Device for machining workpiece by means of laser beam and method for operating device

The invention relates to a device (10) for high-frequency deflection of a laser beam (12). The device (10) has an imaging element (32) that expands the beam, which is arranged in front of the displaceable imaging element (34) such that a smaller displacement of the displaceable imaging element (34) has caused a larger displacement of the laser beam focus. A collimator (30) can be arranged in front of the scanner (22) for scanning the laser beam (12) such that the scanner mirrors (24, 26) can be designed to be small and light and have high dynamics. 本发明涉及一种用于高频地偏转激光束(12)的设备(10)。设备(10)具有对射束进行扩展的成像元件(32)，该对射束进行扩展的成像元件布置在可移位的成像元件(34)的前方，使得可移位的成像元件(34)的较小位移已经引起激光束焦点的较大位移。在用于扫描激光束(12)的扫描器(22)的前方能够布置有准直器(30)，使得扫描器镜(24，26)可以设计得小而轻并且具有高动态性。