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发明名称
投影光学系统、曝光设备及装置制造方法
摘要
此发明为一种投影光学系统,包括复数个透镜群组,且将第一物体的影像投影至第二物体上。该复数个透镜群组之位于最接近第二物体的底部透镜群组系由具有1.6或更大之折射率的等向性结晶材料所制成,且具有正焦距。底部透镜群组之位于第一物体侧的表面之曲率半径R(mm)及底部透镜群组的中心厚度d(mm)满足3.0>R/d>1.6及d<60。
申请公布号
TW200925792
申请公布日期
2009.06.16
申请号
TW097133921
申请日期
2008.09.04
申请人
佳能股份有限公司
发明人
大阪昇
分类号
G03F7/20(2006.01);G02B27/18(2006.01)
主分类号
G03F7/20(2006.01)
代理机构
代理人
林志刚
主权项
地址
日本
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