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US08009343B2 Optical imaging device having at least one system diaphragm 有权
具有至少一个系统隔膜的光学成像装置

Optical imaging device having at least one system diaphragm
Abstract:
An optical imaging device (PL), in particular an objective for semiconductor lithography, is provided with at least one system diaphragm. The system diaphragm comprises a multiplicity of mobile plates, which are rotatably mounted. The plates have a spherical curvature.
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