Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael R Feldman0
James E Morris0
Date of Patent
July 29, 2008
0Patent Application Number
112111000
Date Filed
August 25, 2005
0Patent Primary Examiner
Patent abstract
A diffractive coupler coupling light between an opto-electronic element and a waveguide minimizes variation in coupling over an offset range, while providing good coupling efficiency. The offset range may be along the optical axis and/or radial. The diffractive coupler has a long depth of field and no best focus.
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