Impact resistance space eccentric PC lenses: eccentric lenses are all made of PC, PC space material is a kind of advanced material that widely used in aviation equipment; It is the world's most shockproof lens, it can prevent the lens broken during motion, making sports safer; It's also the world's thinnest lenses. It features super light, high temperature resistant, high optical transparency, impact resistant and low birefringence, uv protection and so on; Resistance to impact is 12 times than resin lenses, and 60 times than glass lenses; Can effectively cut off ultraviolet rays into 100% UV resistance; It is widely used in aircraft, bulletproof glass, the astronauts mask purposes in early times.