As reported in Advanced Photonics Nexus, their method leverages a split Lohmann lens-based diffraction design, allowing fast synthesis of 3D holograms through a single-step backwards propagation calculation.By incorporating a specially created virtual digital phase modulation into the split Lohmann lens, their technique accomplishes extremely precise restoration of 3D scenes with exact depth perception.Full-color holographic near-eye display uses an eyepiece lens to magnify 3D images, which are then taped by changing the focus of the cam lens. Unlike standard techniques that suffer from computational traffic jams, the proposed technique guarantees consistent computation speed regardless of the depth sampling density, consequently making it possible for smooth combination into different applications needing immersive 3D visualization.To verify the effectiveness of their approach, the scientists conducted both simulations and experiments, demonstrating its capability to produce reasonable 3D holographic screens with accurate depth perception.Overall, the research study presents an appealing improvement in the field of computer-generated holography, offering a useful solution for creating immersive 3D visualizations without the computational constraints of standard techniques. It helps pave the method for the widespread adoption of holographic display screens in varied industries and applications.Reference: “Split Lohmann computer system holography: fast generation of 3D hologram in single-step diffraction estimation” by Chenliang Chang, Xian Ding, Di Wang, Zhizhou Ren, Bo Dai, Qi Wang, Songlin Zhuang and Dawei Zhang, 28 March 2024, Advanced Photonics Nexus.DOI: 10.1117/ 1.
