Patent ID: 8805176

Claim:
An auto-focus driving structure for installing a lens device having an optical axis, comprising: a main body; a lens retainer movably disposed in the main body; a movable frame movably disposed in the main body and configured beneath the lens retainer; a first driving unit including a coil and a first magnetic group, the coil configured on the periphery of the lens retainer, the first magnetic group disposed in the main body correspondingly configured to the coil, the lens retainer displaced relative to the main body and along the optical axis through the first driving unit; and a second driving unit including a second magnetic group and a coil circuit board, the second magnetic group disposed on the movable frame, the coil circuit board configured beneath the movable frame, the coil circuit board having a plurality of printed coils correspondingly configured to the second magnetic group, and the movable frame displaced relative to the main body along an X-axis direction and a Y-axis direction normal to the optical axis through the second driving unit.