Projection objective of a microlithographic projection exposure apparatus
    3.
    发明授权
    Projection objective of a microlithographic projection exposure apparatus 有权
    微光刻投影曝光装置的投影目标

    公开(公告)号:US08325426B2

    公开(公告)日:2012-12-04

    申请号:US13156819

    申请日:2011-06-09

    IPC分类号: G02B15/14

    摘要: A projection objective of a microlithographic projection exposure apparatus has a high index refractive optical element with an index of refraction greater than 1.6. This element has a volume and a material related optical property which varies over the volume. Variations of this optical property cause an aberration of the objective. In one embodiment at least 4 optical surfaces are provided that are arranged in at least one volume which is optically conjugate with the volume of the refractive optical element. Each optical surface comprises at least one correction means, for example a surface deformation or a birefringent layer with locally varying properties, which at least partially corrects the aberration caused by the variation of the optical property.

    摘要翻译: 微光刻投影曝光装置的投影物镜具有折射率大于1.6的高折射率折射光学元件。 该元件具有在体积上变化的体积和材料相关的光学性质。 该光学特性的变化导致物镜的像差。 在一个实施例中,提供至少4个光学表面,其布置在与折射光学元件的体积光学共轭的至少一个体积中。 每个光学表面包括至少一个校正装置,例如具有局部变化特性的表面变形或双折射层,其至少部分地校正由光学性质的变化引起的像差。

    Projection objective of a microlithographic projection exposure apparatus
    5.
    发明授权
    Projection objective of a microlithographic projection exposure apparatus 有权
    微光刻投影曝光装置的投影目标

    公开(公告)号:US07982969B2

    公开(公告)日:2011-07-19

    申请号:US12330980

    申请日:2008-12-09

    IPC分类号: G02B15/14

    摘要: A projection objective of a microlithographic projection exposure apparatus has a high index refractive optical element with an index of refraction greater than 1.6. This element has a volume and a material related optical property which varies over the volume. Variations of this optical property cause an aberration of the objective. In one embodiment at least 4 optical surfaces are provided that are arranged in at least one volume which is optically conjugate with the volume of the refractive optical element. Each optical surface comprises at least one correction means, for example a surface deformation or a birefringent layer with locally varying properties, which at least partially corrects the aberration caused by the variation of the optical property.

    摘要翻译: 微光刻投影曝光装置的投影物镜具有折射率大于1.6的高折射率折射光学元件。 该元件具有在体积上变化的体积和材料相关的光学性质。 该光学特性的变化导致物镜的像差。 在一个实施例中,提供至少4个光学表面,其布置在与折射光学元件的体积光学共轭的至少一个体积中。 每个光学表面包括至少一个校正装置,例如具有局部变化特性的表面变形或双折射层,其至少部分地校正由光学性质的变化引起的像差。

    Projection exposure system
    10.
    发明授权
    Projection exposure system 有权
    投影曝光系统

    公开(公告)号:US06806942B2

    公开(公告)日:2004-10-19

    申请号:US10434952

    申请日:2003-05-08

    IPC分类号: G03B2754

    摘要: A projection exposure system is proposed which is positionable between a first object and a second object for imaging the first object in a region of the second object with light of a wavelength band having a width &dgr;&lgr; about a central working wavelength &lgr;, wherein a relative width &dgr;&lgr;/&lgr; of the wavelength band is larger than 0.002, in particular, larger than 0.005, for example, of the Hg-I-line. The projection exposure system is a so-called three-bulge system comprising three bulges having, as a whole, a positive refractive power and two waists having, as a whole, a negative refractive power. By applying suitable measures, in particular, by suitably selecting the material for the lenses forming the projection exposure system, the long-term stability of the system is increased.

    摘要翻译: 提出了一种投影曝光系统,其可定位在第一物体和第二物体之间,用于在具有围绕中心工作波长λ的宽度偏差的波长带的光的第二物体的区域内成像第一物体,其中相对宽度 波长带的偏差λ/λ大于0.002,特别是大于0.005,例如Hg-I线。 投影曝光系统是所谓的三凸起系统,其包括总体上具有正屈光力的三个凸起,以及整体上具有负屈光力的两个凸起。 通过适当的措施,特别是通过适当选择形成投影曝光系统的透镜的材料,可以提高系统的长期稳定性。