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    • 5. 发明申请
    • OPTICAL BEAM DEFLECTING ELEMENT AND METHOD OF ADJUSTMENT
    • 光束偏移元件和调整方法
    • WO2011012148A1
    • 2011-02-03
    • PCT/EP2009/005555
    • 2009-07-31
    • CARL ZEISS SMT GMBHRUNDE, DanielDOLL, FlorianVÖLKEL, ReinhardWEIBLE, Kenneth, J.WEISS, GundulaGERHARD, Michael
    • RUNDE, DanielDOLL, FlorianVÖLKEL, ReinhardWEIBLE, Kenneth, J.WEISS, GundulaGERHARD, Michael
    • G03F7/20
    • G03F7/70191G03F7/70108G03F7/70158
    • An optical beam deflecting element (BDE) for generating a radiation beam having rays according to a predefined angular distribution by changing an angular distribution of rays in a radiation beam incident on the beam deflecting arrangement comprises first deflecting structures arranged in a first deflecting region (DR1) generating a first bundle of first rays, each of the first rays having a propagation direction corresponding to a ray angle within a predefined distribution of ray angles, the first rays having first intensities according to a first intensity distribution; and second deflecting structures arranged in a second deflecting region (DR2), laterally offset relative to the first deflecting region, generating a second bundle of second rays, each second ray having a propagation direction corresponding to a ray angle within the predefined distribution of ray angles, the second rays having second intensities according to a second intensity distribution, which differs from the first intensity distribution. The beam deflecting element may be used effectively as an energy distribution manipulator in an illumination system to vary the energy distribution within a given spatial intensity distribution in a pupil plane (PILL) of the illumination system substantially without changing the shape and size and position of illuminated areas in the pupil plane.
    • 一种光束偏转元件(BDE),用于通过改变入射在光束偏转装置上的辐射束中的光线的角度分布来产生具有根据预定角度分布的射线的辐射束,包括布置在第一偏转区域(DR1)中的第一偏转结构 )产生第一束第一射线,所述第一射线中的每一个具有对应于预定射线角度分布内的射线角度的传播方向,所述第一射线具有根据第一强度分布的第一强度; 和布置在第二偏转区域(DR2)中的第二偏转结构,相对于第一偏转区域横向偏移,产生第二束第二射线,每个第二射线具有对应于预定分布的射线角度内的射线角度的传播方向 所述第二光线具有与第一强度分布不同的第二强度分布的第二强度。 光束偏转元件可以有效地用作照明系统中的能量分配操纵器,以在照明系统的光瞳平面(PILL)内的给定空间强度分布内改变能量分布,基本上不改变照明的形状,尺寸和位置 瞳孔中的区域。