Lithographic apparatus and device manufacturing method

A lithographic projection apparatus in which the projection system comprises a plurality of optical elements or sensors mounted on a frame. The frame is made of a glass ceramic material with a coefficient of thermal expansion of less than or approximately equal to 0.1 x 10 K thereby avoiding the nee...

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Hauptverfasser: MUHLBEYER, MICHAEL, FRANKEN, DOMINICUS JACOBUS PETRUS ADRIANUS, LOOPSTRA, ERIK ROELOF, MAUL, GUENTER, MEHLKOPP, KLAUS, HOF, ALBRECHT, VAN DIJSSELDONK, ANTONIUS JOHANNES JOSEPHUS, SMITS, JOSEPHUS JACOBUS, MOORS, JOHANNES HUBERTUS JOSEPHINA
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A lithographic projection apparatus in which the projection system comprises a plurality of optical elements or sensors mounted on a frame. The frame is made of a glass ceramic material with a coefficient of thermal expansion of less than or approximately equal to 0.1 x 10 K thereby avoiding the need for expensive cooling systems and/or predictive temperature compensation.