OPHTHALMISCHE GLASLINSEN MIT EINFAERBBARE BESCHICHTUNGEN.

摘要

A coating for application to a glass lens surface characterised in that, at a thickness of no more than 10 microns (10-5m) in conjunction with an organic dye operable in tinting organic plastic lenses, the coating imparts a visible transmission to the glass lens of less than 50%, demonstrates excellent resistance to abrasion, is sufficiently adherent to glass to withstand boiling water and to withstand normal surface abuse and environmental stresses and is optically clear, and the coating consists essentially of an alkyl siloxane containing an effective amount of a dipolar silane selected from an ester-functional silane, a hydroxy-functional silane, an amino-functional silane, a carboxylic acid-functional silane and halide forms thereof is disclosed, as are lenses having such coatings and the production thereof.