Circuits and methods for electron-beam control
    5.
    发明授权
    Circuits and methods for electron-beam control 失效
    电子束控制的电路和方法

    公开(公告)号:US06617597B2

    公开(公告)日:2003-09-09

    申请号:US09997185

    申请日:2001-11-30

    Abstract: An electron-beam controller (EBC) capable of controlling the power in an electron-beam is disclosed. The EBC can be implemented with an emitter, an extractor, a current mirror, and an input current having a magnitude responsive to the desired electron beam current. An EBC suited for low-efficiency emitters is also disclosed. A method for controlling the power intensity of an electron-beam over time is also disclosed. The method includes the steps of: (1) providing an emitter at a first voltage, (2) providing a target at a second voltage, (3) introducing an extractor at a controllable third voltage, (4) estimating the actual electron beam energy by sensing the emitter current; and (5) adjusting the third voltage in response to the sensed emitter current.

    Abstract translation: 公开了一种能够控制电子束功率的电子束控制器(EBC)。 EBC可以用发射器,提取器,电流镜和具有响应于期望的电子束电流的量级的输入电流来实现。 还披露了适用于低效率发射器的EBC。 还公开了一种用于随时间控制电子束的功率强度的方法。 该方法包括以下步骤:(1)提供第一电压的发射极,(2)以第二电压提供目标,(3)以可控的第三电压引入提取器,(4)估计实际的电子束能量 通过感测发射极电流; 和(5)响应感测的发射极电流来调节第三电压。

    Cathode ray tube with a getter coating in the vicinity of a semiconductor cathode
    6.
    发明授权
    Cathode ray tube with a getter coating in the vicinity of a semiconductor cathode 失效
    在半导体阴极附近具有吸气剂涂层的阴极射线管

    公开(公告)号:US06262527B1

    公开(公告)日:2001-07-17

    申请号:US09153776

    申请日:1998-09-15

    CPC classification number: H01J29/94 H01J29/04 H01J29/485 H01J2201/308

    Abstract: Cathode ray tube comprising an electron gun which is constructed in such a way that the gas pressure near the electron-emissive layer (30) of the cathode is lower than in the other parts of the tube. This can be achieved by reducing the aperture between the G1 (33) and G2 (36), by providing the G2 (36) with a skirt (43). The wall of the skirt, the G1 and the G2 may also be at least partly coated with a getter (41).

    Abstract translation: 阴极射线管包括电子枪,其构造为使阴极的电子发射层(30)附近的气体压力低于管的其它部分中的气体压力。 这可以通过使G2(36)具有裙部(43)来减小G1(33)和G2(36)之间的孔径来实现。 裙部的壁,G1和G2也可以至少部分地涂覆有吸气剂(41)。

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