Imaging optical system

An imaging optical system for a projection exposure system has at least one anamorphically imaging optical element. This allows a complete illumination of an image field in a first direction with a large object-side numerical aperture in this direction, without the extent of the reticle to be imaged...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: Mann, Hans-Juergen
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An imaging optical system for a projection exposure system has at least one anamorphically imaging optical element. This allows a complete illumination of an image field in a first direction with a large object-side numerical aperture in this direction, without the extent of the reticle to be imaged having to be enlarged and without a reduction in the throughput of the projection exposure system occurring.