Affiliation:
1. Seoul National University
Abstract
We introduce a novel, to the best of our knowledge, method to increase the bandwidth in holographic displays. Here, multi-angle illumination using multiple laser diodes (LDs) is adopted to expand the limited diffraction angle of the spatial light modulator (SLM). To solve the problem of signal repetitions caused by sharing the same SLM pattern, we use a random binary mask (BM). We demonstrate via simulations and experiments that our method effectively increases the bandwidth with sufficient image quality. Furthermore, the speckle noise, a critical issue of the holographic display that decreases the contrast and is potentially harmful to eyes, is reduced by the advantage of incoherent summation in the reconstruction plane. We believe that this method is a practical approach that can expand the bandwidth of the holographic display by alleviating the bottleneck of hardware limitations.
Funder
Institute of Information and Communications Technology Planning and Evaluation (IITP) Grant funded by the Korea Government
Subject
Atomic and Molecular Physics, and Optics
Cited by
5 articles.
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1. Multi-color Holograms Improve Brightness in Holographic Displays;SIGGRAPH Asia 2023 Conference Papers;2023-12-10
2. Multisource Holography;ACM Transactions on Graphics;2023-12-05
3. Different strategies for down-sampling computer-generated holograms;Holography, Diffractive Optics, and Applications XIII;2023-11-27
4. Stochastic Light Field Holography;2023 IEEE International Conference on Computational Photography (ICCP);2023-07-28
5. Speckle-reduced Holography Using Time-Multiplexed Mask Optimization;Optica Imaging Congress (3D, COSI, DH, FLatOptics, IS, pcAOP);2023