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Composition for producing ultraviolet blocking lenses

  • US 6,939,899 B2
  • Filed: 12/23/2002
  • Issued: 09/06/2005
  • Est. Priority Date: 07/31/1997
  • Status: Expired due to Term
First Claim
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1. A lens forming composition, comprising;

  • a monomer;

    a photoinitiator that activates a co-initiator after being exposed to at least a portion of activating light during curing, wherein the co-initiator activates curing of the monomer to form the eyeglass lens, and wherein the co-initiator comprises an acrylyl amine; and

    a photochromic compound; and

    wherein the lens forming composition is curable by exposure to activating light having a wavelength below 400 nm to form a substantially clear and aberration free eyeglass lens in a time period of less than about 10 minutes.

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