A see-through holographic head-mounted display with the large viewing angle

- A compact holographic head-mounted display system is proposed.
- The field of view is 62 degrees, three times of previous reported systems.
- Diverging light is used as the reference wave to expand the field of view.
- A project-type lens with large NA is designed to adapt the system.

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.