Electron gun having a low capacitance cathode and grid assembly

Details Electron gun having a low capacitance cathode and grid assembly Electron gun having a low capacitance cathode and grid assembly

1982-09-13

1985-02-19

LaRoche, Eugene R.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313447, 313448, 313451, 313449, 313456, H01J 2948

Patent

active

045008094

ABSTRACT:
A cathode and grid assembly includes a first grid of small diameter secured to a planar inner surface of a ceramic means and over a central opening in the ceramic means and a second grid having a first planar section secured to a planar outer surface of the ceramic means, a second planar section positioned within the central opening and a frustum of a cone section interconnecting the first and second planar sections with the frustum of a cone section extending along a frustum of a cone outer surface of the ceramic means.

REFERENCES:
patent: 2310811 (1943-02-01), Schantl et al.
patent: 2443916 (1948-06-01), Kelar
patent: 2458962 (1949-01-01), Shelton et al.
patent: 2540621 (1951-02-01), Johnson
Moss et al., "High Resolution Cathode Ray Tube", ASD TDR, 62-739, Oct. 1962.

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