Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 18, 2010
Patent Application Number
11773682
Date Filed
July 5, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A vision enhancement device is provided that is made of a lens material that has a first polarization orientation in a central portion and a second polarization orientation substantially normal to the first polarization in an annular portion surrounding the central portion. The central portion has a prescription for one of near vision and distance vision. The annular portion has a prescription for the other of near vision and distance vision.
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