1.
    发明专利
    失效

    公开(公告)号:JPS5324296B2

    公开(公告)日:1978-07-20

    申请号:JP6986175

    申请日:1975-06-10

    SURFACE CONDUCTION TYPE ELECTRON EMITTING ELEMENT

    公开(公告)号:JPH02112125A

    公开(公告)日:1990-04-24

    申请号:JP18549588

    申请日:1988-07-27

    Applicant: CANON KK

    Abstract: PURPOSE:To reduce the flicker of a luminous part by electron beams by providing a high potential side electrode on a base surface, providing an electron emitting part in contact with the circumference of the exposed part of this high potential side electrode, and further providing a low potential side electrode in contact with the circumference of the electron emitting part. CONSTITUTION:When a voltage is applied to an accelerating power source 6, electrons tend to converge into the center as the whole. The reason is that as a high potential side electrode 1 has a high potential and a low potential side electrode 2 has a low potential, such a potential distribution that the electrons are converged to the high potential side of the center is generated. Hence, when the electrons are converged to a target electrode 9 by using the accelerating power source 6, a satisfactory convergence property can be obtained without providing an external convergence lens such as a lens electrode as in the past. Thus, as the conventional electrode and convergence lens are made into an integral combined structure of the high potential side electrode 1 and the low potential side electrode 2, the electron beams can be converged into a particular place, or the vertical direction of the center point of this element.

    8.
    实用新型
    失效

    公开(公告)号:JPS54100555U

    公开(公告)日:1979-07-16

    申请号:JP17495477

    申请日:1977-12-27

    10.
    发明专利
    失效

    公开(公告)号:JPS534388B1

    公开(公告)日:1978-02-16

    申请号:JP6035371

    申请日:1971-08-11

    Abstract: In an electron gun, an anode structure in which the electron beam aperture is defined by four mutually insulated anode segments which may be energized to provide beam centering. In a preferred embodiment, the anode segments are shaped to intercept the beam if it is off-center, and are returned to ground potential through respective resistors thereby being operative automatically to center the beam.

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