Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
William H. Welch0
Charles S. Koehler0
Eric G. Johnson0
Robert D. Tekolste0
Alan D. Kathman0
Date of Patent
August 3, 2010
0Patent Application Number
124532290
Date Filed
May 4, 2009
0Patent Primary Examiner
Patent abstract
An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.
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