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Composite lenses

  • US 5,702,819 A
  • Filed: 05/17/1996
  • Issued: 12/30/1997
  • Est. Priority Date: 03/18/1994
  • Status: Expired due to Fees
First Claim
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1. A composite plastic optical quality lens, comprising:

  • a plastic lens preform portion of optical quality material; and

    a cured plastic attached portion of a resin composition that is bonded to said plastic lens preform portion, said cured plastic attached portion having higher scratch resistance than said plastic lens preform portion, and said resin composition having a refractive index within about 0.05 units of the refractive index of said plastic lens preform portion.

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