A laser cutting head having a controllable collimator having a movable lens for controlling beam diameter and / or focus position

摘要

The laser cutting head includes a controllable collimator having a movable collimator lens that controls beam diameter and / or focal position. The laser cutting head may be used in a laser cutting system having a control system for controlling the position of the movable collimator lens. The lens can be moved, for example, to cut a different type of material or material thickness to adjust the beam spot size. The lens can also be moved after changing the distance of the laser cutting head relative to the workpiece to re-adjust the focus to the workpiece.