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    • 66. 发明授权
    • Monochromator and scanning electron microscope using the same
    • 单色器和扫描电子显微镜使用相同
    • US07315024B2
    • 2008-01-01
    • US11344529
    • 2006-02-01
    • Yoichi OseShunroku TayaHideo TodokoroTadashi OtakaMitsugu SatoMakoto Ezumi
    • Yoichi OseShunroku TayaHideo TodokoroTadashi OtakaMitsugu SatoMakoto Ezumi
    • G21K7/00G01N23/00
    • H01J37/05H01J37/153H01J37/28
    • An invention providing a scanning electron microscope composed of a monochromator capable of high resolution, monochromatizing the energy and reducing chromatic aberrations without significantly lowering the electrical current strength of the primary electron beam. A scanning electron microscope is installed with a pair of sectorial magnetic and electrical fields having opposite deflection directions to focus the electron beam and then limit the energy width by means of slits, and another pair of sectorial magnetic and electrical fields of the same shape is installed at a position forming a symmetrical mirror versus the surface containing the slits. This structure acts to cancel out energy dispersion at the object point and symmetrical mirror positions, and by spatially contracting the point-converged spot beam with a converging lens system, improves the image resolution of the scanning electron microscope.
    • 本发明提供一种扫描电子显微镜,该扫描电子显微镜由能够高分辨率,单色化能量和降低色差的单色仪组成,而不会显着降低一次电子束的电流强度。 扫描电子显微镜安装有一对具有相反偏转方向的扇形磁场和电场,以聚焦电子束,然后通过狭缝限制能量宽度,并且安装相同形状的另一对扇形磁场和电场 在与包含狭缝的表面形成对称镜的位置处。 该结构用于抵消物点和对称镜位置的能量分散,并通过会聚透镜系统空间收缩点聚光点光束,提高扫描电子显微镜的图像分辨率。
    • 69. 发明授权
    • Scanning electron microscope
    • 扫描电子显微镜
    • US5387793A
    • 1995-02-07
    • US133860
    • 1993-10-12
    • Mitsugu SatoHideo TodokoroTadashi Otaka
    • Mitsugu SatoHideo TodokoroTadashi Otaka
    • G01T1/28H01J37/244H01J37/28
    • H01J37/244H01J2237/2443H01J2237/28
    • Provided between an optical axis of a primary electron beam directed to a specimen and a secondary electron detector for detecting secondary electrons emitted from the specimen is a shielding electrode which has a transparency for secondary electrons and has a shielding effect for an attracting electric field produced by the secondary electron detector. An opposed electrode is provided at a position facing the shielding electrode with the optical path of the electron beam disposed therebetween. Applied across the shielding electrode and the opposed electrode is a voltage which produces a deflecting electric field along the electron beam path in the vicinity of the secondary electron detector. The deflecting electric field deflects the secondary electrons to the shielding electrode side so that they pass therethrough before they are captured by the secondary electron detector. Optical axis correction coils are provided for generating a magnetic field to correct any bending effect on the trajectory of the primary electron beam by the deflecting electric field.
    • 在被检测的一次电子束的光轴与用于检测从试样发出的二次电子的二次电子检测器之间设置有对二次电子具有透明性的屏蔽电极,并且具有对由吸收电场产生的吸引电场的屏蔽效果 二次电子检测器。 在面对屏蔽电极的位置处提供相对电极,其中电子束的光路设置在其间。 施加在屏蔽电极和相对电极两端的是在二次电子检测器附近沿着电子束路径产生偏转电场的电压。 偏转电场将二次电子偏转到屏蔽电极侧,使得它们在被二次电子检测器捕获之前通过它们。 光轴校正线圈用于产生磁场,以通过偏转电场来校正对一次电子束的轨迹的任何弯曲效应。