The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 08, 2011
Filed:
Dec. 25, 2007
Ronald D. Blum, Roanoke, VA (US);
William Kokonaski, Gig Harbor, WA (US);
Venkatramani S. Iyer, Roanoke, VA (US);
Joshua N. Haddock, Roanoke, VA (US);
Mark Mattison-shupnick, Petaluma, CA (US);
Ronald D. Blum, Roanoke, VA (US);
William Kokonaski, Gig Harbor, WA (US);
Venkatramani S. Iyer, Roanoke, VA (US);
Joshua N. Haddock, Roanoke, VA (US);
Mark Mattison-Shupnick, Petaluma, CA (US);
PixelOptics, Inc., Roanoke, VA (US);
Abstract
Embodiments of the present invention relate to a multifocal lens having a mostly spherical power region and a progressive optical power region. Embodiments of the present invention provide for the proper alignment and positioning of each of these regions, the amount of optical power provided by each of the regions, the optical design of the progressive optical power region, and the size and shape of each of the regions. The combination of these design parameters allows for an optical design having less unwanted astigmatism and distortion as well as both a wider channel width and a shorter channel length compared to conventional PALs. Embodiments of the present invention may also provide a new, inventive far-intermediate distance zone and may further provide for increased vertical stability of vision within a zone of the lens.