Patent ID: 7495191
Filing Date: 2009-02-24
Classification: B23K,G01N

Abstract:
1. A laser treatment apparatus configured for treating a workpiece, comprising: a first laser generation device configured for generating a first laser beam having a first wavelength; a first optical assembly configured for directing the first laser beam onto a first target of the workpiece, the first target having an absorption wavelength matching with the first wavelength; a second laser generation device configured for generating a second laser beam, the second laser beam having has a second wavelength different from the first wavelength; a second optical assembly configured for directing the second laser beam onto a second target of the workpiece, the second target having an absorption wavelength matching with the second wavelength; a third laser generation device configured for generating a third laser beam to selectably strike onto one of the first target and the second target of the workpiece; and an optical detection device configured for detecting a reflection part of the third laser beam reflected from the workpiece and for outputting a monitoring signal based upon the detected reflection part of the third laser beam; wherein the at least one of the first optical assembly and the second optical assembly comprises