Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Stephan J. Pankratz0
Michael S. Groess0
Date of Patent
October 30, 2007
Patent Application Number
10938006
Date Filed
September 10, 2004
Patent Citations Received
Patent Primary Examiner
Patent abstract
A method includes providing a polymerized optical film structure having a microstructured surface, forming a scratch having a length on the microstructured surface to form a scratched optical film, illuminating the scratched optical film to form an illuminated scratch, measuring a plurality of scratch contrast ratio values along the length of the illuminated scratch with a detector, and determining a maximum scratch contrast ratio from the plurality of scratch contrast ratio values along the length of the scratch.
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