公开(公告)号：US20180299796A1

公开(公告)日：2018-10-18

申请号：US15570934

申请日：2016-03-29

Applicant: ASML Netherlands B.V.

Inventor： Günes NAKIBOGLU ,  Maarten HOLTRUST ,  Martinus VAN DUIJNHOVEN ,  Francis FAHRNI ,  Frank Johannes Jacobus VAN BOXTEL ,  Anne Willemijn Bertine QUIST ,  Bart Dinand PAARHUIS ,  Daan Daniel Johannes VAN SOMMEREN

IPC: G03F7/20

Abstract: A lithographic apparatus has: a conduit through which a gas can flow; a gas mover configured to cause the gas to flow in the conduit; a wall in contact with the gas in the conduit and defining a membrane aperture therein; and an acoustic filter including a flexible membrane fixed in the membrane aperture. The acoustic filter reduces transmission of acoustic disturbances without adding any flow resistance.