Learn More About Polarized Sunglasses
View PDF | Print View
by: ottidid
Total views: 8
Word Count: 544
The light coming from the Sun is not polarized. However, when it touches any flat surface such as a road or smooth sailing water it gets split into two components, horizontal and vertical one. The horizontal component gets reflected and as the surface is smooth, the reflection from many such rays creates an intense glare which obstructs the view when looked through the regular sunglasses.
For many years, fishers and boatmen have used a special kind of sunglasses which allow them to see through the vast sea waters even when there is a tremendous amount of glare. These are called as Polarized Sunglasses. These days, more and more people are opting for the same due to the additional advantage offered by them BESIDES the usual eye-protection. Skiers, joggers, bikers are thus the natural customers of the same. Let us find out the technology behind these wondrous creations.
Polarized sunglasses, on the other hand, employ a special type of glass whose polymers are oriented in vertical direction and thus completely cut the horizontal glare rays. The results from this simple trick are astounding. Apart from the protection from annoying and even dangerous glare, one gets all the benefits of a regular sunglass too.
Today, as with many other innovations, the polarization technology comes in many attractive packages. One can easily find designer polarized sunglasses, for adventure sports and many others. Most of the online shopping sites offer fabulous discounts on polarized sunglasses. Apart from mere protection from light and glare, specialized polarized sunglasses have entered the market. One of them is known as Polarized ‘progressive lenses’ which are perfect for someone who is suffering from presbyopia, but is outdoor enthusiast.
There is some debate over how much the polarized sunglasses actually prove useful for surfaces covered with snow. As snow too is a smooth surface it reflects a great amount of light and thereby can hamper the visibility in an environment fully covered in snow. A group of experts argue that like other environments, polarized sunglasses will reduce the glare and will improve the visibility. Other group says that they have a disadvantage of not providing enough contrast and therefore they may not be beneficial for skiers. The eye cannot distinguish between patches of ice and moguls due to the poor contrast. This can prove dangerous, especially in somewhat low light conditions.
These days, many sunglasses claim to be polarized but in truth they are not. There is a simple test which will enable you to determine the claim. Find any surface which is reflective (bonnet of a car, for example) and look towards it through one of the polarized lenses. Then, slowly rotate the glasses to an angle of 90 degrees, while continuously observing the degree of reflection. If the glasses are indeed polarized, you should see a significant reduction glare as you rotate the glass. If such is not the case, then you have been min-informed.
When purchasing a polarized sunglass, look out for additional feature such as scratch-resistance coating. This is essential when you plan to go for hiking. If your main outdoor activity revolves around water, investing in special swimmers polarized sunglasses makes sense.
About the Author
o jordan is author of article written on polarized sunglasses & designer polarized sunglasses. For more information, please visit :www.polarizedsunglassesonline.com
Rating: Not yet rated