Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Munavvar Tahir Hussain0
Sanjay Ram Swaroop Argal0
Date of Patent
June 21, 2016
0Patent Application Number
133925740
Date Filed
August 25, 2010
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A multifocal lens device is disclosed. The device comprises a lens body being formed with a plurality of concentric annular zones separated by slanted steps. The concentric zones effect both diffraction and refraction of incident light, while the steps are substantially devoid of any diffractive or refractive power.
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