Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Peter Donald Klepp0
Date of Patent
March 8, 2011
0Patent Application Number
118791240
Date Filed
July 16, 2007
0Patent Primary Examiner
Patent abstract
The invention is directed to a method for illuminating an object and projecting its image on a ground glass screen. Optical comparators conventionally use incandescent illumination, either mercury arc or halogen. The use of an array of high intensity LED devices, provides many options for packaging the required optical components used in comparators.
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