| 摘要 |
PROBLEM TO BE SOLVED: To provide an artificial magnetic field generation device which forms an identical artificial magnetic field to natural magnetic field as magnetic field formed in a diagonal direction of a cathode ray tube in addition to mag netic field of tube axis and right and left directions and reappears proper beam landing of the cathode ray tube to manufacture a stable quality of the cathode ray tube. SOLUTION: This device comprises pairs of compensation coils 11a, 11b, 12a, 12b, 13a, and 13b for generating artificial magnetic fields of tube axis and right and left directions of a cathode ray tube installed to a hexahedron shaped frame body 2, pairs of diagonal compensation coils 21a, 21b, 22a, and 22b for generating artificial magnetic fields opposing to diagonal corners of the frame body, and power means 3 for supplying the magnetic field generation current to the pairs of the compensation coils 11a, 11b, 12a, 12b, 13a, and 13b of tube axis and right and left directions and the pairs of the diagonal compensation coils 21a, 21b, 22a, and 22b of diagonal corners, respectively.
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