Laser processing system capable of dithering

Laser processing system capable of dithering

  • CN 105,579,185 B
  • Filed: 09/24/2014
  • Issued: 11/17/2020
  • Est. Priority Date: 09/24/2013
  • Status: Active Grant
First Claim
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1. A method for laser machining a workpiece, the method comprising the steps of:

  • generating a collimated laser beam having a uniform Z-axis power density along at least a portion of a length of the collimated laser beam using a collimating lens in the beam delivery system;

    directing a collimated laser beam toward a workpiece to form a beam spot on the workpiece;

    moving the workpiece such that the beam spot facilitates machining on a three-dimensional surface of the workpiece as the workpiece moves; and

    dithering the collimated laser beam by moving the collimating lens along the X-axis and the Y-axis without deflecting and moving the laser output coupled to the beam delivery system such that the collimated laser beam traverses a distance of ±

    10mm or less along one of the X-axis and the Y-axis while the collimated laser beam remains perpendicular to the workpiece such that the beam spot correspondingly dithers on the workpiece as the workpiece moves, thereby maintaining consistent laser beam characteristics at different processing locations on the three-dimensional surface of the workpiece.

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