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    • 4. 发明授权
    • Optical element, projection lens and associated projection exposure apparatus
    • 光学元件,投影透镜及相关投影曝光装置
    • US07738187B2
    • 2010-06-15
    • US12134062
    • 2008-06-05
    • Alexandra PazidisStephan SixRuediger DuesingGennady Fedosenko
    • Alexandra PazidisStephan SixRuediger DuesingGennady Fedosenko
    • G02B13/14
    • G02B21/33G03F7/70341G03F7/70958
    • An optical element (1) made of a material that is transparent to wavelengths in the UV region, which optical element (1) includes an oleophobic coating (6, 7) outside of its optically free diameter whose disperse component of the surface energy is preferably 25 mN/m or less, particularly preferably 20 mN/m or less, in particular 15 mN/m or less. In addition or as an alternative, the optical element (1) within its optically free diameter comprises an oleophilic coating (9b, 9c) that is transparent to wavelengths in the UV region, with the disperse component of the surface energy of this coating preferably being more than 25 mN/m, particularly preferably more than 30 mN/m, in particular more than 40 mN/m. The optical element may be provided in an arrangement in which it dips at least partially into an organic liquid.
    • 一种光学元件(1),其由对UV区域中的波长透明的材料制成,该光学元件(1)包括其光学自由直径外的疏油涂层(6,7),其表面能的分散分量优选为 25mN / m以下,特别优选为20mN / m以下,特别优选为15mN / m以下。 另外或作为替代,光学元件(1)在其光学自由直径内包括对UV区域中的波长透明的亲油涂层(9b,9c),该涂层的表面能的分散组分优选为 超过25mN / m,特别优选大于30mN / m,特别是大于40mN / m。 光学元件可以以其至少部分地浸入有机液体的布置来设置。
    • 6. 发明申请
    • Objective with crystal lenses
    • 目标水晶镜片
    • US20070242250A1
    • 2007-10-18
    • US11765200
    • 2007-06-19
    • Aksel GoehnermeierAlexandra PazidisBirgit KuerzChristoph ZaczekDaniel Kraehmer
    • Aksel GoehnermeierAlexandra PazidisBirgit KuerzChristoph ZaczekDaniel Kraehmer
    • G02B27/28G03B27/52H01L21/00
    • G02B1/02G02B1/08G02B5/3083G02B13/14G02B27/0043G02B27/286G03F7/70225G03F7/70241G03F7/70566G03F7/70958G03F7/70966
    • Objective, in particular a projection objective for a microlithography projection-exposure installation, with at least one fluoride crystal lens. A reduction in the detrimental influence of birefringence is achieved if this lens is a (100)-lens with a lens axis which is approximately perpendicular to the {100} crystallographic planes or to the crystallographic planes equivalent thereto of the fluoride crystal. In the case of objectives with at least two fluoride crystal lenses, it is favorable if the fluoride crystal lenses are arranged such that they are rotated with respect to one another. The lens axes of the fluoride crystal lenses may in this case point not only in the crystallographic direction but also in the crystallographic direction or in the crystallographic direction. A further reduction in the detrimental influence of birefringence is achieved by the simultaneous use of groups with (100)-lenses rotated with respect to one another and groups with (111)-lenses or (110)-lenses rotated with respect to one another. A further reduction in the detrimental influence of birefringence is obtained by covering an optical element with a compensation coating.
    • 目的,特别是具有至少一种氟化物晶体透镜的微光刻投影曝光装置的投影物镜。 如果该透镜是具有近似垂直于{100}晶面的透镜轴或与氟化物晶体相当的结晶平面的透镜轴,则实现双折射的有害影响的减小。 在具有至少两个氟化物晶体透镜的物镜的情况下,如果将氟化物晶体透镜相对于彼此旋转布置是有利的。 在这种情况下,氟化物晶体透镜的透镜轴不仅在<100>晶体方向,而且在<111>晶体方向或<110>晶体方向。 双折射的有害影响的进一步减少是通过同时使用具有相对于彼此旋转的(100) - 相的组和具有相对于彼此旋转的(111) - 透镜或(110)相的组而实现的。 通过用补偿涂层覆盖光学元件来获得双折射的有害影响的进一步减少。