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 apparatus and method for operating the same
    10.
    发明授权
    Projection exposure apparatus and method for operating the same 有权
    投影曝光装置及其操作方法

    公开(公告)号:US07808615B2

    公开(公告)日:2010-10-05

    申请号:US11427183

    申请日:2006-06-28

    IPC分类号: G03B27/54 G03B27/32

    摘要: The invention concerns a method for operating a projection exposure apparatus to project the image of a structure of an object (5) arranged in an object plane (6) onto a substrate (10) arranged in an image plane (8). The object (5) is illuminated with light of an operating wavelength of the projection exposure apparatus according to one of several adjustable exposure modes. The light produces changes in at least one optical element (9) of the projection exposure apparatus, by which the optical properties of the projection exposure apparatus are influenced. The operation of the projection exposure apparatus makes allowance for the influencing of the optical properties of the projection exposure apparatus or a quantity dependent on the former, being calculated approximately on the basis of the exposure mode used and the structure of the object (5).

    摘要翻译: 本发明涉及一种用于操作投影曝光装置以将布置在物平面(6)中的物体(5)的结构的图像投影到布置在图像平面(8)中的基板(10)上的方法。 根据多种可调曝光模式之一,物体(5)被投影曝光装置的工作波长的光照射。 该光在投影曝光装置的至少一个光学元件(9)中产生变化,由此影响投影曝光装置的光学特性。 投影曝光装置的操作允许基于所使用的曝光模式和对象(5)的结构大致计算投影曝光装置的光学特性或取决于前者的光学特性的影响。