Polycarbonate Lenses: What You Should Know
Polycarbonate lenses are one of the lightest, thinnest and safest lenses at the request moment. Utmost all lenses are now made from polycarbonate polymer. The polycarbonate material was developed in the 1970s to be used for aerospace operations. Polycarbonate is still the favored material used for space shuttle windshields and helmet bills of the astronauts. It was not until 1980 when polycarbonate was introduced into eyeglass lenses because of the demand for featherlight and impact-resistant lenses. The lenses generally considered 'coke bottle bottoms' are considered to be the once generations of lenses. One remedy to use this new material is because these lenses are generally thinner and lighter than utmost conventional glass or plastic and are the favored choice in utmost eyewear. Former lenses were made from a molding process where the liquid plastic was moldered and ignited for a long period. The liquid would harden and would ultimately produce the lens. P...