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Figure 1
Wolter type 1 system for imaging a source at finite distance. Rays from F1 are focused by a hyperbola making a virtual source at F2 for imaging by an ellipse to the real image F3. The magnification is (A–F3/A–F2) × (B–F2/B–F1). |
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Figure 1
Wolter type 1 system for imaging a source at finite distance. Rays from F1 are focused by a hyperbola making a virtual source at F2 for imaging by an ellipse to the real image F3. The magnification is (A–F3/A–F2) × (B–F2/B–F1). |