| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress rotation around an optical axis in an image blur correction device capable of driving a movable member in two directions substantially orthogonal to the optical axis.SOLUTION: An image blur correction device 100 includes a movable unit 102 holding a correction lens 101, a rotation-preventing plate 103 supporting the movable unit 102 so that the movable unit 102 can be rotated around a first rotation axis (P axis) orthogonal to an optical axis, and a fixing bottom plate 104 supporting the rotation-preventing plate 103 so that the rotation-preventing plate 103 can be rotated around a second rotation axis (Y axis) orthogonal to an optical axis. The first rotation axis and the second rotation axis cross each other at a point O on the optical axis of the correction lens 101. An urging spring 108 urges the movable unit 102 and the fixing bottom plate 104 in such a direction that they are brought close to each other. A first rolling ball 105 is arranged on a first virtual spherical surface S1 between the movable unit 102 and the rotation-preventing plate 103, and a second rolling ball 106 is arranged on a second virtual spherical surface S2 between the rotation-preventing plate 103 and the fixing bottom plate 104.</p> |
