Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1993-09-24
1995-07-04
Yusko, Donald J.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313414, H01J 2946
Patent
active
054303494
ABSTRACT:
An improved color picture tube includes a screen and an inline gun for generating and directing three inline electron beams along separate paths toward the screen. The electron gun includes electrodes that provide a beam-forming region, a prefocus region and a main focus region. The beam-forming region of the gun includes a cathode, a G1 electrode, a G2 electrode and a first portion of a G3 electrode. The prefocus region includes a second portion of the G3 electrode, a G4 electrode and a first portion of a G5 electrode. The main focus region includes a second portion of the G5 electrode and a G6 electrode. The improvement resides in the beam-forming region, the prefocus region and the main focus region each being astigmatic.
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Garnier Jean-Pierre
New David A.
Paul Walter B.
Trinchero Olivier P.
Irlbeck Dennis H.
Patel N. D.
Thomson Tubes and Displays, S.A.
Tripoli Joseph S.
Yusko Donald J.
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