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Progressive addition lenses

  • US 6,183,084 B1
  • Filed: 07/30/1998
  • Issued: 02/06/2001
  • Est. Priority Date: 07/30/1998
  • Status: Expired due to Fees
First Claim
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1. A lens having an astigmatism caused by at least one surface of the lens, the lens comprising a front surface and a compensating surface wherein the compensating surface compensates for the lens astigmatism, the compensating surface comprising a plurality of segments wherein each of the plurality of segments is defined by a tenth order x, y polynomial with Zernike coefficients.

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