发明申请
US20020167734A1 Catadioptric projection objective 失效
反射折射投影物镜

Catadioptric projection objective
摘要:
There is provided a catadioptric projection objective that includes (a) an object plane having a rectangular object field, and (b) a beam splitter situated in a light path after the object plane, having a rectangular surface adapted to the object field and having an aspect ratio not equal to 1.
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