DEVICE FOR THE LASER PROCESSING OF MATERIALS

摘要

The present invention can be used in the fields of welding, soldering and cutting as well as in other types of thermal processing using light and laser beams. This invention essentially relates to a device for the laser processing of materials, wherein said device comprises a laser radiation source as well as a preliminary heating source. The preliminary heating source consists of an ellipsoidal reflector having electrodes and a light guide arranged in its radiating focus. The device also includes a focalisation system. One end of the light guide is connected to the laser radiation source, while the other end is connected to the optical focalisation system. The reflector includes an insert having an inlet opening formed therein for letting the laser beam through. The optical focalisation system is arranged in the opening of the annular insert so that the optical axis of the light guide may coincide with the optical axis of the optical focalisation system extending between the electrodes. The insert can also be provided with an ellipsoidal or paraboloidal reflecting surface. The optical focalisation system can also be mounted at the end of the reflector beyond the aperture angle.