Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 5, 2010
Patent Application Number
12009424
Date Filed
January 18, 2008
Patent Primary Examiner
Patent abstract
An explicit relationship is developed between the ratio of average interferometric modulation produced by diamond-like carbon (DLC)-coated magnetic-head surfaces and the thickness of the DLC layer. Accordingly, the thickness of the DLC layer is calculated in various manners from modulation data acquired for the system using object surfaces of known optical parameters.
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