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发明名称
绕射光学元件、照明光学装置、曝光装置以及曝光方法
摘要
一种照明光学装置,系使用在照明光瞳面形成实质上均一分布之4极状绕射光学元件,而能在抑制光量损失之同时进行良好的4极照明。系一种用来照明被照射面(13,15)之照明光学装置。为了在照明光瞳面形成具有4极状光强度分布之二次光源,具备用来将入射光束转换为4个光束的绕射光学元件(61)。绕射光学元件中,第1基本绕射光学元件、第2基本绕射光学元件、第1补全光学元件、与第2补全光学元件系同数紧密排列。
申请公布号
TW200405426
申请公布日期
2004.04.01
申请号
TW092120383
申请日期
2003.07.25
申请人
尼康股份有限公司
发明人
后藤明弘;北尚宪
分类号
H01L21/027
主分类号
H01L21/027
代理机构
代理人
林镒珠
主权项
地址
日本
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