Multibeam electron gun with composite electrode having plurality of separate metal plates
AssigneeRCA Corporation
InventorHarry E. McCandless
Life of this patent
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Abstract
A multibeam electron gun comprising two spaced successive electrodes individually held in position from a common support. One electrode comprises a single metal first plate having at least three electron-beam-defining first apertures therein. The other electrode is a composite structure comprising (a) a single metal second plate having a window therein opposite each of said first apertures and (b) a separate metal third plate attached to said second plate closing each of the windows. The third plate has a single electron-beam-defining second aperture therein separately aligned with one of the first apertures.
Claims4
In a multi-beam electrode gun comprising at least two spaced successive electrodes individually held in position from a common support, one of said electrodes comprising a single metal first plate having at least three electron-beam-defining first apertures therein,
- the improvement wherein said other electrode is a composite structure comprising (a) a single metal second plate having a window therein opposite each of said first apertures and (b) a plurality of separate metal third plates attached to said metal second plate, with one of said plurality of third plates closing each of said windows, each of said third plates having a single beam-defining second aperture therein separately aligned to one of said beam-defining first apertures.
Dependencies are inferred from the claim text.