| 摘要 |
PROBLEM TO BE SOLVED: To propose an optical head apparatus in which drive sensitivity for an objective lens can be improved even if spacial restriction exists. SOLUTION: In an objective lens drive apparatus 10 of the optical head apparatus 1, effective sides of a focusing drive coil 21, a tilt drive coil 23, and a tracking drive coil 22 are arranged between a first outside magnet 26 and a first inside magnet 28, and between a second outside magnet 27 and a second inside magnet 29. Also, an inside magnet holding part 254 of a yoke 25 is interposed between the first inside magnet 28 and the second inside magnet 29. COPYRIGHT: (C)2007,JPO&INPIT
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