Abstract

Creating a spherical full-parallax light-field display is challenging because it is difficult to curve conventional structures, although the spherical surface is suitable for displaying 3D images with a wide viewing area. Here, we present a spherical full-parallax light-field display that consists of a specially designed disco-ball-like spherical reflective screen (a ball mirror) and a high-speed projector. The ball mirror uniaxially rotates to change the ray direction, and the synchronized projector controls the ray color. By speeding up the rotation and employing time multiplexing, the system acts as a full-parallax light-field display. We designed the system mathematically and analyzed the image quality through computer simulations. In addition, the prototype successfully displays colored 3D images and has smooth parallax in both vertical and horizontal directions.

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