| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical device where a lens module is fixed and released with simple structure so as to decrease power consumption and volume and increase vibration-proof and shock resistance effects. SOLUTION: In the optical device, a drive moving device includes the lens module and a drive coil. The drive coil surrounds the lens module and provides a central axis parallel to an optical axis. A drive stator includes a housing, a magnetic element and a yoke. The lens module is movably disposed in the housing. The magnetic element surrounds the drive coil and includes an opening. The yoke interacts with the magnetic element, generating a magnetic field. The magnetic element, yoke and drive coil interact to move the drive moving element parallel to the optical axis. A brake coil is disposed in the opening of the magnetic element. A braking resilient element is connected between the drive stator and the brake coil and disposed in the opening. The brake coil interacts with the magnetic element, yoke and braking resilient element and detachably attaches the drive moving element. COPYRIGHT: (C)2008,JPO&INPIT
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