Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2006-11-09
2010-10-19
Feely, Michael J (Department: 1796)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S159000, C351S166000, C351S177000, C427S164000, C427S407100, C428S423100, C428S500000, C428S522000
Reexamination Certificate
active
07815308
ABSTRACT:
The present invention relates to an optical article, in particular an ophthalmic lens comprising a substrate, a coating that includes at least one photodegradation-sensitive dye, and a photodegradation protection (anti-UV) coating for protecting the coating containing at least one photodegradation-sensitive dye, the photo-degradation protection coating comprising a blend of acrylate oligomers and monofunctional or multifunctional acrylate monomers, at least one UV absorber and at least one photoinitiator. This anti-UV coating used is particularly suitable for an ophthalmic lens in which the polarizing function is provided by a bilayer system, one layer of which comprises liquid crystals combined with dyes, and more particularly dichroic dyes. Advantageously, the anti-UV coating according to the invention is combined with an oxygen barrier layer.
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Fanayar Myriam
Lesartre Noémie
Essilor International (Compagnie Generale d'Opitique)
Feely Michael J
Occhiuti Rohlicek & Tsao LLP
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