OPTICAL ELEMENT AND EXPOSURE DEVICE

Optical Element And Exposure DeviceTAn optical element is used for an exposure apparatus which is configured to illuminate a mask with an exposure light beam for traasferring a pattern on the mask onto a substrate through a projection optical system and to iaterpose a given liquid in a space between...

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1. Verfasser: KOKUBUN, TAKAO
Format: Patent
Sprache:eng
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Zusammenfassung:Optical Element And Exposure DeviceTAn optical element is used for an exposure apparatus which is configured to illuminate a mask with an exposure light beam for traasferring a pattern on the mask onto a substrate through a projection optical system and to iaterpose a given liquid in a space between a surface of the substrate and the projection optical system. The optical element includes a first anti-dissolution member provided on a surface of a transmissive optical element10 on the substrate's side of the projection optical system.Figure 1