Anti-ultraviolet radiation glasses usually be divided into ray ban outlet sunglasses polarizer two, the sunglasses we usually familiar for blocking the sun and UV tinted glasses. In our daily life, in addition to the sun and other ultraviolet light through uneven road surface, water and other places will have irregular diffuse reflected light, commonly known as "glare". The emergence of the human eye would glare discomfort and fatigue and impact depending on the material clear polarizer is to effectively filter out the glare of sunglasses in the market, then what difference sunglasses and polarizer how? Here, I will introduce the identification method:

Vertically stacked two cheap ray bans polarizing lenses, the lens will appear opaque phenomenon. The reason is that the special design of the polarizer lenses only allows parallel light through the lens to the vertical stacking of the two lenses when the majority of the light is blocked. Everyone at the time of purchase, as long as such a simple operation, it can immediately know the authenticity of the product is good or bad.
The time of purchase will generally distinguish the identification plate polarizer the naked eye without the black stripes, but wear the polarizer look you do not see with the naked eye can see the black stripes, sunglasses is not there.
In addition, to the sun can also experience specific apparent than ordinary sunglasses in the sunlight, the polarizer will comfort many. Of course, the difference between the polarizer and sunglasses evident in the price, the fake ray bans polarizer prices in the market in a few hundred yuan, and professional outdoors the polarizer varies from thousands of many thousands of thousands.