发明公开
EP1390813A2 PROJEKTIONSBELICHTUNGSANLAGE DER MIKROLITHOGRAPHIE 审中-公开
微光刻投影曝光系统

PROJEKTIONSBELICHTUNGSANLAGE DER MIKROLITHOGRAPHIE
摘要:
The injection relates to a projection illumination system, especially one with 157 or 193 nm and an image-side NA of 0.8 0.95, comprising fluoride crystal lenses (43, 43), wherein the negative effect of the angle-dependent birefringence thereof is reduced by relative rotation around the optical axis (O) and/or by a correction element (44) close to a plane of the pupil (P).
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