The invention discloses a 3D imaging device for a
mobile device. The 3D imaging device for the
mobile device comprises a shell, a three-dimensional
imaging lens set arranged in the shell, and a supporting frame which is arranged at the rear end of the shell in a sliding mode, wherein the two ends of the shell are open, lateral sidling grooves which are parallel to the open end faces of the shell are formed in the shell, the three-dimensional
imaging lens set comprises a
left eye lens set and a right
eye lens set, the left spectacle lens set and the right spectacle lens set are placed in the lateral sidling grooves in a sliding mode through lens cylinders which are fixed to a frame of the left lens set and a frame of the
right lens set respectively, the supporting frame is used for fixing the
mobile device, a screen touching device used for touching the touch screen of the mobile device is arranged on the supporting frame, and when the mobile device is fixed to the supporting frame, the screen of the mobile device right faces the rear end opening of the shell. The mobile device is fixed to the rear end of the shell through the supporting frame, the three-dimensional
imaging lens set is installed on the portion, close to eye lenses, of the front end of the shell, a forward
virtual image in a long distance can be seen by people after imaging is conducted on an image on the screen of the mobile device through the left lens set and the
right lens set, and then amplification and 3D imaging of the image on the screen of the mobile device are achieved.