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    Multipoint field ionization source
    48.
    发明授权
    Multipoint field ionization source 失效
    多点场离子源

    公开(公告)号：US3852595A

    公开(公告)日：1974-12-03

    申请号：US29090072

    申请日：1972-09-21

    Applicant: STANFORD RESEARCH INST

    Inventor： ABERTH W

    IPC: H01J27/26 ,  H01J49/16 ,  H01J39/36 ,  H01J1/30

    CPC classification number: H01J49/168 ,  H01J27/26 ,  H01J2237/0807

    Abstract: A field ionizing source for ionizing components of a gas sample includes a multipoint array of conductive needle-like elements on a porous substrate. A grid is disposed in close proximity to the needle-like elements so that an ionizing electric field is generated between individual needle-like elements and the grid when a potential difference is established between the grid and array. The gas sample is introduced into the ionizing electric field zone by passing it through the back of the porous substrate and into the array between the needle-like elements so that substantially all of the gas is exposed to the ionizing electric field. Ions so produced are formed into an ion beam by a focusing electrode structure and directed into a spectrum analyzer and components of the gas sample are determined.

    Abstract translation: 用于气体样品的电离成分的场电离源包括多孔基底上的导电针状元件的多点阵列。 格栅靠近针状元件设置，使得当网格和阵列之间建立电位差时，在单个针状元件和电网之间产生电离电场。 将气体样品通过其穿过多孔基材的背面并引入到针状元件之间的阵列中而被引入电离电场区域，使得基本上所有的气体暴露于电离电场。 如此制造的离子通过聚焦电极结构形成离子束并被引导到光谱分析仪中并确定气体样品的组分。

    Electromechanical sweep generating system with the utilization of photocells
    49.
    发明授权
    Electromechanical sweep generating system with the utilization of photocells 失效
    电光扫描系统与光电子学的利用

    公开(公告)号：US3849698A

    公开(公告)日：1974-11-19

    申请号：US35423773

    申请日：1973-04-25

    Applicant: STANFORD RESEARCH INST

    Inventor： FROHBACH H

    IPC: H04N5/06 ,  G01S7/52 ,  H03K4/06 ,  H01J29/70

    CPC classification number: G01S7/52057 ,  H03K4/06

    Abstract: An electrical waveform is generated which is sinusoidal relative to the angular position of a shaft which rotates in a single direction by means of an optically sensed, or scanned, patterned disk affixed to the shaft to rotate in synchronism with it. The pattern on the disk primarily comprises uniformly spaced parallel lines on its face. In addition, a half revolution sensor such as a peripheral band having halves of differing optical properties is used. A first photocell scans the lines on the disk as it is rotated to count the number of lines and a second photocell scans the half revolution indicator, e.g., the peripheral band (outside track) of the disk. The first photocell produces a series of pulses indicative of the number of lines scanned and the second photocell produces an output which indicates when all of the lines on the face have been counted once and provides interlace between alternate counts. The number of lines scanned is added until they have all been counted once to produce the increasing half of the sinusoidal wave and then they are subtracted until they have all been counted a second time to produce the decreasing half of the sinusoidal wave. The sequence is repeated continuously to provide the desired waveform which is used as the vertical deflection voltage for a display device. Each line counted is also used to generate a horizontal sweep voltage for the display device so that in spite of the sinusoidal character of the vertical deflection, the lines composing the raster of the display are evenly and uniformly spaced.

    Abstract translation: 产生电波形，其相对于通过光学感测或扫描的图案化盘在单个方向上旋转的轴的角位置是正弦的，该盘固定到轴上以与其同步旋转。 盘上的图案主要包括在其表面上均匀间隔开的平行线。 此外，使用半旋转传感器，例如具有不同光学性质的一半的周边带。 第一光电管在旋转时扫描盘上的线以计数线数，而第二光电管元件扫描半转指示器，例如盘的外围带（外轨道）。 第一个光电管产生一系列指示被扫描线的数量的脉冲，而第二光电管产生一个输出，该输出指示何时所有的线上的线已被计数一次，并提供交替计数之间的交错。 扫描的行数被添加，直到它们全部被计数一次以产生正弦波的增加的一半，然后将它们减去，直到它们全部被计数第二次以产生正弦波的减小的一半。 连续重复该顺序以提供用作显示装置的垂直偏转电压的期望波形。 所计算的每一行也用于产生用于显示装置的水平扫描电压，使得即使垂直偏转的正弦曲线，构成显示器的光栅的线也均匀均匀地间隔开。

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