Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David G. Pelka0
William A. Parkyn0
Date of Patent
July 14, 2009
Patent Application Number
12126843
Date Filed
May 23, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
A linear Fresnel lens for LED illumination is configured initially by using a meridional flux-assignment method and is then corrected by assessing the three-dimensional flux distribution of individual facets. The facet angles are slightly altered as required to produce uniformity. A variety of specialized lens shapes are generated, such as for illuminating shelves in commercial refrigerator food-display cases. The lens shapes are suitably thin for economical production by extrusion.
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