High-quality Color-animated CGH Using a Motor-driven Photomask

We propose a novel display system for a color-animated computer-generated hologram (CGH) with the world's highest level of image quality, screen size, and viewing angle. The conventional method uses a staticCGHand pattern illumination to achieve color-animated CGHwith large screens and wide viewing angles, but non-illuminated areas result in degraded image quality. Our system solves this problem by using a photomask with a motorized stage, which enables the projection of much finer patterns than with the conventional method. We demonstrated that our method achieves a significant quality improvement compared to the conventional method by developing a color animation prototype with 4 reconstructed images.