An optical image stabilizer for use in a camera lens assembly includes: a main frame including a main circuit board; a driving frame installed so as to move on the main frame in at least one direction; a camera device including a sub-circuit board, the camera device being mounted on the driving frame; and a circuit connection for electrically connecting the main circuit board to the sub-circuit board, wherein the circuit connection includes both of its ends coupled to the main circuit board and the sub-circuit board, respectively, and a plurality of lead wires constructed so as to be moved separately with respect to the main circuit board and the sub-circuit board.