| 摘要 |
PROBLEM TO BE SOLVED: To provide a variably focusing mirror driven by electromagnetic force for achieving functions of automatic focusing and optical zooming of a miniature camera module, and to provide an operating method of the mirror. SOLUTION: The mirror comprises a driving unit having a support and one or more permanent magnets attached to the support and a mirror unit having a coil, a reflective surface with a curvature changed by the magnitude and direction of a current flowing through the coil, and a thin film where the reflective surface is incorporated. The variably focusing mirror achieves functions of focusing or optical zooming by adjusting the radius of curvature of the reflective surface. Therefore, the mirror can remarkably decrease the volume of a camera module and can be used in various applications requiring a miniature camera module. COPYRIGHT: (C)2007,JPO&INPIT
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