Polarized sunglasses and sunglasses are basically the same in terms of their UV protection ability. But as a driver, apart from the sunshine in front of you, sometimes the road reflection on the highway, the reflection on other car bodies, etc., may stimulate the eyes. Polarized sunglasses are the first choice for driving because they can filter light from different angles.
Due to the fact that polarized lenses only allow polarized waves that vibrate in a certain direction to pass through, they can also reduce the transmission of visible light and improve the comfort of the human eye in strong light environments.
How to distinguish whether it has a polarization function? Generally, the hanging label of polarized sunglasses indicates the use of polarized lenses, or there is a clear electrostatic label on the lenses that indicates the material of the polarized lenses. In regular stores, there are polarizer test cards available, and we can use them for testing. Because some patterns on the test piece can only be displayed through a polarizer.
We can place the lenses of two pairs of sunglasses perpendicular to each other to observe objects. If the line of sight is pitch black, it indicates that both pairs of sunglasses have a polarizing function. If the object can still be seen clearly, it indicates that at least one pair of sunglasses does not have a polarizing function. This is because polarized light is a transverse wave, and its vibration direction is perpendicular to the propagation direction. When two polarized light plates are perpendicular to each other, the emission intensity is almost invisible to the transmitted light.
