Patent ID: 6331692
Filing Date: 2001-12-18
Classification: B23K

Abstract:
A device for treating a workpiece with a laser beam on a surface of said workpiece along a machining contour, said device comprising:a laser head having:a diode laser arrangement with a plurality of emitters formed on at least one chip, each emitter having an active laser light emitting layer for generating an emitter-laser-beam, said layer extending in a second axial direction (slow-axis), and perpendicular to a first axial direction (fast-axis), andslow axis and fast axis collimators for said emitters consisting of microcylinder lenses forming said laser beam from said emitter-laser-beams of said plurality of emitters, said laser beam having a longitudinal cross section with a major extension in said second axial direction (slow axis),laser optics focusing said laser beam on the surface in a focus having a longitudinal extension; andmeans for turning said laser head around a center of said focus point such that the longitudinal extension of said focus point forms a tangent to said machining contour.