A plastic lens molding apparatus. A first mold, having a concave optical surface, and a second mold, having a convex optical surface, are arranged so that the optical surfaces are opposed to each other, each of the optical surfaces having an apex. An adhesive tape is applied over both the first and second...http://www.google.co.uk/patents/US5213825?utm_source=gb-gplus-sharePatent US5213825 - Plastic lens molding apparatus
