Abstract: An auto stereo display system for subway tunnel is disclosed. When a train is traveling through the tunnel at high speed, passengers can see stereo images outside the window by the system. The system is composed of LED light columns that vertically aligned at equal distance on the tunnel wall. Each LED light column is composed of multiple columns of LEDs and slit gratings. When the LEDs are changing with the changing instant speed of multi viewing angle image pixel array and the train, the passengers can see stereo image without glasses. The display system is specially applicable for business advertisement and nonprofit propagation in subway tunnel.

Abstract: The system includes a control host computer, a switching apparatus, a grating panel and a plane panel. The control host computer transmits the switching signal to the bare eye stereoscopic display status or to the transparent status to the switching apparatus, and according to the former switching signal, the switching apparatus transmits the square wave signal and the bare eye stereoscopic video signal to the grating panel and plane panel respectively, and according to the latter switching signal, the switching apparatus does not transmit the square wave signal to the grating panel, but transmits the 2D video signal to the plane panel. The grating panel forms the slit grating fringe according to the square wave signal and is transparent without the square wave signal. The stereoscopic video information indicated by the bare eye stereoscopic video signal is displayed by the plane panel cooperating with the slit grating fringe.

Abstract: An auto stereo display system for subway tunnel is disclosed. When a train is traveling through the tunnel at high speed, passengers can see stereo images outside the window by the system. The system is composed of LED light columns that vertically aligned at equal distance on the tunnel wall. Each LED light column is composed of multiple columns of LEDs and slit gratings. When the LEDs are changing with the changing instant speed of multi viewing angle image pixel array and the train, the passengers can see stereo image without glasses. The display system is specially applicable for business advertisement and nonprofit propagation in subway tunnel.

Abstract: A naked-eye 3D TV wall is disclosed, which is composed of a full-color light-emitting diode (LED) display array and a slit grating (or a cylinder lens grating). The grating is placed in front of and parallel to the array, and a distance is made between the grating and the array. The grating direction of the array is provided as an oblique angle. A red, green and blue color LED tube are packed into one tube to make a full-color LED tube to emit full-color light, and the full-color LED tube is the element unit of the array. When a multi-view image is interlaced and displayed on the array, the resolution loss is shared in the horizontal and vertical directions. A 3D image will be watched on the wall without wearing special glasses.

Abstract: The system includes a control host computer, a switching apparatus, a grating panel and a plane panel. The control host computer transmits the switching signal to the bare eye stereoscopic display status or to the transparent status to the switching apparatus, and according to the former switching signal, the switching apparatus transmits the square wave signal and the bare eye stereoscopic video signal to the grating panel and plane panel respectively, and according to the latter switching signal, the switching apparatus does not transmit the square wave signal to the grating panel, but transmits the 2D video signal to the plane panel. The grating panel forms the slit grating fringe according to the square wave signal and is transparent without the square wave signal. The stereoscopic video information indicated by the bare eye stereoscopic video signal is displayed by the plane panel cooperating with the slit grating fringe.