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    • 1. 发明授权
    • Scanning microscopy using inhomogeneous polarization
    • 扫描显微镜使用不均匀的极化
    • US08228601B2
    • 2012-07-24
    • US12464761
    • 2009-05-12
    • Doron MeshulachKobi KanHaim FeldmanIdo DolevOri Sarfaty
    • Doron MeshulachKobi KanHaim FeldmanIdo DolevOri Sarfaty
    • G02B27/28
    • G02B21/0092G02B21/0068
    • Apparatus for imaging a surface, including an acousto-optic (AO) system. The AO system includes an AO element having a radiation input surface and a radiation output surface. The element is configured to receive radio-frequency (RF) pulses and a radiation input at the radiation input surface and to generate traveling beams from the radiation output surface. The AO system also includes an inhomogeneous polarization generator, positioned relative to the AO element so that the AO system outputs traveling inhomogeneously polarized beams. The apparatus includes objective optics which are configured to focus the inhomogeneously polarized beams onto the surface so as to form respective traveling spots thereon; collection optics, which are configured to collect scattered radiation from the traveling spots and to focus the scattered radiation to form respective image spots; and a detector which is arranged to receive the respective image spots and to generate a signal in response thereto.
    • 用于对表面进行成像的装置,包括声光(AO)系统。 AO系统包括具有辐射输入表面和辐射输出表面的AO元件。 该元件被配置为在辐射输入表面处接收射频(RF)脉冲和辐射输入并且产生来自辐射输出表面的行进光束。 AO系统还包括相对于AO元件定位的不均匀偏振发生器,使得AO系统输出行进的非均匀偏振光束。 该装置包括被配置为将不均匀偏振光束聚焦到表面上以在其上形成相应的行进点的物镜光学元件; 收集光学器件,其被配置为从所述行进点收集散射的辐射并且聚焦所述散射的辐射以形成相应的图像斑点; 以及检测器,其被布置成接收相应的图像点并响应于此产生信号。
    • 6. 发明授权
    • Dynamic automatic focusing method and apparatus using interference patterns
    • 动态自动聚焦方法和装置采用干涉图案
    • US06794625B2
    • 2004-09-21
    • US09855253
    • 2001-05-15
    • Haim Feldman
    • Haim Feldman
    • G02B2740
    • G03F7/70616G02B21/241G03F9/7026G11B7/0908G11B7/0917
    • Method and apparatus to enable detection of a position of an article, and thereby enable maintenance of a desired position thereof. The apparatus includes an illumination unit, focusing optics and a focus detection unit, the focusing optics serving to direct incident light toward the article and directing light returned from an illuminated elongated region on the article toward the focus detection unit. The focus detection unit includes an optical system that collects the returned light passed through the focusing optics and creates at least two images in the form of at least two interference patterns, respectively, on the sensing surface of a detector. The first interference pattern is created by interference of light components of the collected light that propagated within a first periphery region of an optical axis of the focusing optics and light components of the collected light that propagated within a paraxial region of the optical axis. The second interference pattern is created by interference between light components of the collected light that propagated with a second periphery region of the optical axis, symmetrical to the first periphery region with respect to the optical axis. and light components of the collected light that propagated within the paraxial region. Data indicative of a relation between intensity profiles in the two interference patterns is utilized to determine the location of the article relative to the focal plane.
    • 能够检测制品位置的方法和装置,从而能够维持其所需的位置。 该装置包括照明单元,聚焦光学元件和焦点检测单元,聚焦光学器件用于将入射光引向物品并将从物体上的照明细长区域返回的光导向焦点检测单元。 焦点检测单元包括光学系统,其收集通过聚焦光学器件的返回光,并且分别在检测器的感测表面上产生至少两个干涉图案形式的至少两个图像。 第一干涉图案是通过在聚焦光学器件的光轴的第一周边区域内传播的收集的光的光分量的干涉和在光轴的近轴区域内传播的所收集的光的光分量的干涉而产生的。 第二干涉图案是通过与光轴的第二周边区域相对于光轴对称的与第一周边区域对称的收集的光的光分量之间的干涉而产生的。 以及在近轴区域内传播的收集的光的光分量。 利用表示两个干涉图案中的强度分布之间的关系的数据来确定物品相对于焦平面的位置。