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Progressive multifocal lens and manufacturing method of eyeglass lens and progressive multifocal lens

DC
  • US 6,019,470 A
  • Filed: 06/03/1997
  • Issued: 02/01/2000
  • Est. Priority Date: 11/24/1995
  • Status: Expired due to Term
First Claim
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1. A progressive multifocal lens capable of correcting a user'"'"'s vision and having a first major surface and a second major surface, where the first major surface is positioned closest to the user'"'"'s eye when the progressive multifocal lens is worn by the user, the progressive multifocal lens comprising:

  • a distance-vision region having a first refractive power;

    a near-vision region having a second refractive power; and

    a progressive region joining the distance-vision region and the near-vision region and having a refractive power that varies gradually;

    wherein the first major surface is a composite surface that comprises a progressive refractive surface comprising the distance-vision region, near-vision region, and progressive region; and

    wherein the first major surface includes a surface that corrects astigmatism.

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