The difference between polarized lenses and ordinary sun lenses

Now anti-ultraviolet radiation glasses are usually divided into two types: sunglasses (sunglasses) and polarized glasses. Sunglasses are colored glasses that are used to block sunlight and ultraviolet rays that we are usually familiar with. But in our daily life, in addition to sunlight and ultraviolet rays, when light passes through uneven roads, water surfaces, etc., irregular diffuse reflections will be produced, commonly known as "glare". The appearance of glare will cause discomfort and fatigue to the human eyes and affect the clarity of vision. Polarizers are sunglasses that can effectively filter out glare. So how do you distinguish between sunglasses and polarizers in the market? Here's how to tell the difference:

If two polarized lenses are stacked vertically, the lenses will appear opaque. The reason is that the special design of the polarizer lens only allows parallel light to pass through the lens, and when the two lenses are stacked vertically, most of the light is blocked. When you buy, just such a simple operation, you can immediately know the authenticity of the product and whether it is good or bad.

There is usually an identification plate for identifying polarizers when you buy them. There are no black stripes to the naked eye, but you can see black stripes that you can’t see with the naked eye when you wear polarizers. Sunglasses will not have them.

In addition, you can also go to the sun for a specific experience. In the sun, polarized glasses will be significantly more comfortable than ordinary sunglasses. Of course, the difference between polarizers and sunglasses is also clearly reflected in the price. At present, the price of general polarizers on the market is around a few hundred yuan, while the price of professional outdoor polarizers ranges from thousands to tens of thousands.