nature of water’s reflection of light, polarised  lenses can make it easier to see underwater objects. The polarizing filter is vertical, while most of the reflected light of the water’s surface is horizontally polarised. The polarised glasses, therefore, can dramatically reduce glare from the water.Additionally, polarised glasses cut the reflected light from other objects such as rocks. The light below the water’s surface is polarised vertically, so the vertically polarized glasses make the water appear darker. However, the lack of reflected light makes the water seem more transparent. Of course, the angle of the sun affects the amount of light that is polarized, thus affecting the ability to see more clearly. Polaried glasses are a widely popular option in today’s market. Polarised glasses are able to reduce glare and improve vision in bright conditions. However, like any other product, polarised glasses have their advantages and disadvantages. Take the time to become educated about the way polarised sunglasses work. By being an informed consumer, you will be able to decide whether polarised glasses are right for you.

*sourced by Everyday Health