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    • 4. 发明公开
    • Compensating device for CRT raster distortion
    • KondensierungsvorrichtungfürKathodenstrahlröhre-Rasterverzerrungen
    • EP0797235A2
    • 1997-09-24
    • EP97104650.3
    • 1997-03-19
    • MATSUSHITA ELECTRONICS CORPORATION
    • Ishii, Akitsugu
    • H01J29/64H01J29/56
    • H01J29/701H01J2229/5687
    • A compensating device for raster distortion is provided, which can compensate a raster distortion, preferably including an inner pincushion distortion, by a simple and inexpensive configuration. The compensating device comprises an electromagnet (10) and a pair of permanent magnets (14). The electromagnet (10) is disposed outside of a deflection yoke and at a center portion of a side of a beam-deflection area (31), and generates magnetic poles in the direction along the side. The pair of permanent magnets (14) are disposed beyond the ends of the side, and generate magnetic poles aligned with the magnetic poles of the electromagnet (10).
    • 提供了用于光栅失真的补偿装置,其可以通过简单且便宜的配置来补偿优选地包括内枕形失真的光栅失真。 补偿装置包括电磁体(10)和一对永磁体(14)。 电磁体(10)设置在偏转线圈的外侧和光束偏转区域(31)的一侧的中心部分处,并沿着侧面方向产生磁极。 一对永磁体(14)设置在侧面的端部之外,并且产生与电磁体(10)的磁极对准的磁极。