EP3421170A1 - DEVICE FOR GENERATING A LASER BEAM PROFILE ROTATING AROUND A ROTATION AXIS, METHOD OF ROTATING A LASER BEAM PROFILE AROUND A ROTATION AXIS, METHOD OF DRILLING AND/OR FOR REMOVING MATERIAL AND/OR FOR PRECISION CUTTING BY MEANS OF LASER BEAMS, AND METHOD FOR MOUNTING A PORRO PRISM IN A ROTARY UNIT | Patent Bear