Intermediate moving member of camera actuator and camera actuator including same

The invention discloses an intermediate moving member of a camera actuator and a camera actuator including the same. An intermediate movable member of a camera actuator according to one embodiment of the present invention includes at least two or more ball guide rail portions. Each ball guide rail part comprises a first direction ball guide rail and a second direction ball guide rail, wherein the first direction ball guide rail is formed by exposing a metal guide rail surface to the upper part of the middle movable piece; and the second direction ball guide rail is formed in a manner that a guide rail surface made of metal materials is exposed to the lower part of the middle movable piece. The first direction ball guide and the second direction ball guide are adjacent to each other while being separated so as not to overlap or overlap each other when viewed in the optical axis direction, and at least partially overlap each other when viewed in the first direction. Thus, when the camera actuator is configured