LASER-BEAM WELDING DEVICE COMPRISING AN OPTICAL MEANS FOR CONVERTING THE LASER BEAM INTO AN ANNULAR LASER BEAM AND A CORRESPONDING LASER-BEAM WELDING METHOD

摘要

The invention relates to a laser-beam welding device (1) and a laser-beam welding method. According to the invention, it is provided that a laser beam (3') converted by the use of an optical means (9, 15) so as to have an annular cross-sectional area is deflected to produce a radial weld (17).