Color tv tube with coplanar arrangement of three electron guns

专利摘要:
An improved color picture tube has an inline electron gun for generating and directing three electron beams, a center beam and two side beams, along coplanar paths toward a screen of the tube. The gun includes a main focus lens for focusing the electron beams. The main focus lens is formed by two spaced electrode members each having three separate inline apertures therein. Each electrode also includes a peripheral rim. The peripheral rims of the two electrodes face each other. The apertured portion of each electrode is within a recess set back from the rim. The width of the recess in at least one of the electrodes is wider at the side beam paths than at the outer beam path, measured perpendicular to the plane containing the electron beam paths.
公开号:SU1501931A3
申请号:SU823467493
申请日:1982-07-09
公开日:1989-08-15
发明作者:Томас Гренингер Поль
申请人:Рка Корпорейшн (Фирма)；
IPC主号:

专利说明:

fiez
Compiled by S.Dotsenko Editor O.Spesyvykh Tehred M. Khodanych
Proofreader N. Borisov

权利要求:
Claims (1)
[1]
The claims 45
A color kinescope with a coplanar arrangement of three electronic projectors, including a screen and a main focusing lens formed by two cup-shaped electrodes facing one another with three identical openings aligned with the electronic projectors, the side surface of the holes being formed by flanges directed into the cavity of each electrode and the end planes of the holes are located inside
15 troughs formed in the electrodes by two flat sections parallel to the plane of the axes of the electronic projectors and two axisymmetric arcuate sections, characterized in that "in order to improve the focusing quality of the beams by reducing the distance between the flat sections of the troughs, M; the diameter of the arcuate sections of the depressions <1, the spherical aberration, the dimensions of the depressions are selected from the expression:
Where C - (

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US6411026B2|1993-04-21|2002-06-25|Hitachi, Ltd.|Color cathode ray tube|

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US5708322A|1993-04-21|1998-01-13|Hitachi, Ltd.|Color cathode ray tube with in-line electron gun|

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US5847500A|1995-03-02|1998-12-08|Hitachi, Ltd.|Electron gun for color cathode ray tube and method of manufacturing the electron gun electrode|

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US6255624B1|1999-12-22|2001-07-03|Visteon Global Technologies, Inc.|Electrically heated backlite assembly and method|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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US06/282,228|US4388552A|1981-07-10|1981-07-10|Color picture tube having an improved expanded focus lens type inline electron gun|

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