Multifocal lens

  • US 7,289,260 B2
  • Filed: 08/30/2004
  • Issued: 10/30/2007
  • Est. Priority Date: 10/03/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. Apparatus for enhancing vision of a user having an eye that includes a retina, the apparatus comprising:

  • a focal modulation device, which is adapted to focus light from objects in a field of view of the user onto the retina while alternating between at least first and second focal states that are characterized by different, respective first and second focal depths, at a rate in excess of a flicker-fusion frequency of the user.

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