Lithographic apparatus, device manufacturing method and positioning system
A lithographic apparatus includes a positioning system including a first and second electromagnetic actuator. Each actuator includes two mutually co-operating electromagnetical elements which are movable with respect to one another due to force acting on the elements of the respective actuator. At l...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A lithographic apparatus includes a positioning system including a first and second electromagnetic actuator. Each actuator includes two mutually co-operating electromagnetical elements which are movable with respect to one another due to force acting on the elements of the respective actuator. At least one of the actuators includes a shield configured to shield the actuator from a field generated by the other actuator. In this manner, a disturbance force due to the field is prevented to act on the shielded actuator. The invention also includes a positioning system including such actuators. |
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