Expansion of Image Space in Enhanced-NA Fresnel Holographic Display

The enhanced-NA Fresnel hologram reconstructs a holographic image at viewing angle larger than the diffraction of pixel. space is limited by bandwidth digital hologram. In this study, we investigate property formation in extended beyond zone. A numerical simulation, using phase hologram, carried out to observe an extension and effect on changes angular field view. synthesized restricting view range angle, can reconstruct uniform without high-order noises within primary zone, which well confirmed optical experiments. On other hand, overlapping images inevitable, when depends aperture. principle, replica both planes would be removed during optimization algorithm considering suitable constraints. We discuss development method for expanding space, while maintaining image.