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    Charged particle pattern imaging and exposure system
    61.
    发明授权
    Charged particle pattern imaging and exposure system 失效
    充电颗粒图像成像和曝光系统

    公开(公告)号：US3614423A

    公开(公告)日：1971-10-19

    申请号：US3614423D

    申请日：1970-09-21

    Applicant: STANFORD RESEARCH INST

    Inventor： HEYNICK LOUIS N ,  WESTERBERG EUGENE R

    IPC: G03G15/32 ,  H01J37/12 ,  H01J37/30 ,  H05K3/02

    CPC classification number: H01J37/3007 ,  G03G15/321 ,  H01J37/12 ,  H05K3/027 ,  H05K2203/092 ,  H05K2203/107

    Abstract: A charged-particle beam-pattern forming and imaging system is disclosed in which charged particles from one or more sources impinge upon an imaging plate. A high-voltage electrical source is connected between the imaging plate and a target to produce a strong electrical field therebetween. The imaging plate contains one or more long and narrow slits which may be straight or curved to any desired configuration. Each slit functions as a lens to yield one image of itself for each particle source, each image being converged only along the width of the slit (one-dimension convergence). Proper choices of the pattern of the particle sources and the slit arrangement in the imaging plate yield a variety of patterns useful in many applications, such as closely spaced parallel lines for diffraction gratings, interdigital patterns for microwave devices, meander lines, and interconnections for integrated circuits, by formation of the entire patterns at once rather than by the scanning or other sequential techniques used heretofore.

    Active impedance matching of microwave acoustic devices
    62.
    发明授权
    Active impedance matching of microwave acoustic devices 失效
    微波声学器件的主动阻抗匹配

    公开(公告)号：US3594593A

    公开(公告)日：1971-07-20

    申请号：US3594593D

    申请日：1969-05-02

    Applicant: STANFORD RESEARCH INST

    Inventor： HO RAYMOND Y-C ,  BAHR ALFRED J

    IPC: H03H9/30 ,  H03H11/28 ,  H03H7/38

    CPC classification number: H03H11/28 ,  H03H9/30

    Abstract: The impedance of delay lines (particularly acoustic delay lines) is matched to the microwave source utilizing active networks synthesized from inverted common collector transistor circuits. The active inductance and negative resistance generated by the inverted common collector transistor circuits are connected across input terminals of the delay line and matching is improved by connecting an active negative resistance in series between source input terminal and a delay line input terminal.

    Capillary gas splitting device
    63.
    发明授权
    Capillary gas splitting device 失效
    毛细管气体分离装置

    公开(公告)号：US3590866A

    公开(公告)日：1971-07-06

    申请号：US3590866D

    申请日：1969-09-10

    Applicant: STANFORD RESEARCH INST

    Inventor： BROWNLEE ROBERT G

    IPC: F16L19/065 ,  F16L39/00 ,  G01N30/10 ,  G01N30/62 ,  G01N30/84 ,  G05D11/00 ,  F15B21/04

    CPC classification number: F16L19/065 ,  F16L39/00 ,  G01N30/10 ,  G01N30/62 ,  G01N30/84 ,  G05D11/006 ,  Y10T137/8593

    Abstract: A capillary gas-splitting device incorporating a gas-receiving fitting provided at one end with a cylindrical bore and, leading therefrom, a pair of gas outlet tubes between which the entrant gas is split in a ratio which remains constant despite varying gas inlet pressures and flow rates. The first of said tubes incorporates a relatively short section of capillary tubing at any position along its length, and it opens into the bore adjacent the bottom thereof. The second of said tubes is of capillary size and extends into the bore with its extremity running axially thereof for opening against the incoming gas. Though admitted under pressure, the gas is discharged from each tube at atmospheric pressure, and the ratio of the flow rate of incoming gas passing through the one tube as compared with that through the other is directly proportional to the respective capillary lengths in the two tubes. The capillary tube is adapted at its gas-entrant end to receive lengths of wire of extremely small diameter whereby the split ratio of gases passing through the two tubes may be changed as desired. The exit end of the capillary tube may be provided with a fitting adapted to receive nitrogen or other inert gases and to discharge the same in an annular fashion about the end of the capillary tube for even mixing with the gas stream discharged therefrom.

    Method of and apparatus for fast averaging of repetitive signals with an image storage tube
    64.
    发明授权
    Method of and apparatus for fast averaging of repetitive signals with an image storage tube 失效
    用图像存储管快速平均重复信号的方法和装置

    公开(公告)号：US3582775A

    公开(公告)日：1971-06-01

    申请号：US3582775D

    申请日：1969-01-24

    Applicant: STANFORD RESEARCH INST

    Inventor： CORNSWEET TOM N

    IPC: G06G7/18 ,  H04B15/00 ,  G01R23/16

    CPC classification number: G06G7/18 ,  H04B15/00

    Abstract: A method and apparatus is disclosed for averaging repetitive signals to increase the signal-to-noise ratio comprising a cathode-ray tube on which the signal is displayed as an intensity modulated horizontal line. The face of the cathode-ray tube is focused by a lens onto the photosensitive surface of an image storage tube, thereby causing the image tube to store a charge pattern that is proportional to the total amount of light that has fallen on it during a number (n) of horizontal sweep cycles of the cathode-ray tube. An electron beam inside the image tube scans the charge pattern every n-th cycle of the cathode-ray tube to produce a video signal that is proportional to the sum of all the signal-plus-noise events displayed on the cathode-ray tube since the last scan.

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