The scratch-resistant and wear-resistant materials of sunglasses mainly include glass, nylon and resins treated with special coatings, etc. The following is an analysis of these materials:
Glass material:
Advantages: Glass lenses have outstanding optical performance, high clarity, can accurately refract light, and have extremely high surface hardness, thus having excellent scratch resistance.
Disadvantage: Glass lenses are relatively heavy and may exert certain pressure on the bridge of the nose when worn. Meanwhile, its fragile nature makes it prone to breaking when impacted, which may cause harm to the eyes.
Nylon material
Advantages: Nylon lenses have excellent impact resistance and clarity, are lightweight and comfortable to wear. Meanwhile, nylon material also has a certain degree of wear resistance and can resist minor scratches during daily use.
Disadvantages: The wear resistance of nylon lenses may be slightly inferior to that of glass, and the production cost is relatively high, so the price is relatively high.
Resin material (treated with special coating) :
Advantages: Resin lenses themselves are lightweight, highly impact-resistant, not easy to break, and relatively comfortable to wear. Through special coating treatments, such as hardening coatings, the wear resistance of resin lenses can be significantly enhanced, enabling them to withstand more scratches and wear.
Disadvantage: Resin lenses that have not undergone special treatment have relatively weak wear resistance and are prone to scratches. However, after coating treatment, this problem can be effectively improved.
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