Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Valdemar Portney0
Date of Patent
July 11, 2006
0Patent Application Number
112730960
Date Filed
November 14, 2005
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A multifocal ophthalmic lens includes a lens element having anterior and posterior surfaces with a central aspherical refractive zone disposed on one of the anterior and posterior surfaces; and a diffractive bifocal zone disposed outside of the aspherical refractive zone. The central aspherical refractive zone may be disposed on the anterior surface and the diffractive bifocal zone may be disposed on the posterior surface.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
