Eyeglasses come in different types. Some are for sight while some others are for style. Whatever be it, eyeglasses and their varieties are evolving. They include cat-shaped frames, blue line filters and many more. Polarized sunglasses belong to one such category where the eyewear is made to reduce glare. It could be from the surface of the water, snow or even a glass surface.
Glare in lenses can distort the actual colour and make it difficult for them to distinguish the object. Therefore sunglasses that are polarized make it less complicated. Moreover, they can be used while driving and also in some sports events. Thus, the participants can be sure of seeing and avoiding any hazards in front of them.
This article will talk about the working and advantages of sunglasses that are polarised.
Working of a polarised lens
Lenses that are polarized are available in a variety of colour combinations. Most of them are based on the material with which they are made. For instance, the polarisation level of a lens with a darker shade will be higher than the lighter ones.
It is a well-known fact that sunlight can be easily reflected or absorbed in all directions. However, on horizontal surfaces like water and land or even the hood of a car, the light tends to bounce off the surface. Later this is reflected in a similar horizontal direction. It can result in the making of a source of glare which can be very agitating. As a result, it can create discomfort in the visuals and end up in a binding ray.
Sudden glare during significant activities like driving can end up in hazardous situations. However, sunglasses that have polarised lenses can be a saviour in such instances. This is because they have a laminated filter. It can allow only vertical, horizontal light to pass through the lens. Moreover, it can block the light that is horizontally oriented so that the glare is thoroughly eliminated.
Advantages of a Polarised lens
- Reduce the strain that the eye can engage in
- It helps the user to have a true perception of colours
- Thoroughly eliminate the glare and thereby reduce the reflections
- Reduces the visual discomfort of any user
- Improves the clarity of vision and contrast
Polarized sunglasses are commonly available in brown and grey colours. However, there are options for various other colours, depending on the manufacturers. For example, they may include yellow, colours that are melanin, green and more.
How to know if the lens is polarised?
Even though the sellers can mark a glass to be polarised, they have to believe them blindly. There are some ways to check the lens for polarization if the user is very unsure. Try the following steps:
- Choose another sunglass which one is sure of being thoroughly polarised.
- But the lens that needs to be tested at an angle is 90 degree to the polarised lens.
- If the lenses, combined, turn very dark or nearly black, the sunglasses are polarised.
The user can also look at an LCD screen to check if the glasses are polarized. If it is a polarized lens, the screen would appear dark or black. It is unlike the regular tinted lens, which would be easier to look at.