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US06741329B2 Lithographic apparatus and device manufacturing method 有权
平版印刷设备和器件制造方法

Lithographic apparatus and device manufacturing method
摘要:
An illumination intensity adjustment device includes a plurality of blades disposed in the projection beam so as to cast half-shadows extending across the illumination field. The blades can be selectively rotated to increase their width perpendicular to the projection beam to control uniformity.
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