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    • 10. 发明授权
    • Partial objective in an illuminating systems
    • 照明系统的部分目标
    • US06680803B2
    • 2004-01-20
    • US09969441
    • 2001-10-01
    • Jörg SchultzAlexander SohmerAlexander EppleJohannes WanglerChrista Müller
    • Jörg SchultzAlexander SohmerAlexander EppleJohannes WanglerChrista Müller
    • G02B300
    • G03F7/70891G02B13/143G03F7/7005G03F7/70066G03F7/70075G03F7/70216
    • Partial objective for illumination of an image field in an illuminating device of a microlithographic projection exposure apparatus, arranged between a aperture plane and an image plane. The partial objective comprises a first lens group and a second lens group with a lens with a first aspheric lens surface. The second lens group has at least a first lens with negative refractive power and at least a second lens with positive refractive power. The maximum field height Yimmax within the image field is at least 40 mm; the image-side numerical aperture is at least 0.15. The distribution of the chief ray angles PF over the field heights Yim within the image field is given by a pupil function PF(Yim), which consists of a linear contribution c1·Yim and a non-linear contribution PFNL(Yim), the non-linear contribution PFNL(Yim) being at least +15 mrad for the maximum positive field height Yimmax.
    • 布置在孔平面和图像平面之间的微光刻投影曝光装置的照明装置中的照明场的部分目的。 部分目标包括具有第一非球面透镜表面的透镜的第一透镜组和第二透镜组。 第二透镜组具有至少具有负屈光力的第一透镜和至少具有正屈光力的第二透镜。 图像场内的最大场高Yim 至少为40 mm; 图像侧数值孔径至少为0.15。 在场域内的场高度Yim上的主射线角度PF的分布由瞳孔函数PF(Yim)给出,该光瞳函数PF(Yim)由线性贡献c1.Yim和非线性贡献PFNL(Yim)组成, 线性贡献PFNL(Yim)对于最大正场高度Yim 至少为+15mrad。