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    • 8. 发明授权
    • Method, system, and computer program product for determining refractive index distribution
    • 确定折射率分布的方法
    • US06741362B2
    • 2004-05-25
    • US10138714
    • 2002-05-06
    • Stanislav SmirnovMark L. OskotskyLev SakinJohn D. Martin
    • Stanislav SmirnovMark L. OskotskyLev SakinJohn D. Martin
    • G01N2141
    • G01N21/45
    • The present invention provides a method and system for determining three-dimensional refractive gradient index distribution. The method and system of the present invention determine inhomogeneity data and calculate index of refraction changes in three-dimensions (3D). The method and system provide 3D modeling of an optical object or system that determines the three-dimensional distribution of the refractive index in the object. In one embodiment, the optical object is a blank. In different embodiments, the optical system is more than one blank. In alternative embodiments, the optical system can be a projection optics system that can include optical components such as lenses, filters, plates, and prisms. The present invention also provides a method for selecting a plurality of preferred optical elements to assemble a composite optical system with predetermined parameters.
    • 本发明提供一种用于确定三维折射梯度指数分布的方法和系统。 本发明的方法和系统确定不均匀性数据并计算三维(3D)中的折射变化指数。 该方法和系统提供了确定物体中折射率的三维分布的光学对象或系统的3D建模。 在一个实施例中,光学对象是空白的。 在不同的实施例中,光学系统是多于一个空白的。 在替代实施例中,光学系统可以是可以包括诸如透镜,滤光器,板和棱镜的光学部件的投影光学系统。 本发明还提供一种用于选择多个优选光学元件以组合具有预定参数的复合光学系统的方法。
    • 9. 发明授权
    • Off-axis catadioptric projection optical system for lithography
    • 用于光刻的离轴反射折射投影光学系统
    • US07511798B2
    • 2009-03-31
    • US10902469
    • 2004-07-30
    • Stanislav SmirnovMark Oskotsky
    • Stanislav SmirnovMark Oskotsky
    • G03B27/42G03B27/70
    • G03B27/54G02B17/0812G03F7/70225
    • An off-axis catadioptric projection optical systems for use in lithography tools for processing modulated light used to form an image on a substrate is provided. In one embodiment the optical system includes an off-axis mirror segment, a fold mirror, a relay, an aperture stop and a refractive lens group. Modulated light is transmitted through the system to form an image on a substrate. In a second embodiment the projection system includes an off-axis mirror segment, an aperture stop and a refractive lens group. In a third embodiment the projection system includes an off-axis mirror segment, a negative refractive lens group, a concave mirror, a relay, an aperture stop, and a refractive lens group. A method to produce a device using a lithographic apparatus including a projection system with an off-axis mirror segment as the first element in a projection optics system is also provided.
    • 提供了用于光刻工具中用于处理用于在基板上形成图像的调制光的离轴反射折射投影光学系统。 在一个实施例中,光学系统包括离轴镜片段,折叠镜,继电器,孔径光阑和折射透镜组。 调制光通过系统透射以在基底上形成图像。 在第二实施例中,投影系统包括离轴镜片段,孔径光阑和折射透镜组。 在第三实施例中,投影系统包括离轴镜片段,负折射透镜组,凹面镜,继电器,孔径光阑和折射透镜组。 还提供了使用包括具有离轴镜片段的投影系统作为投影光学系统中的第一元素的光刻设备的方法。
    • 10. 发明授权
    • High numerical aperture projection system and method for microlithography
    • 高数值孔径投影系统和微光刻法
    • US07317583B2
    • 2008-01-08
    • US10224485
    • 2002-08-21
    • Mark L OskotskyStanislav Smirnov
    • Mark L OskotskyStanislav Smirnov
    • G02B17/08
    • G03F7/70225G02B17/08G02B17/0892G03F7/70275
    • The present invention relates to a high numerical aperture exposure system having a wafer. The exposure system in the present invention includes a beam-splitter, a reticle, a reticle optical group, where the reticle optical group is placed between the reticle and the beam-splitter, a concave mirror, a concave mirror optical group, where the concave mirror optical group is placed between the concave mirror and the beam-splitter, a fold mirror, where the fold mirror is placed between the beam-splitter and the wafer, and a wafer optical group, where the wafer optical group is placed between the beam-splitter and the wafer. In the present invention, a beam of light is directed through the reticle and the reticle optical group to the beam-splitter, then it is reflected by the beam-splitter onto the concave mirror. Concave mirror reflects the light onto the fold mirror through the beam-splitter. Fold mirror reflects the light onto the wafer through the wafer optical group. The present invention forms an intermediate image between the fold mirror and the wafer optical group. Furthermore, in an embodiment an aperture stop can be placed between the concave mirror optical group and the concave mirror.
    • 本发明涉及具有晶片的高数值孔径曝光系统。 本发明的曝光系统包括光束分离器,光罩,光罩光学组,其中标线片光学组置于光罩和分光器之间,凹面镜,凹面镜光学组,其中凹面 反射镜光学组被放置在凹面镜和分光器之间,折叠镜放置在分束器和晶片之间的折叠镜和晶片光学组,其中晶片光学组被放置在光束 分配器和晶圆。 在本发明中,光束被引导通过光罩和光掩模光学组到分束器,然后被分束器反射到凹面镜上。 凹面镜通过分光镜将光反射到折叠镜上。 折叠镜通过晶片光学组将光反射到晶片上。 本发明在折射镜和晶片光学组之间形成中间图像。 此外,在一个实施例中,可以在凹面镜光学组和凹面镜之间设置孔径光阑。