How to choose sunglasses

Summer is coming, travel, usually go out shopping, outdoor recreation, who also missed a suitable oakley sunglasses cheap, both the strong sunlight, can also be a great fashion accessory, pretending to be cool essential for you to considerably .
How to choose sunglasses it? For many people who are not familiar with sunglasses, how to choose the satisfaction of sunglasses, many people have become tangled problem, eye color vision sunglasses Experts’ Advice and support for everyone here - how to choose sunglasses
First, choose sunglasses first thing to consider is the use of
If you are driving by car, you need to select the driving sunglasses, driving sunglasses are equipped with polarized function, filtered glare, and can increase the color contrast to make the traffic signals and signs more visible and clearly, the material on to have a certain toughness, not chipped or fracture, increased security.
If it is normal shade, that in the choice of sunglasses, the main consideration is the sunglasses shading effect and anti-ultraviolet function, the lens should be large, completely blocking the sun, UV to reach uv380 more.
Second, the sunglasses brand of choice
Sunglasses brand range from a few thousand dollars of imported top sunglasses brands, more than ten dollars to shop sunglasses brands, numerous. So, in the end how to choose sunglasses brand?
1, the domestic production of sunglasses has a formal national production license: Only through the national certification, product quality clearance of enterprises, the state will be awarded production licenses, if a sunglasses no production license, we cannot guarantee the quality or can be said those substandard products.
2, to a regular Web site or an authorized shop to buy, not because of freeloaders, fakes, it is not worth it.
3, choose discount oakley sunglasses brands according to their own economic circumstances, but do not because they are cheap, especially cheap sunglasses, do not buy. For example: eyewear online shipping, we can count on, postage remove the glasses is more than twenty dollars look like, , so that eyeglass lens itself is very poor, can damage eyes Health, wear prone dizziness, blurred vision, and even affect vision, but do not have the anti-ultraviolet function. Frame material is also prone to allergies or harms the skin. Soar!
4, the domestic good sunglasses brands: St. Paul, tyrannosaurus, Helen Keller, and so on. Foreign top sunglasses brands: Gucci, Prada, Chanel, etc., there are mid-range "flower umbrella, jeep" and so on, driving sunglasses of choice for "Pilkington." Sports sunglasses are the best domestic Scott brand.
Third, sunglasses material selection
(A) sunglass lens material selection
1, the glass: glass high transmittance, which is higher definition, but there are easily broken glass problem, so glass must be enhanced treatment, is safe (Pilkington brand is glass , and by the steel processing), the other is heavy glass lens compared to other lenses, the manufacturing process is difficult.
2, tac tablets: tac film is the most common polarized sunglasses lens material, each index is moderate, light transmittance than glass, but better than glass toughness, not break, can be more easily coating treatment.
3, nylon: Nylon film is now a lot of international big lenses are in use, the indicators are very good, light transmittance than glass, high temperature, natural UV protection. Flexibility and preferably, not break, but the cost is high.
(Two) Sunglasses Frame Material selection
1, Metal: mainly manganese-nickel alloys and nickel-copper alloy based. With anti-corrosion, high strength and good color features.
2, Ti: known as "space metal" than ordinary metal lighter 48%, anti-allergic, anti-corrosion.
3, tr-90: ultra-light and flexible with excellent characteristics, structural stability, impact resistance, not easy to break.
4, plate: characterized by high strength, light weight, durable, cheap oakleys sunglasses more beautiful styles.
5, plastic: light texture, not strong enough, the cost is low.
Fourth, shapes and colors frame the sun