Viewing window expansion in integral floating display using tilted side mirrors

We propose an expanding method for viewing window in the integral floating display with the tilted side mirrors. These additional mirrors make some rays change the propagation direction, and the reflected ray has large propagation angle compared with the conventional system. Because the maximum propagation angle of ray determines the viewing window size, the proposed system can enlarge the viewing window successfully. The change of ray density due to the side mirrors is analyzed and the elemental image set generation method using virtual lens array concept is also discussed. The experimental results are provided to verify the performance of the proposed system.