Image Switching Methods for an Arc 3D Display Using Projectors and Its Optimal Pixel Structure

We proposed new methods of switching 3D images using projectors for moving images on an arc 3D display. An arc 3D display is a 3D display method that uses directional scattering of light generated by arc-shaped scratches on a substrate, but rewriting the displayed 3D images is difficult by conventional arc 3D displays. In this study, we proposed a method of switching the 3D images by selectively illuminating the arc-shaped scratches using a projector. In order to present arbitrary 3D images, we also proposed a method of displaying multiple depths by arranging the arc-shaped scratches in a grid pattern and illuminating them at different angles using multiple projectors. Furthermore, we proposed a method to avoid cross points of arc-shaped scratches by using Fresnel-type scratches, and proposed an optimal pixel arrangement for this method, and confirmed its effectiveness.