Like sunglasses friend when choosing sunglasses will exist some doubts, sunglasses on the market price from a few yuan to thousands of yuan, distinguishing true or not, how should choose?
Especially the polarizer, more don't know where laid a hand on him, today just tell me the matters needing attention about polarizer to choose.
Primary consideration is polarized sunglasses quality is the first function of polarized sunglasses polarized uv protection and filtering, good polarized lenses that can stand in the way of more than 90% of the ultraviolet penetration, please select 'UV400' with the best polarized sunglasses block uv logo;
If worn cannot block ultraviolet light and polarizing filter function of inferior polarized sunglasses, such as dark sunglasses, in the dim light, with the human eyes eye pupil get bigger, into the eyes of ultraviolet (uv) increases, increases the damage of the human eye.
Long-term wearing will there be not authentic polarized sunglasses to wear comfortable;
If, after wearing uncomfortable, dizziness, headache, dry eyes, tingling feeling bad words please hurry up to take off;
Belong to the inferior or counterfeit sunglasses in general can cause dizziness, headache, general inferior lenses when making no technical and functional, the lens material is also very poor, choose inferior polarized sunglasses can protect your eyes, instead will cause the damage is not worth the cost.
Selection of polarized sunglasses to focus on frame protection function of polarized sunglasses in addition to uv protection, avoid light, filtering, dazzling glare basic functions, such as most polarizing sports sunglasses frames are veneered radian design, can effectively prevent wind and foreign bodies in the outdoors to the stimulation of the eyes, and the stiffness of the polarized lens degree and the material of frame flexible degree will consider whether it will produce harm to human body.
Depending on the choice of polarized sunglasses to real natural polarized sun glasses color choice should be the color of the surrounding environment of distortion, clear the edges of the objects and can effectively identify the different color lights for the principle.
Especially as the aviator sunglasses, ensure driving safety.
Lens color with gray, brown, green is good, because these color lenses of infrared, ultraviolet absorption is good, can improve visual contrast and clarity, under the condition of air pollution is serious, or foggy wearing effect is a plus.
About polarized sunglasses quality stand or fall of the identification of the classical optical shop will have sunglasses uv resistance ability of the size of the instrument, instrument tests, you can know whether the glasses in your hand.
In addition, test sunglasses quality stand or fall of simple method is: can use yanchao pen or ultraviolet light from the counterfeit detector, observing the sunglasses uv logo design on the yuan, if the poor quality of sunglasses, no barrier to ultraviolet ray, can still clearly see the uv logo design on the yuan, on the other hand, such as the quality is good, can't see.