LASER DEVICE AND OPERATING METHOD

摘要

The invention relates to a laser device (6) and a corresponding operating method. The laser device (6) is provided with a laser tool (7), comprising a laser lens system (13) with focussing and collimating lenses and, optionally, a divergent lens (35) and a connector (19) for an optical fibre (11) with a fibre decoupling point (12). The focal length (Ff) of the focussing lens (14) is altered by adjusting the optical separation (b) of the fibre decoupling point (12) from the collimating lens (15) by means of an adjuster device (21).