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.
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Li et al. (2024) studied this question.
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