Here we make a match experiment: This is the three kinds of the same brand, same data, but different shades of brown sunglasses. Test results indicate, the three curves eventually reach the same point on a coordinate, that these three anti-UV sunglasses are the same function, we can see, not anti-UV sunglasses, and the color depth of the mirror has nothing to do with the lens information about the consumer, if the sunglasses in the consumer attended the UV data, it is the function of sunglasses with UV protection, so that when the general has betrayed the mirror UV identity, but due to the current processing limitations, sunglasses function of UV to reach the highest 97%, less than 100% of base, so when you see the logo of the sunglasses are UV100% in practice is the fabled; determine whether the anti-UV sunglasses, in addition to its identity with or without UV , you can also see the connection box to the edge of the lens can be lubricated, marginal lubrication information for the resin lens, this lens is a strong function of UV, wavy edge of the lens data of ordinary glass lens, this lens UV functions not only poor, but also when the device is easy to produce the degree of our eyes is harmful.
There are two mirrors, a resin, a glass, to identify ways as well: a resin film or glass to see the severity of the resin light, heavy glass; also be able to knock his hand, listening to the sound. Sunglasses not only just good enough UV light, there are several requests. Good sunglasses should not be the first degree, and now on the market some of the poor quality of the sunglasses because of the use of information and technology standards are not fit, so lead to a lifetime of local production to come out with sunglasses degree, this degree is very small, easy to be ordinary found that, if the long-term wear will have to hurt our eyes.
