Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Michael P. Toepel0
Date of Patent
September 28, 2010
Patent Application Number
10744127
Date Filed
December 24, 2003
Patent Primary Examiner
Patent abstract
A laser test card according to the present invention comprising a thin planar multi-layer material, which may be cut to a desired length and width, is exposed to a beam directed to the laser test card top surface from a laser under test, and reveals successive visibly contrasting layers under the top surface according to the incident laser beam energy at that particular point or any point of the X or Y dimension (cross-section) of the beam. In the preferred embodiment, several different layers of sharply different colors are used.
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