| 摘要 |
A lens driving unit includes a lens holder accommodating a lens or a group of lenses. A coil is disposed on a surface of the lens holder. The lens driving unit is provided with a magnet disposed at a position spaced from the coil by a predetermined distance to move the lens holder along an optical axis according to current flowing in the coil. The lens driving unit is further provided with a guide member guiding movement of the lens holder along the optical axis. Further, a magnetic member is disposed at the lens holder to fix a position of the lens holder by magnetic attraction force exerted by the magnet when no current flows in the coil. The lens driving unit can achieve downsizing, improved resistance to impact, stabilized lens attitude, and reduced power consumption when an auto-focus function is performed.
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