Select a Heart sunglasses

China Product




   Sunglasses prices vary widely, finders will be able to buy more than ten yuan, while in the eyeglasses store, the hundreds of hundred dollars. So, in the end product itself, how much gap? What are the factors to consider to buy sunglasses? UV protection is an essential feature?

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Material from the different prices in different price point of view, boutique resin sunglasses lenses are also the cheapest of the sixties and seventies yuan, a maximum of two hundred dollars. Stall on the sunglasses starting from 10 yuan. Why such a big price difference, in addition to operating costs, there are brands of factors, most importantly, lenses and frames in different materials. Optical shop, according to the relevant personnel, sunglasses, lenses of ordinary plastic film lenses, resin lenses and the use of polarizing technology lenses, at sidewalk stands, many cheap sunglasses films are mostly film, while the professional optical shops are mostly resin, its optical permeability better than the film. The polarized lenses grade even higher level, prices are also slightly more expensive. cotton chenille

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Lens quality standards, according to quality control personnel, the quality of the lens, the state has standards, including the light permeability, traffic signal transmittance, ultraviolet transmittance ratio. Sunglasses can be divided into three types: light-colored sunglasses, sun mirror, and special-purpose sunglasses (skiing, mountain climbing, etc.).



Popular sunglasses mainly refers to a light-colored sunglasses, require light transmission ratio greater than 40%, and asked wavelength 290 ~ 315nm UV transmittance is less than equal to 30%.



For the anti-UV, quality control personnel believe that even ordinary glass, part of the film can also filter ultraviolet light, while the special treatment of the lens for more than 80% UV protection, so the election can consider choosing sunglasses by adding anti-UV lens material, If we think the price is too high, you can also select ordinary lenses, it can also prevent a portion of ultraviolet light injection.



According to Lian Xing frame the election for many people, wearing sunglasses mainly for aesthetics, therefore, selected according to their characteristics of a suitable Lianxing sunglasses is very important. Of course, different programs have different effects, the following programs are available for reference: Round face, square glasses frame the election, you can make your face look a little angular. Is best not to choose the radio frame, or make your face appear more round.



Inverted triangle face and jaw taper to avoid wearing large glasses frame, otherwise it will exaggerate the amount of the Department, and the choice will be small visual spectacle frames will play a role in narrowing the width of the forehead.



Triangular face, narrow forehead, this Lian Xing, such as selecting the square frame, it will make your forehead look narrow width of some, in order to coordinate the facial contour.



If it is biased in favor of a square face, oblong, you can use some of the more wide frame, vision can be reduced to play the role of Lian Xing. If Lian Xing is not too long may make use of more refined small frame, for example, the smaller oval-shaped frame lenses can make the face look soft number.