JPH0386555U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of main parts showing a first embodiment of the deflection yoke according to the present invention, Fig. 2 is a diagram showing the arrangement of magnets in the same embodiment, and Fig. 3 is a diagram showing the tube axis direction of the magnet in the same embodiment. FIG. 4 is an explanatory diagram showing another example of the arrangement of magnets for correcting focus distortion on the diagonal axis of the screen of a cathode ray tube, and FIG. Figure 5b is a pattern diagram of focus distortion on the diagonal axis; Figure 5b is a pattern diagram of focus distortion on the X and Y axes of the cathode ray tube; Figure 5c is a pattern diagram of the focus spot after correction; Figure 6 7 is a main part configuration diagram of a second embodiment of the deflection yoke according to the present invention, and FIG. 7 is a diagram showing another arrangement example of magnets for correcting focus distortion on the X-axis and Y-axis on the screen of a cathode ray tube. 8 is a rear view of a conventional deflection yoke equipped with a rotating magnet as seen from the neck side, FIG. 9 is a pattern diagram of focus distortion that can be corrected by the rotating magnet of FIG. 8, and FIG. FIG. 9 is an explanatory diagram of the focus distortion correction effect by the rotating magnet of FIG. 8; 1...Deflection yoke, 2...Rotating magnet, 3
...Focus spot, 4...Network section, 5a
, 5b, 5c, 5d...Magnet, 6...Cathode ray tube, 7...Tightening band, 8...Electron gun, 10...
...Enlarged diameter section.

Claims (1)

[Scope of utility model registration request] It is the neck part of the deflection yoke with the horizontal deflection coil and the vertical deflection coil.
, a deflection yoke in which four magnets for correcting focus distortion are arranged facing each other at positions corresponding to the Y axis or the diagonal axis.