Patent ID: 7477840

Claim:
An image stabilizer including at least one guide device which guides an image-stabilizing optical element of an optical system in a guide direction orthogonal to an optical axis and an image shake counteracting driving device which moves said image-stabilizing optical element in said guide direction so as to counteract image shake in accordance with a direction and a magnitude of vibration applied to said optical system, said image shake counteracting driving device comprising: a drive source; a first moving element moved in said guide direction by said drive source; a second moving element capable of transferring a moving force of said first moving element to a holder which holds said image-stabilizing optical element when said second moving element is moved in said guide direction by a movement of said first moving element; and a mutual guiding device which couples said first moving element and said second moving element in a manner to allow said first moving element and said second moving element to move relative to each other in said guide direction, wherein said mutual guiding device comprises: at least two first slidable portions provided at two different positions in a direction orthogonal to said guide direction, respectively; and at least one second slidable portion provided at a position different from the positions of said two first slidable portions in said guide direction.