Illumination optical unit for projection lithography
An illumination optical unit for projection lithography serves for illuminating an object field (8), in which an object (12) to be imaged is arrangeable, along an illumination beam path. A first facet mirror (6) has first facets (21) for reflecting guidance of illumination light (3) and for arrangem...
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Format: | Patent |
Sprache: | chi ; eng |
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