Optical imaging device having at least one system diaphragm

An optical imaging device (PL), in particular an objective for semiconductor lithography, is provided with at least one system diaphragm. The system diaphragm comprises a multiplicity of mobile plates, which are rotatably mounted. The plates have a spherical curvature.

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Bibliographische Detailangaben
Hauptverfasser: NGUYEN UY-LIEM, BISCHOFF THOMAS, GELLRICH BERNHARD, BIEG HERMANN, SZEKELY GERHARD, HUBER MARTIN, HENZELIN FRANCOIS, HUMPHRIES MARTIN E
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An optical imaging device (PL), in particular an objective for semiconductor lithography, is provided with at least one system diaphragm. The system diaphragm comprises a multiplicity of mobile plates, which are rotatably mounted. The plates have a spherical curvature.