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DEVICES, METHODS, AND SYSTEMS FOR IMAGE VIEWING

  • US 20070273983A1
  • Filed: 05/26/2006
  • Published: 11/29/2007
  • Est. Priority Date: 05/26/2006
  • Status: Abandoned Application
First Claim
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1. A lens element, comprising:

  • a dual aspheric lens substrate having a first surface and a second surface;

    a diffractive/Fresnel structure associated with the first surface; and

    wherein the diffractive/Fresnel structure has a cross-section having a substantially non-planar characteristic.

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