| 摘要 |
An optical member is provided, in front of an image sensor to convert an optical image of an object into an electric signal, and on a photographing optical axis. The optical member is vibrated, thereby foreign substances attached to the optical member are removed. Further, a frame member is held between the optical member and the image sensor. In the frame member, a first pair of opposing sides are brought into contact with the optical member at nodes of vibration of the optical member. The thickness of a second pair of opposing sides in a direction of the photographing optical axis is thicker than that of the first pair of opposing sides. |
