Why are polarizers clearer than ordinary sunglasses?

Polarizing lens, also referred to as PL lens, is composed of two optical lenses with a tiny polarizing crystal with directional function. This tiny polarizing crystal can produce a very fine fence-like structure, allowing only light with the same vibration direction and gap to pass through. This selectively filters light from a specific direction. By filtering out many polarized light in diffuse reflection light, the intensity of external light is weakened, the sky is darkened and the contrast of blue sky and white clouds is increased. So as to improve the quality and clarity of the seen object. In addition, the polarizer can effectively improve the color saturation and visual contrast, thus making the color of the scene more pure. The difference between polarizer and sunglasses: Sunglasses are ordinary colored glasses that we are familiar with to keep out the sun. Ordinary sunglasses can only reduce the light intensity, but can not effectively remove the light reflection on the bright surface and glare in all directions. In our daily life, in addition to sunlight and ultraviolet rays, light will produce irregular diffuse reflection when it passes through roads, water surfaces and other places in disorder, commonly known as "glare". The appearance of glare will make people feel uncomfortable and tired, affect the clarity of things, and bring a lot of trouble to people's life and travel, especially to drivers. Because of its high cross filter layer, polarizer can effectively filter out all kinds of glare and ultraviolet rays up to 100%, which can not only reduce the light intensity, block glare, improve visual contrast and improve visual clarity. Previously, due to the manufacturing process, polarizers were only used as lenses for high-end cameras and camcorders, and there were few polarizers for sunglasses. How to distinguish between ordinary sunglasses and polarized lenses: There are many ways to distinguish polarizers, one of which is very simple: if two polarized lenses are vertically stacked, the lenses will be opaque. The reason is that the special design of polarizing lens only allows parallel light to pass through the lens, and most of the light is blocked when the two lenses are stacked vertically. When you buy, you can immediately know the authenticity and quality of the product by such a simple operation. Too many copies ... simply put, it's more expensive. It feels better to wear it in the sun. ...