Why you use the Polarized Lenses Sunglass?

Polarized Lenses are used in sunglasses to reduce glare from reflective surface such as the surface of a lake or the hood of a car. They accompolish this feat through a process called polarization, much like a venetian blind controls sunlight through a window.

Sunlight itself is not polarized-light from the sun will either be absorbed or reflected horizontally, diagonally or vertically. The problem this cause of fishermen and drivers lies in the horizontal reflectivity. Sunlight bouncing off a horizontal surface will strike the viewer s eyes at a simliar angle. This mean the glare from the surface of the water or the road or the car hood will be strong. Polarzied lenses have a  laminated surface containing vertical stripes. These stripes only allow vertically-polarized light to enter the wearer s eyes. Glare is eliminated because the horizontally-polarized light waves cannot bypass the polarized filter.

Polarized Lenses Sunglass Advantage:

1. Some wearers who use polarized lenses in snowy areas may find that they lose some contrast between snow and shaows.
2. A fishermen wearing polarized sunglasses can see below the surface of the water to search for schools of fish or hidden obstacles.
3. Drivers are no longer affected by a contant reflection of light from their hoods or the road ahead.
4. The polarized stripes reduce the amount of light entering the eye.

Polarized LensesSunglass Limitation:

Not suitable for regular eyewear, because the polarized stripes reduce the amount of light entering the eye. Sometimes will cause the distortions in liquid crystal displays LCD.