Method of making lens with colored portion

  • US 6,248,266 B1
  • Filed: 08/11/2000
  • Issued: 06/19/2001
  • Est. Priority Date: 08/11/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of making a lens with a colored portion, comprising:

  • introducing a lens-forming monomer mixture and an ionic colored material to a lens mold;

    applying an electrical field to the monomer mixture and the colored material, whereby the colored material migrates in response to the electrical field to form a desired pattern; and

    curing the lens-forming monomer mixture with the colored material forming a desired colored pattern in the lens.

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