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专利名称：Color cathode-ray tube and color cathode-ray tube apparatus
发明人：Iwasaki, Katsuyo申请号：EP00120903.0申请日：20000926公开号：EP1100108A3公开日：20050119
专利附图：
摘要：A color cathode-ray tube including an in-line electron gun and a color cathode-ray tube apparatus including the same are provided. At an end, on a screen side, of theelectron gun, two pairs of members 11, 11', 12, and 12' for generating a magnetic field
are placed above and below side beams of three electron beams so as to sandwich them,respectively. Between each of the two pairs of members for generating a magnetic field,a localized barrel magnetic field is formed to vary cross-sectional shapes of the sidebeams positioned on both sides of a center beam so that the cross-sectional shape ofone of the side beams is horizontally or vertically elongated to a higher degree than thatto which the cross-sectional shape of the other of the side beams is. Magnetic fields forreverse correction of spot distortions of the side beams are generated and therefore thesymmetry in the spot distortions of the side beams asymmetric with each other isimproved, thus improving focus quality.
申请人：MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
地址：1006, Oaza Kadoma Kadoma-shi, Osaka JP
国籍：JP
代理机构：Hafner, Dieter, Dr.rer.nat., Dipl.-Phys.
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