| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the size of a camera module, to provide high cost benefit and high productivity, and to provide a necessary and sufficient thrust for an autofocus function or zooming function. <P>SOLUTION: This lens driver includes a leaf spring 28 movably provided between a lens 21a and a lens housing 24a and holding the lens 21a in the lens housing 24a in the optical axis direction; a coil 31 for moving the lens 21a in the optical axis direction; a magnet 32 spaced apart from the coil 31 and moving the lens 21a in the optical axis direction; and a yoke 33, fixed to a magnet 32 and having an L-shaped cross-section of the optical axis direction. The yoke 33 is disposed, in such a way that an L-shaped corner side 33a is located on the opposite side (for example, on a side closer to an imaging element 23) to the position of the lens 21a, where the reaction force of the leaf spring 28 resulting from the movement of the lens 21a is maximized. <P>COPYRIGHT: (C)2010,JPO&INPIT |
