Photocopying – Projection printing and copying cameras – Illumination systems or details
Reexamination Certificate
2008-07-15
2008-07-15
Mathews, Alan A (Department: 2851)
Photocopying
Projection printing and copying cameras
Illumination systems or details
C355S053000, C355S071000
Reexamination Certificate
active
07400381
ABSTRACT:
A lithographic apparatus comprises an illumination system for providing a projection beam of radiation. A support structure is provided for supporting a patterning device, the patterning device serving to impart the projection beam with a pattern in its cross-section. A substrate table holds a substrate, while a projection system projects the patterned beam onto a target portion of the substrate. The illumination system comprises a field defining element arranged to define an illuminating field in the plane of the patterning device or in a plane conjugate thereto, the field being off-axis with respect to the optical axis of the illuminating system.
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patent: 2002/0085276 (2002-07-01), Tanitsu et al.
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patent: 2004/0130806 (2004-07-01), Takahashi
patent: 1 372 034 (2003-12-01), None
patent: WO 02/35273 (2002-05-01), None
ASML Netherlands B.V.
Mathews Alan A
Pillsbury Winthrop Shaw & Pittman LLP
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