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Ophthalmic lens with multiple phase plates

  • US 8,506,075 B2
  • Filed: 04/16/2012
  • Issued: 08/13/2013
  • Est. Priority Date: 10/25/2004
  • Status: Active Grant
First Claim
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1. An ophthalmic lens, comprising:

  • an optic having an anterior surface, a posterior surface, and an optical axis, the optic having a refractive optical power;

    an inner diffractive region having a diffractive power configured such that the lens is able to direct light to a first focus configured to provide near or intermediate vision and a second focus configured to provide distant vision;

    surrounding diffractive region configured to change the overall resultant intensity of light directed to the second focus; and

    an outer refractive region having no diffractive optical power surrounding the diffractive regions and configured to direct light to the second focus, the outer refractive region having an aspheric shape configured to reduce an optical aberration.

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