Polarized lens is lens that allow only light in a particular direction of polarization of natural light to pass through. It will darken things because of its light filter. In order to filter the harsh rays of the sun hitting water, land or snow in the same direction, a special vertical paint is added to the lens, called a polarizing lens. Best for outdoor sports such as sea sports, skiing or fishing.
Principle
The effect of polarizing lenses is to effectively remove and filter the scattered light from the beam. So that the light can be on the right axis into the eye to make the field of vision clear and natural. Be like the principle of shutter curtain, the light is adjusted to be in the same direction light and enter indoor, which makes scenery looks downy and not dazzling.
Application
Polarizing lenses, most of which appear in the application of sunglasses, are essential equipment for car owners and fishing enthusiasts. They can help drivers filter out head-on high beams, and fishing enthusiasts can clearly see fish floats on the water.
Imperfection
Polarizing lens can filter out many irregular light interference and avoid blinding and dazzling, but if the arc bend of the lens itself cannot be the optical standard refractive state, the polarizing effect will be weakened, affecting the authenticity of the image, also durability is poor.