公开(公告)号：US4580078A

公开(公告)日：1986-04-01

申请号：US575854

申请日：1984-02-01

申请人： Dieter Spannhake

发明人： Dieter Spannhake

IPC分类号： H01J29/00 ,  H01J29/70 ,  H01J29/76 ,  H04N9/28 ,  H01J29/06

CPC分类号： H04N9/28 ,  H01J29/003 ,  H01J29/703 ,  H01J29/76 ,  H01J2229/003 ,  H01J2229/964

摘要： To correct the beam direction, and thus the color purity of color television tubes, particularly in tubes having fixedly secured deflection systems (10), the deflection field is, upon adjustment for color purity, additionally modified by introducing a unidirectional magnetic field extending with its field lines parallel to the z-axis of the tube. After adjustment to move a predetermined color, for example red, from non-deflected or hardly deflected central beam positions into the center of the CRT, the d-c unidirectional field is then disconnected, and the apertured mask demagnetized, as conventional. For demagnetization, the already present demagnetization coil (9) on the tube may be used, by applying a constant voltage thereto, for example of 12 V. The decaying demagnetizing field can be derived from a transformer connected to network power (FIG. 2) or through an oscillatory circuit formed by a charge capacitor (17).

摘要翻译： 为了校正光束方向，并因此校正彩色电视管的颜色纯度，特别是在具有固定的偏转系统（10）的管中，偏转场在色纯度调节时通过引入一个与其相对应的单向磁场 平行于管的z轴的场线。 在调整之后，将预定的颜色（例如红色）从未偏转或几乎不偏转的中心光束位置移动到CRT的中心，然后断开d-c单向场，并且有孔掩模如常规那样消磁。 对于退磁，可以通过向其施加例如12V的恒定电压来使用管上已经存在的去磁线圈（9）。衰减退磁场可以从连接到网络功率的变压器（图2）导出， 或通过由充电电容器（17）形成的振荡电路。

公开(公告)号：US4000432A

公开(公告)日：1976-12-28

申请号：US599272

申请日：1975-07-25

申请人： Warren P. Coon ,  Elisha B. Merritt

发明人： Warren P. Coon ,  Elisha B. Merritt

IPC分类号： H01J29/00 ,  H01J29/86 ,  H01J1/52

CPC分类号： H01J29/867 ,  H01J29/003 ,  H01J2229/003

摘要： Intensifier tubes for x-rays or low-light levels form an image of photoelectrons which is focused on a fluorescent viewing screen. Stray magnetic fields, including the earth's field, bend the electron trajectories and distort the image. Magnetic shielding has been used around the tube, leaving the image-receiving end open. Magnetic field leaking through the open end is reduced by extending the end of the shield around the image-receiving aperture inward and forward of the edge of the tube.

摘要翻译： 用于x射线或低光级的增强管形成聚焦在荧光观察屏上的光电子的图像。 杂散磁场，包括地球场，弯曲电子轨迹并扭曲图像。 管周围已经使用磁屏蔽，使图像接收端打开。 通过将图像接收孔周围的图像接收孔的端部延伸到管的边缘的内部和前部来减小通过开口端泄漏的磁场。

公开(公告)号：US3887833A

公开(公告)日：1975-06-03

申请号：US4082770

申请日：1970-05-27

申请人： HITACHI LTD

发明人： YAMAZAKI EIICHI

IPC分类号： H01J29/00 ,  H01J29/70

CPC分类号： H01J29/702 ,  H01J29/003 ,  H01J2229/003 ,  H01J2229/0053 ,  H01J2229/5637

摘要： A color purity adjusting device for a color picture tube, provided with one or more types of correcting coils which are wound on the outer periphery of the color picture tube in order to correct any mislanding of an electron beam due to deformation which might take place during the manufacturing process of the color picture tube, such as, a distortion of a shadow mask or of a glass bulb and to correct any mislanding of the same due to the influence of same external magnetic field such as the earth''s magnetism, thereby to obtain a picture of improved color purity.

摘要翻译： 一种用于彩色显像管的色纯度调节装置，其具有一个或多个类型的校正线圈，其被缠绕在彩色显像管的外周上，以便校正由于可能发生的变形引起的电子束的任何误着地 彩色显象管的制造过程，例如荫罩或玻璃灯泡的变形，并且由于诸如地球磁性的相同的外部磁场的影响来校正其偏移，从而获得 图片色彩纯度提高。

公开(公告)号：US2921226A

公开(公告)日：1960-01-12

申请号：US58698856

申请日：1956-05-24

申请人： PHILCO CORP

发明人： VASILEVSKIS HENRY S

IPC分类号： H01J29/00 ,  H01J29/70 ,  H04N9/29

CPC分类号： H01J29/703 ,  H01J29/003 ,  H01J2229/003 ,  H01J2229/5637 ,  H04N9/29