For 3D imaging till today we were using multiple lenses, but now an Italian company has found a key to use a single lens. They are using pulsed laser energy to give three dimensional images.
By using a CMOS sensor to collect the light while returning, a camera can see light pulses which reflect from an object which is like to sonar. The image is not a photo quality or a movie image but can be used for gaming. Details are still not clear and sketchy but it is a just a starting and we need to wait and see for further news.
Image Credit: slashgear.com