Progressive addition lenses with varying power profiles

  • US 6,199,984 B1
  • Filed: 03/17/1999
  • Issued: 03/13/2001
  • Est. Priority Date: 03/17/1999
  • Status: Expired due to Term
First Claim
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1. A spectacle lens comprising a first surface having a first channel and a first channel power profile and a second surface having a second channel and a second channel power profile, wherein the channel power profile of the lens is the vector sum of the channel power profiles and the first channel and the second channel are displaced.

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