The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2008
Filed:
Feb. 15, 2005
Stephen Neal Swaringen, Rockwall, TX (US);
Kelly Bruland, Portland, OR (US);
Andrew Wells, Portland, OR (US);
Stephen Neal Swaringen, Rockwall, TX (US);
Kelly Bruland, Portland, OR (US);
Andrew Wells, Portland, OR (US);
Electro Scientific Industries, Inc., Portland, OR (US);
Abstract
A method for calibrating a laser micro-machining system in three dimensions includes scanning a sample workpiece to determine the 3D surface, calculating the best fit surfaces to the scanned data in a series of steps, and storing the results so that subsequent workpieces can be calibrated to remove systematic errors introduced by variations in an associated material handling subsystem. The method optionally uses plate bending theory to model particulate contamination and splines to fit the 3D surface in a piecewise fashion to minimize the effect of local variations on the entire surface fit.