| 摘要 |
<p>Pancratic mirror lens for laser focusing, in particular for laser machining systems, having a preferably convex paraboloid mirror (P) and an ellipsoid mirror (E), which can also be approximated by toroidal or spherical shapes. <??>The focus (F1) of the paraboloid mirror (P) and the first focus (F1) of the ellipsoid mirror (E) coincide. By rotating the ellipsoid mirror (E) about the axis, parallel to the incident laser beam, through the first focus (F1), the effective image-side aperture (eg from k = 4 to k = 8) or the focal length are varied. <??>In a laser machining system, the migration thereby caused in the focus (F2) is compensated by the track control. <IMAGE> </p> |
