Patent ID: 8634058
Filing Date: 2014-01-21
Classification: G03F

Abstract:
1. A device manufacturing method comprising: projecting a patterned beam of radiation onto a substrate supported by a substrate table using a projection system; providing an immersion fluid to a space between the projection system and the substrate, the space surrounded by a fluid confinement structure; measuring a parameter of a surface or coating of the substrate, of the substrate table and/or of a further movable table; determining a value of an operating condition of the fluid confinement structure based on the measured parameter; determining a further value of the operating condition of the fluid confinement structure based on a further measurement of a parameter of a surface or coating of the substrate, of the substrate table and/or of a further movable table; and controlling the operation of the fluid confinement structure based on the determined value of the operating condition and, when the fluid confinement structure and/or the space surrounded by the fluid confinement structure is adjacent an edge of the substrate, based on the further determined value of the operating condition but not the determined value of the operating condition.