A camera module includes: an image sensor including multiple photosensitive pixels; a diffraction structure covering a part of the multiple photosensitive pixels and configured to disperse incident rays irradiating to the part of the multiple photosensitive pixels into diffraction rays with different phases incident to one or more of the part of the multiple photosensitive pixels; and a signal processor acquiring a first sensing signal corresponding to a photosensitive pixel that does not receive the diffraction rays for generating a 2D image, and acquiring a second sensing signal corresponding to the diffraction rays for generating 3D information.