A novel solution for the large view angle holographic head-mounted display (HHMD) is presented. Divergent light is used for the hologram illumination to construct a large size three-dimensional object outside the display in a short distance. A designed project-type lens with large numerical aperture projects the object constructed by the hologram to its real location. The presented solution can realize a compact HHMD system with a large field of view. The basic principle and the structure of the system are described. An augmented reality (AR) prototype with the size of 50 mm×40 mm and the view angle above 60° is demonstrated.
Chen, Z., sang, X., Lin, Q., Li, J., Yu, X., Gao, X., … Xie, S. (2017). A see-through holographic head-mounted display with the large viewing angle. Optics Communications, 384, 125–129. https://doi.org/10.1016/j.optcom.2016.10.009