| 摘要 |
PROBLEM TO BE SOLVED: To constitute a supporting arm of a suspension member so that pitching resonance and yawing resonance of a lens actuator generated in the specific high period are damped effectively, while trouble for static displacement can be dissolved. SOLUTION: A supporting arm 6 fixing one end of a suspension member 3 is arranged at the back of a suspension holder 5 fixed to a yoke base 4, while the supporting arm 6 is formed so that the followup ability for displacement in the direction of jitter of the suspension member 3 is improved. An objective lens 2 is displaced and an irradiation position of a beam spot for the optical disk is adjusted by servo-controlling a lens holder 1 held at the other end of the suspension member 3 by an electromagnetic drive system. Viscoelastic materials G1/G2 are filled in a deformation permission part 6a of the supporting arm 6. COPYRIGHT: (C)2005,JPO&NCIPI
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