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:
Sep. 16, 2003
Filed:
Apr. 24, 2002
Berthold Kessler, Greifenstein-Arbonn, DE;
Bert Schürmann, Gaggenau, DE;
Precitec KG, Gaggenau-Bad Rotenfels, DE;
Abstract
The invention concerns a method which can be carried out with a sensor device, for monitoring a laser machining operation to be performed on a work piece ( ), in which for quality assurance with a local-resolution receiver assembly ( ) a given field of observation ( ) is selected in the region of the interaction zone between laser beam ( ) and work piece ( ), in which radiation coming from the selected field of observation ( ) is detected with a radiation-sensitive receiver ( ) which delivers an electrical signal corresponding to the detected radiation, in which the electrical signal is filtered in a signal processing circuit ( ) in order to detect rapid and/or short, fault-related changes in intensity of the detected radiation, and in which the filtered electrical signal for the detection of faults during the laser machining operation.