3d image acquisition apparatus and method of obtaining color and depth images simultaneously

Disclosed is a device for obtaining a three-dimensional (3D) image having a compact structure and improving speed to photograph the 3D image by generating a color image and a depth image in one photographing operation at the same time. The disclosed device for obtaining a 3D image includes a light source radiating light to a subject; a lens unit having four or more object lenses; an image sensor including four or more sensing areas individually generating images by collecting the light focused from each object lens; and three or more light shutters individually facing three or more objet lenses among the four object lenses and modulating the radiated light at a predetermined gain waveform. [Reference numerals] (103) Control unit; (104) Display