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US 6,887,402 B2Granted
Method for transferring from a mold a hydrophobic top coat onto an optical substrate
AssigneeEssilor International (Compagnie General d'Optique)
InventorsKarl A. Klemm, Julie A. Fairbank
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Abstract
The invention relates to a method for forming from a mold optical articles. These methods are particularly useful in forming ophthalmic articles such as ophthalmic lenses, having a hydrophobic top coat thereon. Ophthalmic articles produced by these methods are also part of the invention.
Claims29
A method for transferring a hydrophobic top coat onto an optical substrate comprising the steps of:
- (a) providing a two-part plastic mold having opposed optical surfaces defining therebetween a molding cavity;
- (b) forming on at least one of the optical surfaces of the mold a hydrophobic top coat;
- (c) filling the molding cavity with an optical substrate, liquid, curable composition;
- (d) curing the liquid curable composition, and
- (e) disassembling the two-part mold for recovering a coated optical article comprising an optical substrate having deposited and adhered on at least one of its faces.
2 more elements
Dependencies are inferred from the claim text.