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Molded plastic lens

  • US 6,052,232 A
  • Filed: 04/29/1998
  • Issued: 04/18/2000
  • Est. Priority Date: 05/02/1997
  • Status: Expired due to Term
First Claim
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1. A plastic lens molded from a transparent thermoplastic resin, comprising:

  • a lens body; and

    an annular portion integrally formed around said lens body, said annular portion having an annular surface, said annular surface comprising a first positioning surface that extends perpendicularly from a peripheral outer edge of a lens surface of the lens body with respect to an optical axis of said lens body, and a peripheral cylindrical surface, said peripheral cylindrical surface comprising a second positioning surface that extends perpendicularly with respect to said first positioning surface, such that a projecting right-angled annular corner portion, defined by an intersection of an extension of said first positioning surface and an extension of said second positioning surface, is eliminated, said first positioning surface serving to define a position of said lens body along the optical axis when assembled, said second positioning surface serving to define a position of said lens body in a direction perpendicular to the optical axis when assembled.

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