Method and apparatus for the thermal treatment of a workpiece by means of a laser beam
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United States of America Patent
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Feb 10, 2015
Grant Date -
Feb 2, 2012
app pub date -
Jul 28, 2011
filing date -
Jul 30, 2010
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Abstract
In the thermal cutting of a workpiece by means of a laser beam, said beam is generated by means of a laser source and supplied to a movable laser head. In the laser head, an optical deflection element is provided for deflecting the laser beam such that, when viewed in working direction, it encloses a tilt angle (α) differing from 0 degrees with the longitudinal axis of the laser head. Starting therefrom, to produce the inclination of the collimated laser beam to the vertical with a very small number of optical components if possible, the invention suggests that the laser beam is supplied to the laser head by means of an optical fiber and the laser beam is collimated, passes through the deflection element laterally offset to the longitudinal axis of the laser head and is deflected by means of said element onto the workpiece surface and focused at the same time.
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