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    • 7. 发明申请
    • CATADIOPTRIC PROJECTION OBJECTIVE
    • 目标投影目标
    • US20110235167A1
    • 2011-09-29
    • US13153544
    • 2011-06-06
    • David ShaferWilhelm UlrichAurelian DodocRudolf M. Von BuenauHans-Juergen MannAlexander Epple
    • David ShaferWilhelm UlrichAurelian DodocRudolf M. Von BuenauHans-Juergen MannAlexander Epple
    • G02B17/08
    • G02B17/0804G02B17/08G02B17/0812G02B17/0844G02B17/0856G02B17/0892G03F7/70225
    • A catadioptric projection objective for imaging a pattern provided in an object plane of the projection objective onto an image plane of the projection objective comprises: a first objective part for imaging the pattern provided in the object plane into a first intermediate image; a second objective part for imaging the first intermediate imaging into a second intermediate image; a third objective part for imaging the second intermediate imaging directly onto the image plane; wherein a first concave mirror having a first continuous mirror surface and at least one second concave mirror having a second continuous mirror surface are arranged upstream of the second intermediate image; pupil surfaces are formed between the object plane and the first intermediate image, between the first and the second intermediate image and between the second intermediate image and the image plane; and all concave mirrors are arranged optically remote from a pupil surface. The system has potential for very high numerical apertures at moderate lens material mass consumption.
    • 用于将设置在投影物镜的物平面中的图案成像到投影物镜的像平面上的反射折射投射物镜包括:用于将设置在物平面中的图案成像为第一中间图像的第一物镜部分; 第二目标部分,用于将第一中间成像成像成第二中间图像; 用于将第二中间成像直接成像到图像平面上的第三目标部分; 其中具有第一连续镜面的第一凹面镜和具有第二连续镜面的至少一个第二凹面镜布置在所述第二中间图像的上游; 瞳孔表面形成在物平面与第一中间图像之间,第一和第二中间图像之间以及第二中间图像与图像平面之间; 并且所有凹面反射镜光学地远离光瞳表面布置。 该系统具有中等透镜材料质量消耗的非常高的数值孔径的潜力。
    • 8. 发明授权
    • Unit magnification projection objective
    • 单位放大投影目标
    • US07573655B2
    • 2009-08-11
    • US11870025
    • 2007-10-10
    • David Shafer
    • David Shafer
    • G02B17/00G03B27/52
    • G03F7/70225
    • A catadioptric projection objective has, along an optical axis, a concave mirror; a positive lens group with positive refractive power arranged adjacent to the concave mirror and spaced apart therefrom; a first prism and a second prism each having respective first fiat surfaces and second flat surfaces, wherein the second flat surfaces are arranged adjacent to the positive lens group and on opposite sides of the optical axis, and wherein the first flat surfaces are arranged adjacent to an object plane and an image plane, respectively, of the projection objective. The projection objective has unit magnification and at least one focus at a wavelength in a design wavelength band that includes mercury g-, h- and i-lines. At least the thickest optical element of the positive lens group and the first and second prism are made from optical material having an absorption coefficient k
    • 反射折射投影物镜沿着光轴具有凹面镜; 具有正折射力的正透镜组布置成邻近凹面镜并与之隔开; 第一棱镜和第二棱镜,每个具有相应的第一平面和第二平面,其中所述第二平面布置成与所述正透镜组相邻并且位于所述光轴的相对侧上,并且其中所述第一平面布置成邻近 投影物镜的物平面和像平面。 投影物镜具有单位放大率和在包括汞g-,h-和i-线的设计波长带中的波长处的至少一个焦点。 正透镜组和第一和第二棱镜中至少最厚的光学元件由设计波长带中吸收系数k <0.001cm-1的光学材料制成。
    • 9. 发明申请
    • CATADIOPTRIC PROJECTION OBJECTIVE
    • 目标投影目标
    • US20080310014A1
    • 2008-12-18
    • US12196637
    • 2008-08-22
    • David ShaferWilhelm UlrichAurelian DodocRudolf Von BuenauHans-Juergen MannAlexander Epple
    • David ShaferWilhelm UlrichAurelian DodocRudolf Von BuenauHans-Juergen MannAlexander Epple
    • G02B17/08
    • G02B17/0804G02B17/08G02B17/0812G02B17/0844G02B17/0856G02B17/0892G03F7/70225
    • A catadioptric projection objective for imaging a pattern provided in an object plane of the projection objective onto an image plane of the projection objective comprises: a first objective part for imaging the pattern provided in the object plane into a first intermediate image; a second objective part for imaging the first intermediate imaging into a second intermediate image; a third objective part for imaging the second intermediate imaging directly onto the image plane;wherein a first concave mirror having a first continuous mirror surface and at least one second concave mirror having a second continuous mirror surface are arranged upstream of the second intermediate image; pupil surfaces are formed between the object plane and the first intermediate image, between the first and the second intermediate image and between the second intermediate image and the image plane; and all concave mirrors are arranged optically remote from a pupil surface. The system has potential for very high numerical apertures at moderate lens material mass consumption.
    • 用于将设置在投影物镜的物平面中的图案成像到投影物镜的像平面上的反射折射投射物镜包括:用于将设置在物平面中的图案成像为第一中间图像的第一物镜部分; 第二目标部分,用于将第一中间成像成像成第二中间图像; 用于将第二中间成像直接成像到图像平面上的第三目标部分; 其中具有第一连续镜面的第一凹面镜和具有第二连续镜面的至少一个第二凹面镜布置在所述第二中间图像的上游; 瞳孔表面形成在物平面与第一中间图像之间,第一和第二中间图像之间以及第二中间图像与图像平面之间; 并且所有凹面反射镜光学地远离光瞳表面布置。 该系统具有中等透镜材料质量消耗的非常高的数值孔径的潜力。