Sunglasses Lenses Have Differences in Material

Sunglasses lens materials are roughly divided into five categories: AC, PC, CR39, glass, and nylon. Among them, AC lenses: the lowest cost, brittle material, and average optical indicators; PC lenses: the cost is higher than AC, not easy to crack, and the optical indicators are average.
CR39 lens: higher cost than the previous two, with better optical index stability and better clarity; glass lens: high clarity, excellent optical index, strong wear resistance, heavier weight, easy to be brittle; nylon lens: The clarity is second only to glass lenses, and other optical indicators are the best.