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    • 92. 发明申请
    • Optical system and method for improving imaging properties thereof
    • 用于改善其成像特性的光学系统和方法
    • US20070071303A1
    • 2007-03-29
    • US11238841
    • 2005-09-29
    • Thomas StammlerChristian WagnerGerd Reisinger
    • Thomas StammlerChristian WagnerGerd Reisinger
    • G06K9/00
    • G03F7/70258G03F7/705G03F7/706
    • An optical system has at least two optical elements whose spatial relation with respect to each other can be changed. At least one of the optical elements comprises a plurality of optical components. The optical system comprises first measuring means for individually measuring an image defect of each optical component, and first computing means for computing first target positions for the plurality of optical components such that an overall image defect of the at least one of the optical elements is below a predetermined threshold value. Second measuring means are provided for measuring an overall image defect of the optical system, and second computing means represent the measured overall image defect as a linear combination of base functions of an orthogonal function set. The second computing means calculate second target position for the at least two optical elements so as to reduce the overall image defect.
    • 光学系统具有至少两个可相对于彼此的空间关系的光学元件。 至少一个光学元件包括多个光学部件。 光学系统包括用于单独测量每个光学部件的图像缺陷的第一测量装置和用于计算多个光学部件的第一目标位置的第一计算装置,使得至少一个光学元件的整体图像缺陷低于 预定的阈值。 提供第二测量装置用于测量光学系统的整体图像缺陷,第二计算装置将所测量的整体图像缺陷表示为正交函数集的基本函数的线性组合。 第二计算装置计算用于至少两个光学元件的第二目标位置,以便减小整体图像缺陷。
    • 99. 发明授权
    • Optical arrangement
    • 光学布置
    • US06781668B2
    • 2004-08-24
    • US09752282
    • 2000-12-29
    • Karl-Heinz SchusterHubert HoldererRudolf Von BünauChristian WagnerJochen BeckerStefan XalterWolfgang Hummel
    • Karl-Heinz SchusterHubert HoldererRudolf Von BünauChristian WagnerJochen BeckerStefan XalterWolfgang Hummel
    • G03B2752
    • G03F7/70058G03F7/70216G03F7/70891
    • An optical arrangement, in particular a microlithographic projection printing installation, has in particular a slot-shaped image field or rotationally non-symmetrical illumination. An optical element (5) is therefore acted upon in a rotationally non-symmetrical manner by the radiation of a light source. To temper the optical element (5), a supply apparatus (11, 19 to 23) for gas is used. The latter having at least one supply line (21) and at least one gas directing device (11). The latter is aligned relative to the optical element (5) and controllable in such a way that the gas is directed by the gas directing device (11) towards the optical element (5). The volumetric flow of the exiting gas therefore has a magnitude and spatial distribution (17), which are adapted to the intensity distribution (6) of the radiation. By virtue of such tempering, rotationally non-symmetrical light-induced image defects in the optical element (5) are avoided or compensated.
    • 光学布置,特别是微光刻投影印刷装置,特别地具有槽形图像场或旋转非对称照明。 因此,光学元件(5)通过光源的辐射以旋转非对称的方式作用。 为了回火光学元件(5),使用用于气体的供给装置(11,19〜23)。 后者具有至少一个供应管线(21)和至少一个气体引导装置(11)。 后者相对于光学元件(5)对准并且可以以气体被气体引导装置(11)引向光学元件(5)的方式控制。 因此,出口气体的体积流量具有适于辐射的强度分布(6)的大小和空间分布(17)。 由于这种回火,避免或补偿光学元件(5)中的旋转非对称的光诱导图像缺陷。