The raw material is solid heated to form a lens, so this type of lens will deform when overheated is suitable for high humidity heat. PC lenses have extremely strong toughness will break (2 centimeters can be used for bulletproof glass), so they are also known as safety lenses. With a specific gravity of only 2 grams per cubic centimeter, it is currently the lightest material used for lenses. The manufacturer of PC lenses is one of the world's leading manufacturers promoting Essilor, with its advantage being the non spherical treatment hardening of the lenses.

PVC lenses ordinary resin lenses are all thermosetting materials, which means that the raw materials are heated to a liquid state to form solid lenses. Pc film, also known as "space film" "cosmic film", is a thermoplastic material with a chemical name of polycarbonate. That is to say, the raw material is solid it is molded into a lens after heating, so this type of lens will deform after overheating, making it suitable for high humidity heat. The PC lens is extremely durable can indeed rupture (2 centimeters can be used for bulletproof glass), so it is also known as a safety lens. With a specific gravity of only 2 grams per cubic centimeter, it is currently the lightest material used for lenses.