Abstract: An image transforming device enables 3-D auto-stereoscopic display of a two-dimensional projected image. Optical waveguides in the form of ribbons are used. A stack of ribbons at a receiving end receives the projected image. A horizontal and vertical ribbon arrangement at the other end of the ribbon forms a screen for display of a transformed 3D image. A spacer material at the output end separates the vertical positioning of each ribbon. A screen may be assembled from the output ends of multiple devices forms. The two-dimensional image may be projected in changing colors. When changing colors are projected, the device may further include two lens arrays: a static micro-lens array and a dynamic array of micro-lenses, which is capable of motion synchronized with the changing colors.