| 摘要 |
PURPOSE: An optical pickup actuator is provided to eliminate rotation of an objective lens through identifying a force center and a gravity center of a bobbin, and to prevent the bobbin from being transformed through transferring a higher resonant frequency into a higher frequency. CONSTITUTION: An optical pickup actuator is formed by a bobbin(501) containing an objective lens while attaching coils around the objective lens, suspension wires for supporting the bobbin, a yoke containing magnets, and a frame for supporting the suspension wires. Herein, the bobbin contains a mass compensate material(502) for identifying a gravity center and a force center. Herein, the mass compensate material contains a U-shaped frame unit, and a rim unit integrally formed with the frame unit for surrounding the frame unit. |
