Optical element, exposure apparatus based on the use of the same, exposure method, and method for producing microdevice

An optical element includes a base material, a liquid-repellent member provided on at least a part of a surface of the base material, and a light-reducing member provided between the base material and the liquid-repellent member to protect the liquid-repellent member from radiation of light by reduc...

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Bibliographische Detailangaben
Hauptverfasser: Hoshika, Ryuichi, Kokubun, Takao
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:An optical element includes a base material, a liquid-repellent member provided on at least a part of a surface of the base material, and a light-reducing member provided between the base material and the liquid-repellent member to protect the liquid-repellent member from radiation of light by reducing the light. The optical element is usable for a liquid immersion exposure apparatus for exposing a substrate through a liquid. It is possible to avoid any inflow of the liquid in a liquid immersion area into an unexpected place via the optical element.