Using laser remote welding, a laser welds from afar. The laser is focussed on the joint of the materials which are to be welded and proceeded with constant celerity. At the focus very high power densities are archieved, which heat the handled material to the melting point. The liquid metal proceeds and welds.

No handling techniques are necessary and the components are not stressed by exterior vigours throughout the welding process. The optical system renders possible to focus the laser beam in a remote working plane. The operating distance is given by the beam quality of the laser and by the necessary process energy. The beam guide of a LRW system is displayed below schematically.

The Laser is beamed through a telecentric lens and focussed on a spot afar. This lens is moveable in position which regulates the operating distance. After the lens the beam hits a deflectable mirror, which reflects the beam. The mirror has two gyratory degrees of freedom at its disposal and steers the laser over the working plane. A big advantage of the system is the movement of relatively small masses. Only the mirror has to be moved to achieve a beam movement. That guarantees a high dynamic which in turn reduces non-productive process times.