Figure 9
Four motion stage-stacks for 2D focusing with two saw-tooth lens pairs in the E station. The beam propagates from right to left, encountering (in order) the inverted, upright, out-facing and in-facing lenses, positioned at distances 1.7 m, 1.5 m, 1.3 m and 1.1 m, respectively, from the focal spot location at 70 m from the source. |