lens material
Date:2023.03.08 Views:421
Material classification.
Glass lenses include optical glass lenses and high refractive index lenses (commonly known as ultra-thin lenses) with high hardness and good wear resistance, generally their quality and various parameters do not change over time, but the impact resistance and weight of glass lenses are slightly inferior to resin lenses.
Resin lenses are generally much lighter than glass lenses and have better impact resistance and UV protection than glass lenses, but their surface hardness is lower and they are more easily scratched. Resin lenses and coated lenses because of their soft characteristics, so usually should be careful not to let the mirror surface direct contact with hard objects, scrubbing is best first cleaned with water (or mixed with a small amount of detergent), and then with a special test cloth or high-quality cotton paper to absorb the water droplets on the glasses lens. In addition, in places with poor environmental conditions should be careful with coated lenses, so as not to stain the dirt difficult to clean.
Cosmic (PC) lenses: high refractive index, solid, but easy to wear. Mostly used in eyeglass lenses for small children, frameless assembly or eye protection for athletes.
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