| 摘要 |
PROBLEM TO BE SOLVED: To prevent optical parts on a circuit board from vibrating by vibrations caused by an objective lens driving mechanism in an optical head device made to be thin by utilizing the circuit board as a mounting board for components. SOLUTION: In this optical device 1, even though respective optical parts 4, 6, 7 and 8 constituting its optical system are mounted directly on the circuit board 3, a wire suspension 13 and a yoke plate 14 being components for the objective lens driving mechanism 11 being a vibrations generation source are mounted on a device frame 5 made of resin, and the device frame 5 is laminated on the surface of the circuit board 3. Since vibrations generated by the driving mechanism 11 are absorbed by the device frame 5 made of resin having a damper function, the respective optical parts 4, 6, 7 and 8 mounted on the circuit board 3 can be surely prevented from vibrating, and the deterioration of an optical characteristics caused by the vibrations can be avoided. |
