Method for forming coated plastic optical elements

  • US 5,049,321 A
  • Filed: 01/05/1990
  • Issued: 09/17/1991
  • Est. Priority Date: 03/25/1988
  • Status: Expired due to Term
First Claim
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1. A process for producing a coated ophthalmic lens, the process comprising:

  • applying a coating composition to the face of a mold, the coating composition including substantially only polymeric reactants having at least triacrylate functionality, a photoinitiator and a polymerization inhibitor reactive with oxygen and in an amount insufficient to affect substantial curing of the coating composition and in an amount insufficient to substantially affect abrasion resistance of the coating;

    subjecting the coating to ultra-violet radiation in oxygen environment such that the reactants are substantially polymerized so that the coating is in a hard abrasion resistant state with sufficient acrylate functionality at a lens/coating interface for further reaction;

    filling the lens mold with a lens-forming material;

    permitting the lens-forming material to harden and react with the acrylate groups at the lens/coating interface; and

    removing the hardened lens with coating from the mold.

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