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    • 8. 发明申请
    • A DOUBLE-FACETTED ILLUMINATION SYSTEM WITH ATTENUATOR ELEMENTS ON THE PUPIL FACET MIRROR
    • 带有衰减器元件的双面照明系统在PUPIL FACET MIRROR
    • WO2006136353A1
    • 2006-12-28
    • PCT/EP2006/005857
    • 2006-06-19
    • CARL ZEISS SMT AGSINGER, WolfgangHAINZ, JoachimSCHUBERT, Erich
    • SINGER, WolfgangHAINZ, JoachimSCHUBERT, Erich
    • G03F7/20
    • G03F7/70075G03F7/70083G03F7/70191
    • The invention relates to an illumination system with a light source (101) emitting radiation with a wavelength ≤ 193 nm, especially radiation in the EUV wavelength range. The invention comprises a first facetted optical element (102) in a first plane (150) with at least a first and second field raster element (309) which receive the light of the light source (101 ) and divide the same into a first and second bundle (21) of light; a optical component comprising at least a second facetted optical element (104) in a second plane (152) with a first and second pupil raster element (415), with the first light bundle impinging upon the first pupil raster element and the second light bundle impinging upon the second pupil raster element, with an attenuator (1100) being arranged in or close to the second plane (152) or a plane conjugated to the second plane at least in the first light bundle extending from the first field raster element to the first pupil raster element, wherein the optical component images the first and second field raster element into a field plane.
    • 本发明涉及具有发射波长为193nm的辐射的光源(101)的照明系统,特别是EUV波长范围内的辐射。 本发明包括在第一平面(150)中的至少第一和第二场光栅元件(309)的第一刻面光学元件(102),其接收光源(101)的光并将其分成第一和第 第二束(21)光; 在第二平面(152)中至少包括具有第一和第二光瞳光栅元件(415)的第二刻面光学元件(104)的光学部件,其中第一光束撞击第一光瞳光栅元件和第二光束 撞击在第二光瞳光栅元件上,其中衰减器(1100)布置在第二平面(152)中或靠近第二平面(152)或至少在从第一场光栅元件延伸到第二光栅元件的第一光束中与第二平面共轭的平面 第一光瞳光栅元件,其中所述光学部件将所述第一和第二场光栅元素成像为场平面。