6‐1: Multi‐dimensional Convertible Optical See‐through Head‐mounted Display Using Multiplexed Holographic Optical Element

We propose a multi‐dimensional convertible optical see‐through head‐mounted (OST‐HMD) display system based on angle multiplexing. The system is mainly composed of multiplexed holographic optical elements (MHOEs), collimators and projectors. Depending on the angle of the incident light, the MHOE can perform different functions, enabling 2D/3D convertible and 2D/3D mixed augmented reality displays. The system is simple in structure, suitable for various use scenarios, and expands the application range of OST‐HMD.