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    • 72. 发明授权
    • Phosphor coated waveguide for efficient collection of electron-generated photons
    • 荧光涂层波导,用于有效收集电子生成的光子
    • US06775452B2
    • 2004-08-10
    • US09861036
    • 2001-05-18
    • Samuel C. Howells
    • Samuel C. Howells
    • G02B602
    • H01J37/244G02B6/241H01J2237/2443
    • A phosphor coated waveguide for efficient collection and detection of back-scattered electrons in an electron beam apparatus such as a scanning electron microscope is disclosed. The waveguide for directing photons to an optical detector generally comprises a first waveguide portion having opposing first and second faces defining a beveled hole therebetween to allow an electron beam to pass therethrough, the beveled hole decreasing in cross-sectional size from the first to the second face. A phosphor coating on the second face around the beveled hole converts the back-scattered electrons to photons. The first waveguide portion may include angled faces at an end further from the optical detector. A surface defined by the beveled hole and/or the angled faces may have a reflective coating. The waveguide may also include a second waveguide portion that adjoins and flares out relative to the first waveguide portion to further increase waveguide efficiency.
    • 公开了一种用于在诸如扫描电子显微镜的电子束装置中有效收集和检测反向散射电子的磷光体涂层波导。 用于将光子引导到光学检测器的波导通常包括第一波导部分,其具有相对的第一和第二面,在其间限定了一个斜面孔,以允许电子束通过,该斜面孔的横截面尺寸从第一到第二 面对。 在斜面孔周围的第二面上的荧光体涂层将后向散射的电子转换成光子。 第一波导部分可以包括在远离光学检测器的一端的成角度的表面。 由斜面孔和/或倾斜面限定的表面可以具有反射涂层。 波导还可以包括相对于第一波导部分邻接和扩张的第二波导部分,以进一步增加波导效率。
    • 73. 发明申请
    • Scanning atom probe and analysis method utilizing scanning atom probe
    • 扫描原子探针和分析方法利用扫描原子探针
    • US20030154773A1
    • 2003-08-21
    • US10333318
    • 2003-01-16
    • Osamu Nishikawa
    • G01B005/28
    • H01J49/40H01J37/256H01J37/285H01J49/06H01J2237/2443H01J2237/2446H01J2237/2818Y10S977/852
    • In a scanning atom probe (100), a surface topography of a specimen (3) is firstly analyzed by a surface topography analyzing unit (20). In the next place, an extraction electrode (5) is aligned to a desired area to be analyzed of a specimen surface. In case of analyzing electronic state of the area to be analyzed, negative bias voltage is impressed onto the specimen (3) from a direct current high voltage supply (2) and field emitted electrons are detected by a screen (9). In case of analyzing atomic arrangement and composition of the area to be analyzed, positive voltage is impressed onto the specimen (3) from the direct current high voltage supply (2) and a pulse generator (1) and positive ions generated by field evaporation are detected by a position sensitive ion detector (11) or a relfectron type mass analyzer (13).
    • 在扫描原子探针(100)中,首先通过表面形貌分析单元(20)分析样品(3)的表面形貌。 接下来,将取出电极(5)与要分析的试样表面的所需区域对准。 在分析要分析的区域的电子状态的情况下,从直流高压电源(2)将负偏压施加到样品(3)上,并且通过屏幕(9)检测场发射的电子。 在分析待分析区域的原子排列和组成的情况下,从直流高压电源(2)和脉冲发生器(1)向样品(3)施加正电压,通过场蒸发产生的正离子为 通过位置敏感离子检测器(11)或再生型质量分析仪(13)检测。
    • 75. 发明授权
    • Reflected electron detector and a scanning electron microscope device
using it
    • 反射电子检测器和使用它的扫描电子显微镜装置
    • US6031230A
    • 2000-02-29
    • US966923
    • 1997-11-10
    • Jiro Toumatsu
    • Jiro Toumatsu
    • H01J37/244H01J37/28H01J37/29
    • H01J37/228H01J37/244H01J2237/2443
    • In a scanning electron microscope device having the plastic scintillator type reflected electron detector 17 that is installed below the front end surface 14a of the object lens 14 to detect reflected electrons from the specimen, the reflected electron detector 17 has the front end portion 38 of its scintillator 17a formed into the semicircular portion 44 having a radius almost equal to the radius of the front end surface 14a of the object lens 14. At least a part of the edge of the semicircular portion 44 is formed with the notched surface 39 that extends along the extension of the inclined surface 14b of the object lens 14. This increases the viewing angle of the optical microscope, which is used to locate the position of the specimen being observed, and also increases the solid angle of the detection plane of the detector with respect to the specimen. The reflected electron detector thus can arrest reflected electrons from the specimen efficiently.
    • 在具有塑料闪烁体型反射电子检测器17的扫描电子显微镜装置中,反射电子检测器17的前端部38位于物镜14的前端面14a的下方,检测来自检体的反射电子, 形成半圆形部分44的闪烁体17a的半径几乎等于物镜14的前端表面14a的半径。半圆形部分44的边缘的至少一部分形成有沿着延伸的切口表面39 物镜14的倾斜表面14b的延伸。这增加了用于定位被观察的样本的位置的光学显微镜的视角,并且还增加了检测器的检测平面的立体角 尊重标本。 因此,反射的电子检测器可以有效地阻止来自标本的反射电子。
    • 79. 发明授权
    • Scanning electron microscope
    • 扫描电子显微镜
    • US4818874A
    • 1989-04-04
    • US181201
    • 1988-04-13
    • Toyoji Ishikawa
    • Toyoji Ishikawa
    • H01J37/244H01J37/28H01J37/256
    • H01J37/28H01J37/244H01J2237/2443H01J2237/2445H01J2237/2448H01J2237/24507
    • There is disclosed an electron microscope comprising a stage assembly for tilting, translating, or rotating the specimen, a first and a second detector disposed on opposite sides of the optical axis of the beam to detect secondary electrons produced in response to the incidence of the beam. The first detector is disposed relatively close to the optical axis. The second detector is located relatively remotely from the optical axis to prevent the state assembly from colliding against the detector when the assembly is tilted. The gains of the amplifiers to which the outputs of the first and second detectors are applied are made different to compensate for the imbalance between the intensities of the output signals from the detectors.
    • 公开了一种电子显微镜,其包括用于倾斜,平移或旋转试样的载物台组件,设置在所述束的光轴的相对侧上的第一和第二检测器,以检测响应于束的入射而产生的二次电子 。 第一检测器相对靠近光轴设置。 第二检测器位于相对远离光轴的位置,以防止当组件倾斜时状态组件与检测器碰撞。 使得施加第一和第二检测器的输出的放大器的增益不同,以补偿来自检测器的输出信号的强度之间的不平衡。