Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1983-05-06
1985-05-28
Moore, David K.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313414, H01J 2951, H01J 2954
Patent
active
045202923
ABSTRACT:
An inline electron gun for a cathode-ray tube includes a plurality of cathodes, a control grid, a screen grid and a main focus lens arranged successively in alignment with the cathodes for focusing a plurality of electron beams along beam paths onto a screen. The screen grid has a functional grid area with a given thickness. A recessed portion is formed within the functional grid area. A plurality of apertures are formed within the recessed portion of the screen grid. The recessed portion is surrounded by a peripheral rim which is in proximity to the outer apertures thereby affecting the electrostatic field in the vicinity of the outer electron beam paths.
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patent: 3772554 (1973-11-01), Hughes
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patent: 4319163 (1982-03-01), Chen
Chen Hsing-Yeo
van Hekken Frans
Coughlin Jr. Vincent J.
Irlbeck Dennis H.
Moore David K.
RCA Corporation
Whitacre Eugene M.
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