APPARATUS FOR USE IN A METROLOGY PROCESS OR LITHOGRAPHIC PROCESS

An apparatus for use in a metrology process or a lithographic process, the apparatus including: an object support module adapted to hold an object; and a first gas shower arranged on a first side of the object support module and adapted to emit a gas with a first velocity in a first gas direction wh...

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Hauptverfasser: VAN GEND, Johan, GOSEN, Jeroen Gerard, KOOIKER, Allard Eelco, RONDE, Michaél Johannes Christiaan, VAN DE GROES, Henricus Martinus Johannes, ARORA, Sampann, KUINDERSMA, Lucas, DE VOS, Youssef Karel Maria, KEULEN, Luuc, VAN BANNING, Dennis Herman Caspar, PRIL, Wouter Onno
Format: Patent
Sprache:eng
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Zusammenfassung:An apparatus for use in a metrology process or a lithographic process, the apparatus including: an object support module adapted to hold an object; and a first gas shower arranged on a first side of the object support module and adapted to emit a gas with a first velocity in a first gas direction which is a horizontal direction to cause a net gas flow in the apparatus to be a substantially horizontal gas flow in the first gas direction at least above the object support module.