Patent ID: 7800847
Filing Date: 2010-09-21
Classification: G02B,G03B,H04N

Abstract:
1. An optical element module comprising: an optical element; and a plurality of actuator elements each having an ion conductive polymer film in an oblong strip shape and electrodes disposed on both sides of said ion conductive polymer film, said actuator elements as a whole bending in a direction of thickness by applying a voltage between said electrodes; said optical element being moved on a plane perpendicular to an optical axis of said optical element by the bending of said actuator elements; wherein said plurality of actuator elements are arranged such that a direction of width of the oblong strip shape of said plurality of actuator elements is a direction of said optical axis and such that a direction of thickness of said plurality of actuator elements is perpendicular to said optical axis , another end part in a direction of length of said plurality of actuator elements is fixed such that one end part in the direction of length of said plurality of actuator elements is displaced by said bending to move said optical element, and at least one actuator element A of said plurality of actuator elements is disposed such that a direction in which said one end part of the actuator element A is displaced by said bending is orthogonal to a direction in which said one end part of another actuator element B is displaced by the bending, wherein the optical element module further includes: an inner frame for containing said optical element such that said optical element is movable in an X-direction; and an outer frame for containing said inner frame together with the optical element such that said inner frame together with the optical element is movable in a Y-direction; wherein said plurality of actuator elements include two actuator elements A whose principal planes are opposed to each other with said optical element interposed between said two actuator elements A in the X-direction, said one end part of each of said two actuator elements A being in contact with said optical element, and said other end part of each of said two actuator elements A being fixed to said inner frame, and two actuator elements B whose principal planes are opposed to each other with said inner frame interposed between said two actuator elements B in the Y-direction, said one end part of each of said two actuator elements B being in contact with said inner frame, and said other end part of each of said two actuator elements B being fixed to said outer frame, said optical element is moved in one direction of the X-direction by pushing due to said bending of one actuator element A of said two actuator elements A, and said inner frame and said optical element are moved in one direction of the Y-direction by pushing due to said bending of one actuator element B of said two actuator elements B.