| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical head device capable of moving an objective lens to a predetermined position even when a part of a driving coil is included in a neutral area (n) near a magnetization boundary regarding the optical head device of an optical disk device capable of optically reading/writing information by projecting an optical spot to the information recording surface of an optical recording medium. SOLUTION: Two magnets 50a and 50b are arranged by being divided in the tangential direction of an optical disk around an objective lens 10, coil units 60a and 60b for generating driving forces are installed in a lens holder 20 oppositely to the magnets 50a and 50b to form two driving force generation sections, and the magnets 50a and 50b and the coil units 60a and 60b are constituted so that driving forces other than a tracking driving force generated during tracking movement and moment conflict with each other at the two driving force generation sections. COPYRIGHT: (C)2004,JPO
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