Patent ID: 8314362

Claim:
A device for processing a workpiece using a plurality of parallel laser beams comprising: a focusing optical system displaceable in a direction of an axis of symmetry configured to focus each of the plurality of parallel laser beams onto a common focusing plane, and wherein the plurality of laser beams include a first and a second laser beam pair, each containing two laser beams equidistant from the axis of symmetry; and a reflector assembly having at least two reflectors, each having a plurality of reflection surfaces displaceable relative to one another in a direction of the axis of symmetry so as to adjust a relative spacing between the plurality of laser beams on the focusing plane, wherein the plurality of reflection surfaces of the at least two reflectors are configured to deflect the two laser beams of the first laser beam pair so as to form a plurality of first reflections and to deflect the two laser beams of the second laser beam pair so as to form a plurality of second reflections, and wherein a number of the first reflections corresponds to three times the number of the second reflections, wherein each of the plurality of reflection surfaces is disposed at an angle of −45° or +45° with respect to the axis of symmetry.