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    • 8. 发明申请
    • Illumination System for a Microlithography Projection Exposure Installation
    • 用于微光刻投影曝光安装的照明系统
    • US20070263199A1
    • 2007-11-15
    • US10590700
    • 2005-02-24
    • Damian FiolkaMarkus Zenzinger
    • Damian FiolkaMarkus Zenzinger
    • G03B27/72G02B5/30
    • G03F7/70566
    • An illumination system for a microlithography projection exposure installation for illuminating an illumination field (7) with the light of an assigned light source (10) has at least one polarization compensator (11) in a pupil plane (23) of the illumination system. The latter can be used for the at least partial compensation of a polarization change introduced by elements (5) that change polarization as a function of angle. For the purpose of location-dependent polarization change, the polarization compensator (11) has polarization changing means that can be designed as birefringent elements or elements having a birefringent structure. The transmission properties of the microlithography projection exposure installation can be enhanced by such a polarization compensation, particularly when use is made of a subsequent projection objective with a physical beam splitter.
    • 用于用指定的光源(10)的光照射照明场(7)的微光刻投影曝光装置的照明系统在照明系统的光瞳平面(23)中具有至少一个偏振补偿器(11)。 后者可用于至少部分补偿通过改变作为角度的函数的偏振的元件(5)引入的偏振变化。 为了位置偏振改变的目的,偏振补偿器(11)具有可被设计为具有双折射结构的双折射元件或元件的偏振改变装置。 通过这种极化补偿可以增强微光刻投影曝光装置的透射特性,特别是当使用具有物理分束器的后续投影物镜时。