Alleviating the Field of View and High Image Fidelity Trade-off in Holography: Multifunctional Tunable 3D Holographic Display

Three-dimensional (3D) holographic display has emerged as the most promising approach for next-generation visualization technologies. However, the inherent limitations of spatial light modulators (SLMs) in terms of pixel size and resolution impose fundamental trade-off between field of view (FOV) and high image fidelity. Conventional approaches struggle to simultaneously enhance both metrics. In this work, we present an innovative and practical solution that effectively alleviates this trade-off by intelligently redistributing the SLM’s pixel budget via spatial multiplexing. By implementing spatially multiplexed hologram generation combined with an optimized optical layout and phase compensation, we demonstrate a reconfigurable 3D holographic system that achieves, for the first time with a single SLM, an 8 times magnification and a 42° viewing angle. While the resolution of each individual subhologram is limited by the SLM’s pixels, our system orchestrates them to effectively expand the overall system’s capabilities beyond what is achievable with conventional single-hologram setups. The proposed method simplifies the design complexity and alleviates issues related to high-cost components by jointly operating on the hologram design and the display device. This research provides a viable pathway toward high-performance 3D holographic displays with large size and wide viewing angles, with promising implications for high-information-content applications in biomedical imaging, virtual reality, and interactive electronics.