Gridded electron gun
AssigneeLitton Systems, Inc.
InventorsRichard B. True, Donald E. Laycock
Life of this patent
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Abstract
An improved grid arrangement is shown for a gridded electron gun wherein the control grid and/or shadow grid is provided with tapering grid vanes which reduce the amount of voltage required to cut off the electron beam. Alternately, a fewer number of grid vanes may be utilized to accomplish the same cutoff of the electron beam thus reducing the loading on the cathode and improving the transmission of the electron beam.
Claims8
An improved gridded electron gun having an anode, a cathode, and at least one grid member mounted there between for controlling the flow of electrons from said cathode toward said anode, the improvement of said grid member comprising:
- an outer periphery having a greater surface area than its inner regions;
- a plurality of apertures separated by grid vanes, wherein said grid vanes taper from a narrow inner width toward a wider outer width making up said greater surface area.
An improved electron gun having a cathode and an anode and control grid mounted there between for terminating the flow of electrons from said cathode to said anode when a biasing voltage is applied to said control grid, the improvement of said control grid comprising:
- grid vanes having greater surface area at the outer periphery than the inner regions of said vanes which form said control grid wherein fewer grid vanes are required to terminate said flow of electrons when said bias voltage is applied thereto, for improved electron transmission.
Dependencies are inferred from the claim text.