ILLUMINATION SYSTEM OF A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS WITH A BIREFRINGENT ELEMENT

The disclosure concerns an illumination system of a microlithographic projection exposure apparatus. The illumination system includes a mirror arrangement which has a plurality of mirror units and at least one element arranged in front of the mirror arrangement in the light propagation direction to...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FIOLKA DAMIAN, SAENGER INGO, WALLDORF DANIEL
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The disclosure concerns an illumination system of a microlithographic projection exposure apparatus. The illumination system includes a mirror arrangement which has a plurality of mirror units and at least one element arranged in front of the mirror arrangement in the light propagation direction to produce at least two different states of polarization incident on different mirror units. The mirror units are displaceable independently of each other for altering an angle distribution of the light reflected by the mirror arrangement.