What lenses are better for sunglasses

　　1. Glass sunglasses lenses. Glass lenses were previously the most commonly used material for sunglasses, but they were heavy, fragile, and expensive to make, so their use was gradually reduced. However, the glass is scratch-resistant, and if the lens is made of hardened glass or crystal, there will be no scratch marks without encountering diamonds and granite. For wealthy high-end people, glass lens sunglasses with better optical energy are what they are after.

　　2. Resin sunglasses lenses. Friends who often wear glasses must have heard of plastic lenses, but what exactly are plastic lenses? Resin (CR-39) is actually a phenolic structure of the chemical, which is refined from the phenolic components in petroleum, especially light weight, high temperature resistance, strong impact resistance, and can effectively block ultraviolet rays and other functions. The great advantage of plastic lenses for sunglasses is that they are easy to color, and many fashionable sunglasses take advantage of the characteristics of plastic lenses for coloring. However, plastic lenses are weak and not impact-resistant. This type of sunglasses has a wide range of use and strong decorative effect, making it a good choice for fashion people.

　　3. Nylon sunglasses lenses. Nylon sunglasses are used in brand sunglasses and high-quality big-brand sunglasses, it has high elasticity and excellent optical quality, impact resistance is extremely strong, nylon lenses were invented as eye protection lenses were applied, with professional protective functions. However, nylon lenses have poor wear resistance and high production costs. These sunglasses are more suitable for people who use professional protective glasses.