Optical image system with lens and relay on joint optical axis
The lens (A, B) and a relay (C) are on a shared optical axis (51). The lens is positioned so that it produces a first image on which a field screen is positioned, and in which the lens is formed by a large concave primary mirror (A) which has an opening on the axis, and a small secondary mirror (B),...
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| Format: | Patent |
| Sprache: | eng ; ger |
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| Zusammenfassung: | The lens (A, B) and a relay (C) are on a shared optical axis (51). The lens is positioned so that it produces a first image on which a field screen is positioned, and in which the lens is formed by a large concave primary mirror (A) which has an opening on the axis, and a small secondary mirror (B), which are generally positioned in the form of a Cassegrain lens. The relay is formed by a pair of opposite facing mirrors (F, G) each possessing an opening on the axis so as to supply the focal plane (E) to the relay. |
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