Sensor device for detecting radiation from the region of a zone of interaction between a laser beam and a workpiece and device for monitoring a laser machining operation and laser machining head
First Claim
1. Sensor device for detecting radiation from the region of a zone of interaction (16) between a laser beam (13) and a workpiece (17) for monitoring a laser machining operation, in particular a laser welding operation, having a radiation-sensitive receiver arrangement (19), and an imaging device (11,14;
-
11, 24;
11, 34) which images a field to be observed from the region of a zone of interaction (16) onto the receiver arrangement (19), wherein the imaging device (11,14;
11, 24;
11, 34) comprises a focusing optical element (14;
24;
34) arranged in the working beam pathway (12) of the laser beam which diverts radiation from the region to be observed out of the working beam pathway (12) and focuses it onto the receiver arrangement (19).
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Accused Products
Abstract
The invention relates to a sensor device for detecting radiation from the region of a zone of interaction (16) between a laser beam and a workpiece (17) for monitoring a laser machining operation and a workpiece, in particular a laser welding operation, and a device for monitoring the laser machining operation, in particular the laser welding operation, and a laser machining head having such a sensor device. The sensor device possesses a radiation-sensitive receiver arrangement and an imaging device which images a region to be observed in the region of a zone of interaction (16) onto the receiver arrangement. In order to achieve a compact and space-saving structure it is provided that the imaging device comprises a focusing mirror arranged in the working beam pathway of the laser beam which diverts radiation from the region to be observed out of the working beam pathway and focuses it onto the receiver arrangement.
45 Citations
18 Claims
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1. Sensor device for detecting radiation from the region of a zone of interaction (16) between a laser beam (13) and a workpiece (17) for monitoring a laser machining operation, in particular a laser welding operation, having
a radiation-sensitive receiver arrangement (19), and an imaging device (11,14; -
11, 24;
11, 34) which images a field to be observed from the region of a zone of interaction (16) onto the receiver arrangement (19), whereinthe imaging device (11,14;
11, 24;
11, 34) comprises a focusing optical element (14;
24;
34) arranged in the working beam pathway (12) of the laser beam which diverts radiation from the region to be observed out of the working beam pathway (12) and focuses it onto the receiver arrangement (19). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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11, 24;
Specification