Optical element driving device, camera module, and camera-mounted device

1 . An optical element driving device comprising:

a holding part configured to hold an optical element;

a housing part configured to house the holding part such that the holding part is movable in an optical path direction of the optical element;

a driving part including a piezoelectric element configured to drive the holding part;

an inductor configured to increase an input voltage to the piezoelectric element; and

a position sensor configured to acquire a relative position of the holding part and the housing part in the optical path direction by detecting a magnetic force of a magnet,

wherein, in regions defined by dividing the holding part and the housing part into equal quarters around an optical axis, the driving part and the position sensor are disposed in a same first region, and the inductor is disposed in a second region adjacent to the first region,

along half of a periphery of the housing part formed by the first and second regions, the driving part is disposed between the position sensor and the inductor.

2 . The optical element driving device according to claim 1 ,

wherein the housing part has a rectangular shape in plan view, and

wherein the position sensor and the inductor are disposed at respective different sides in the housing part.

3 . The optical element driving device according to claim 1 ,

wherein the driving part includes a first driving part and a second driving part, and

wherein the first driving part and the second driving part are disposed in respective diagonally opposite regions among the regions divided into the equal quarters.

4 . The optical element driving device according to claim 1 , further comprising a control element configured to control the piezoelectric element through the inductor,

wherein the control element is disposed in a region different from a region in which the inductor is disposed among the regions divided into the equal quarters.

5 . A camera module comprising:

the optical element driving device according to claim 1 ; and

an image capturing part configured to capture a subject image by using the optical element.

6 . A camera-mounted device that is an information device or a transport device, the camera-mounted device comprising:

the camera module according to claim 5 ; and

an image processing part configured to process image information obtained by the camera module.