发明授权
US07379170B2 Apparatus and method for characterizing an image system in lithography projection tool 有权
用于表征光刻投影工具中的图像系统的装置和方法

Apparatus and method for characterizing an image system in lithography projection tool
摘要:
A system and method for characterizing an imaging system causes a diffraction image indicative of a test structure having a generalized line-grating to be formed and then extracts from a measurement of the diffraction image a lens transmittance function, a photoresist property or a defocus distance.
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