An auto focusing unit of a camera module of the present invention includes: a lens module constituted with at least one lens; a polymer formed with a transparent material and arranged on a light path of the lens module; a silicon frame installed on the upper side of the lens module; a glass membrane which is arranged on the upper side of the silicon frame and maintains contact state with the polymer; and an actuator which comprises a first and a second actuator installed on the position corresponding to the upper side and the lower side of the glass membrane respectively, and transforms the shape of the glass membrane.
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