ILLUMINATION SYSTEM OF A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS
    3.
    发明授权
    ILLUMINATION SYSTEM OF A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS 有权
    照明系统的微光刻投影曝光装置

    公开(公告)号:EP2126636B1

    公开(公告)日:2012-06-13

    申请号:EP08715667.5

    申请日:2008-01-30

    IPC分类号: G03F7/20

    CPC分类号: G03F7/70191

    摘要: An illumination system of a microlithographic projection exposure apparatus comprises at least one transmission filter (66; 166; 266; 366; 466; 566; 666; 666'; 766, 766'; 866, 866') which has a different transmittance at least at two positions and which is arranged between a pupil plane (42, 60) and a field plane (52, 58). The transmittance distribution is determined such that it has field dependent correcting effects on the ellipticity. In some embodiments the telecentricity and/or the irradiance uniformity is not affected by this correction.

    ILLUMINATION SYSTEM OF A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS
    4.
    发明公开
    ILLUMINATION SYSTEM OF A MICROLITHOGRAPHIC PROJECTION EXPOSURE APPARATUS 有权
    照明系统的微光刻投影曝光装置

    公开(公告)号:EP2126636A2

    公开(公告)日:2009-12-02

    申请号:EP08715667.5

    申请日:2008-01-30

    申请人: Carl Zeiss SMT AG

    IPC分类号: G03F7/20

    CPC分类号: G03F7/70191

    摘要: An illumination system of a microlithographic projection exposure apparatus comprises at least one transmission filter (66; 166; 266; 366; 466; 566; 666; 666'; 766, 766'; 866, 866') which has a different transmittance at least at two positions and which is arranged between a pupil plane (42, 60) and a field plane (52, 58). The transmittance distribution is determined such that it has field dependent correcting effects on the ellipticity. In some embodiments the telecentricity and/or the irradiance uniformity is not affected by this correction.

    SYSTEM ZUR REDUZIERUNG DER KOHÄRENZ EINER LASERSTRAHLUNG
    5.
    发明公开
    SYSTEM ZUR REDUZIERUNG DER KOHÄRENZ EINER LASERSTRAHLUNG 审中-公开
    系统来降低激光辐射的一致性

    公开(公告)号:EP1721217A2

    公开(公告)日:2006-11-15

    申请号:EP05707555.8

    申请日:2005-02-22

    申请人: Carl Zeiss SMT AG

    IPC分类号: G03F7/20

    CPC分类号: G03F7/70583 G03F7/70058

    摘要: The invention relates to a system for reducing the coherence of a wave front-emitting laser radiation (10), especially for a projection lens for use in semiconductor lithography, wherein a first partial beam (10a) of a laser beam (10) incident on a surface (11) of a resonator body (9) is partially reflected. A second partial beam (10b) penetrates the resonator body (9) and emerges from the resonator body (9) at least approximately in the area of entry after a plurality of total internal reflections. The two partial beams (10a and 10b) are then passed on jointly to an illumination plane. The resonator body (9) is adapted, in addition to splitting the laser beam into partial beams (10a, 10b), to modulate the wave fronts of at least one partial beam (10b) during a laser pulse. The partial beams (10a, 10b) reflected on the resonator body (9) and penetrating the resonator body are superimposed downstream of the resonator body (9). The resonator body (9, 9') is provided with a phase plate (12) having different local phase distribution.