| 摘要 |
PURPOSE:To reduce the number of parts in a correcting device by arranging a york on a position parallel with the magnetizing direction of a magnet and generating a magnetic path also in the vertical direction to the magnetized direction to drive coils in both focusing and tracking directions. CONSTITUTION:A magnetic circuit is constituted of two magnets 15, 16 and four yorks 22-25 and a lens holder having tracking coils 17, 18 and focusing coils 19, 20 on its face opposed to these magnets 15, 16 is inserted while being supported by a rubber spring 21. In said constitution, the two magnets 15, 16 are the same shape and yorks 12 are arranged in positions parallel with the magnetizing direction to generate magnetic paths 13, 14 also in the vertical direction to the magnetizing direction and to drive the coils 19, 20 and 17, 18 also in both the focusing and tracking directions. Thus, the two magnetic paths 13, 14 vertical to each other are generated around the magnet 11.
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