Holographic optical elements for head-up displays and near-eye displays

Various technologies to realize the augmented reality (AR) devices have been proposed. Holographic optical element (HOE) is among the most appealing optical components for the optical combiner of AR devices. With the compact size and bendable material, HOE can be applied to AR systems with various form factors. Since HOE has high angular selectivity, the light from the real scene remains nearly intact, making HOE the most promising technology for see-through AR displays. However, several issues of HOE still remain to be resolved, such as narrow field of view or eye box, and severe aberration. In this invited paper, we present the basic characteristics and issues of HOE and introduce how we can resolve the issues.