The Difference Between Polarized and Unpolarized Sunglasses

August 02,2022

Polarized sunglasses are a type of sunglasses. There are three types of polarized light, namely linear polarized light, elliptical polarized light and circular polarized light. Generally, the so-called polarized light refers to linearly polarized light, also known as plane polarized light. The vibration of this light wave is fixed along a specific direction, the propagation route in space is a sine curve, and the projection on the plane perpendicular to the propagation direction is a straight line.


The plane composed of the vibration direction and the propagation direction of linearly polarized light is called the vibration plane, and the plane perpendicular to the vibration direction and including the propagation direction is called the polarization plane. By passing natural light through a polarizer, linearly polarized light can be obtained, which is often used in crystal optics research.




The difference between polarized and unpolarized sunglasses


Polarized and non-polarized sunglasses work differently. Non-polarized sunglasses weaken the light, but there will also be refracted light into the eyes; while polarized lenses will refract the light and only absorb the reflected light of the object itself, which can play a seductive role.


Polarized sunglasses and non-polarized sunglasses work differently. When wearing non-polarized sunglasses, it will be difficult to distinguish between red and green, and wearing them while driving will become a traffic hazard. The polarizer is based on the principle of polarized light, and the object seen after wearing the polarizer will not change color.


Polarized and non-polarized sunglasses provide different levels of UV protection. Non-polarized sunglasses have a low blocking rate, while polarized lenses can achieve a 99% blocking rate.


Last few words


In general, non-polarized sunglasses can only reduce the intensity of light, and cannot effectively remove reflections from bright surfaces and glare from all directions, while polarized lenses can effectively block UV rays and reduce the intensity of light. In daily driving, we should wear polarized sunglasses in order to block the sun's rays for safety reasons. It's safety for yourself and safety for others.