| 20120249949 | Method for Dyeing Eyeglass Lenses and Colored Lenses - A method for dyeing eyeglass lenses, which comprise: a step of dyeing at least one surface of a transparent thermoplastic sheet; a step of curving the resulting sheet while heating into a lens-shaped product; and as necessary, a step of providing a power correction layer on the concave side in a unified state. The thermoplastic sheet is a sheet which consists of one material selected from among polycarbonates, acrylic resins, and polyamides and which has a thickness of 1.5 mm or less. Alternatively, the thermoplastic sheet may be a stretched thermoplastic polycarbonate sheet. Further, at least one surface of the thermoplastic sheet may be subjected to hard coating prior to the curving. In this case, the hard-coated surface serves as the convex side of a lens. | 10-04-2012 |
