| 摘要 |
PROBLEM TO BE SOLVED: To provide an objective lens driving device capable of reducing a tilting of an objective lens generated when the device is driven without requiring strict accuracy of components or assembly or increasing the number of additional components. SOLUTION: A groove 61 (chucked portion) which makes chucking from outside of the device possible, is set up in permanent magnets 3a, 3b arranged in the objective lens driving device. By this arrangement, chucking of the permanent magnets 3a, 3b is performed surely utilizing a fixture and positional adjustment of the permanent magnets 3a, 3b can be performed in a final step of assembling for the objective lens driving device. As a result, the center of driving force and the center of supporting of the objective lens driving device can be in a state that they agree with each other, and the tilting of the objective lens can be reduced when the device is driven. COPYRIGHT: (C)2008,JPO&INPIT
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