Disclosed is a device for extracting depth information using infrared light which can be
provided at low cost in such a way to apply a nonlinear crystal and a photonic crystal to a
depth camera and comprises infrared light emission unit which emits a first infrared light
toward a subject; a wavelength conversion unit which concerts the first infrared light
reflected from the subject into a second infrared light having a wavelength shorter than the
wavelength of the first infrared light; and depth information extraction unit which detects the …