Teach you a simple way to identify polarized sunglasses

u003cbru003eRecently, many friends have asked whether there is a way to distinguish polarized sunglasses. After all, almost all sunglasses now claim to have a polarized function, but how many of them can actually achieve polarization? Many friends have bought so-called polarized sunglasses. , But it is very likely just a pair of cheap colored glasses. Here I would like to introduce you a relatively simple and feasible method, so that you can identify for yourself whether your polarized sunglasses are 'polarized' or 'deceived'. The method of inspection requires that the computer or TV at home is an LCD screen, which I believe is easy to satisfy. First, face the lens of the sunglasses horizontally to the LCD display (horizontal). At this time, the lens of the sunglasses does not change; then turn the sunglasses clockwise up to a 45 degree angle with the screen, and then you will see the lens. The color becomes darker. As you continue to turn the sunglasses, the lens display returns to normal, which proves that the pair of sunglasses you have has a polarizing effect. At the same time, we can also see if our polarized sunglasses can protect against ultraviolet rays, which requires the use of ultraviolet lamps to check the authenticity of banknotes. Face the lens of the sunglasses horizontally to the hundred-dollar bill, and use an ultraviolet light to illuminate the watermark of the hundred-dollar bill through the lens. Usually, the watermark will be quite obvious. After passing through the lens, if the light transmittance is extremely low, then congratulations, Your polarized sunglasses have UV protection. I don’t know how many friends will immediately pick up their own sunglasses to try it out, but I still hope that everyone will check when choosing sunglasses to avoid harm to their own interests. It is recommended that everyone buy it at a regular eyeglass store or eyeglass mall. The authenticity is the guarantee of health! Only in this way can you have health and beauty at the same time! Related reading: Sunglasses Polarized Sunglasses
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