Contamination barrier and lithographic apparatus
First Claim
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1. A rotatable contamination barrier for use with an extreme ultraviolet radiation system, the barrier comprising:
- a blade structure configured to trap contaminant material coming from a radiation source; and
an eccentric mass element displaced relative to a central axis of rotation to balance the blade structure when the blade structure is rotated about the central axis.
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Abstract
A rotatable contamination barrier for use with an extreme ultraviolet radiation system includes a blade structure configured to trap contaminant material coming from a radiation source, and an eccentric mass element displaced relative to a central axis of rotation to balance the blade structure when the blade structure is rotated about the central axis.
19 Citations
25 Claims
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1. A rotatable contamination barrier for use with an extreme ultraviolet radiation system, the barrier comprising:
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a blade structure configured to trap contaminant material coming from a radiation source; and an eccentric mass element displaced relative to a central axis of rotation to balance the blade structure when the blade structure is rotated about the central axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A lithographic apparatus, comprising:
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a rotatable contamination barrier configured to receive radiation from a radiation source, the contamination barrier comprising a blade structure configured to trap contaminant material coming from the radiation source, and an eccentric mass element displaced relative to a central axis of rotation to balance the blade structure when the blade structure is rotated about the central axis; an illumination system configured to condition the beam of radiation; a support constructed to support a patterning device, the patterning device being capable of imparting the radiation with a pattern in its cross-section to form a patterned radiation beam; a substrate table constructed to hold a substrate; and a projection system configured to project the patterned radiation beam onto a target portion of the substrate. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification