System for achieving multi-line scanning

The invention discloses a system for achieving multi-line scanning. The system comprises a collimated light generating device and a polyhedral reflecting mirror; the collimated light generating deviceis used for providing collimated light; the polyhedral reflecting mirror can rotate around the central axis, comprises a plurality of reflecting surfaces and is used for reflecting the collimated light, wherein the reflecting surfaces of the polyhedral reflecting mirror have different included angles relative to the central axis, so that reflected light forms a plurality of parallel scanning lines on a scanned object. The system is simple in structure, under the condition of not changing an equipment structure, multi-line scanning can be achieved through the angle deflection of the reflectingmirror surfaces of the polyhedral reflecting mirror, and the spatial resolution is increased. 本发明公开了种用于实现多线扫描的系统，准直光线产生装置，用于提供准直光线；以及多面体反射镜，所述多面体反射镜能够围绕中心轴线旋转，并且，所述多面体反射镜包括多个反射面，用于反射所述准直光线，其中，所述多面体反射镜的所述多个反射面相对于中心轴线的夹角不同，使得反射