Patent ID: 8288679
Filing Date: 2012-10-16
Classification: B23K

Abstract:
1. A method for aligning a processing laser beam to workpiece features, the processing laser beam comprising a predetermined wavelength for processing the workpiece features, the method comprising: propagating the processing laser beam along a propagation path through a scan lens to a workpiece; manipulating the processing laser beam so as to illuminate, through the scan lens, a selected region of the workpiece comprising an alignment target with the manipulated processing laser beam at the predetermined wavelength, wherein the selected region is larger than a reference laser beam spot of the processing laser beam provided through the scan lens; directing at least a portion of a reflection of the manipulated processing laser beam back through the scan lens to a camera for imaging the selected region of the workpiece; and based on an image of the selected region captured by the camera, determining a position of the reference laser beam spot relative to the alignment target.