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    • 2. 发明申请
    • ILLUMINATION OPTICAL UNIT FOR PROJECTION LITHOGRAPHY
    • 投影光刻照明光学单元
    • WO2013007731A1
    • 2013-01-17
    • PCT/EP2012/063520
    • 2012-07-11
    • CARL ZEISS SMT GMBHHENNERKES, ChristophSÄNGER, IngoZIMMERMANN, JörgRUOFF, JohannesMEIER, MartinSCHLESENER, Frank
    • HENNERKES, ChristophSÄNGER, IngoZIMMERMANN, JörgRUOFF, JohannesMEIER, MartinSCHLESENER, Frank
    • G03F7/20
    • G03F7/70191G02B7/1815G02B17/06G02B26/0816G03F7/70108G03F7/70116G03F7/70891
    • An illumination optical unit for projection lithography has a first polarization mirror device (16) for the reflection and polarization of illumination light (3). A second mirror device (22), which is disposed downstream of the polarization mirror device (16), serves for the reflection of an illumination light beam (25). At least one drive device (21; 27) is operatively connected to at least one of the two mirror devices (16; 22). The two mirror devices (16; 22) are displaceable relative to one another with the aid of the drive device (21; 27) between a first relative position, which leads to a first beam geometry of the illumination light beam (25) after reflection at the second mirror device (22), and a second relative position, which leads to a second beam geometry of the illumination light beam (25) after reflection at the second mirror device (22), which is different from the first beam geometry. This results in a flexible predefinition of different illumination geometries, in particular of different illumination geometries with rotationally symmetrical illumination.
    • 用于投影光刻的照明光学单元具有用于照明光(3)的反射和偏振的第一偏振镜装置(16)。 设置在偏振镜装置(16)下游的第二镜装置(22)用于照明光束(25)的反射。 至少一个驱动装置(21; 27)可操作地连接到两个反射镜装置(16; 22)中的至少一个。 借助于驱动装置(21; 27),两个反射镜装置(16; 22)可相对于彼此移动,该第一相对位置在第一相对位置之间,该第一相对位置在反射之后导致照明光束(25)的第一光束几何形状 在第二反射镜装置(22)和第二相对位置,其在第二反射镜装置(22)反射之后导致照明光束(25)的第二光束几何形状,其与第一光束几何形状不同。 这导致不同照明几何形状的灵活预定义,特别是具有旋转对称照明的不同照明几何形状。