| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens driving device, an autofocus camera, and a cellular phone with a camera, which can correct movement to the optical axis direction of a lens and inclination of the optical axis, reducing the size in the optical axis direction, and reducing a current to be sent into a coil. SOLUTION: A circular main yoke 3 provided along the outer circumference of a lens support 5 forms an L-shaped cross section by an outer peripheral wall 3a and a radial direction wall 3b, and a cylindrical auxiliary yoke 24 provided on the outer peripheral surface of the lens support 5, each one end of which on the front and rear is faced to the radial direction wall 3b, forms a U-shaped cross section by the main yoke 3 and the auxiliary yoke 24. Circular coils 19a-19d form a rectangular ring in side view, and a front-side side part 21 of the rectangular circular coils 19a-19d is interposed between a magnet 19 and the auxiliary yoke 24. When moving the lens support 5 in the optical axis direction, a control part 25 sends each current having an equal current value A into each circular coil 19a-19d, and when correcting inclination of the optical axis of the lens, the control part 25 differentiates to A+B, the current value of the current to be sent to the corresponding circular coil. COPYRIGHT: (C)2011,JPO&INPIT
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