Illumination system
    4.
    发明公开
    Illumination system 审中-公开
    照明系统

    公开(公告)号:EP1793278A3

    公开(公告)日:2007-12-05

    申请号:EP06255958.8

    申请日:2006-11-22

    IPC分类号: G03F7/20

    摘要: Illumination system comprising a plate integrator (100) for forming a plurality of secondary light sources (104,104a,104b) and a coherence remover (102) having a plurality of transparent rods (102a-c) with different optical path lengths. A first lens (101 ) between integrator and coherence remover focuses each of the plurality of secondary sources on a respective one of the plurality of rods of the coherence remover. A second lens (103) located after the coherence remover recombines the plurality of incoherent beams in the mask plane (106).

    摘要翻译: 照明系统包括用于形成多个二次光源(104,104a,104b)的板式积分器(100)和具有多个具有不同光路长度的透明杆(102a-c)的相干移除器(102)。 积分器和相干移除器之间的第一透镜(101)将多个二次源中的每一个聚焦在相干移除器的多个杆中的相应杆上。 位于相干移除器之后的第二透镜(103)将多个非相干光束重新组合在掩模平面(106)中。