Optical element module and image pickup device

An image pickup device including an optical element module, the optical element module comprising:

• an optical element;
• and
• a plurality of actuator elements;
• wherein each of said actuator elements has an ion conductive polymer film in a shape of a long and narrow plate and electrodes arranged on both sides of said ion conductive polymer film, and a whole of said actuator element is bent in a direction of thickness by applying a voltage between said electrodes,
• the direction of the thickness of said plurality of actuator elements is a direction of an optical axis of said optical element, said plurality of actuator elements are arranged at equal intervals around the optical axis of said optical element on a plane perpendicular to the optical axis of said optical element (XY plane), and a displacement due to said bend of one end part in a direction of length of at least one actuator element acts on one of a side surface and a bottom surface of said optical element to effect one of tilting and movement in the direction of the optical axis of said optical, and
• wherein said optical element is tilted by driving said optical element module at a time of photographing to make hand movement correction.

An image pickup device including an optical element module, the optical element module comprising:

• an optical element;
• a plurality of actuator elements;
• wherein each of said actuator elements has an ion conductive polymer film in a shape of a long and narrow plate and electrodes arranged on both sides of said ion conductive polymer film, and a whole of said actuator element is bent in a direction of thickness by applying a voltage between said electrodes,
• the direction of the thickness of said plurality of actuator elements is a direction of an optical axis of said optical element, said plurality of actuator elements are arranged at equal intervals around the optical axis of said optical element on a plane perpendicular to the optical axis of said optical element (XY plane), and a displacement due to said bend of one end part in a direction of length of at least one actuator element acts on one of a side surface and a bottom surface of said optical element to effect one of tilting and movement in the direction of the optical axis of said optical element;
• and
• a fixing frame for housing said optical element and said plurality of actuator elements,
• wherein said plurality of actuator elements are four actuator elements in a form of an oblong strip, of the four actuator elements, two actuator elements are arranged in a point-symmetric relation to each other with respect to said optical axis with said optical element interposed between the two actuator elements in one direction (X-direction) on the XY plane, the other two actuator elements are arranged in a point-symmetric relation to each other with respect to said optical axis with said optical element interposed between the other two actuator elements in a direction (Y-direction) orthogonal to the X-direction, said one end part of each of the actuator elements is coupled to one of the bottom surface and the side surface of said optical element such that a displacement of the one end part can be transmitted to one of the bottom surface and the side surface of said optical element, and another end part of each of the actuator elements is fixed to the fixing frame of which optical element is one of a lens and a lens holder or a lens in an image pickup optical system, and
• wherein said optical element is moved in the direction of the optical axis by driving said optical element module to make one of focus adjustment and zoom adjustment.