Diffraction characteristics of digital micro-mirror device in holographic display

Xiaoyu Wang; Hao Zhang

doi:10.1117/12.2615606

22 July 2022 Diffraction characteristics of digital micro-mirror device in holographic display

Xiaoyu Wang, Hao Zhang

Proceedings Volume 12277, 2021 International Conference on Optical Instruments and Technology: Optical Systems, Optoelectronic Instruments, Novel Display, and Imaging Technology; 122770T (2022) https://doi.org/10.1117/12.2615606
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

Digital micro-mirror device (DMD) has considerable influences on the high quality computer-generated holographic display. We propose a DMD transmission model for analyzing the influences of the diffraction characteristics of DMD in this display process. The propagation of the hologram affected by the DMD modulation function is calculated based on the discrete Rayleigh-Sommerfeld diffraction integral. The results demonstrate that the diffraction characteristics of DMD do not essentially change the reconstructed wavefront of the original hologram, but cause the lateral offset of the reconstructed image. This offset can be compensated by changing the angle of the incident beam, and the image can be reconstructed in the correct position. Numerical simulations demonstrate the effectiveness of the proposed model, which provides theoretical support for DMD-based computer-generated holographic display.

Citation Download Citation

Xiaoyu Wang and Hao Zhang "Diffraction characteristics of digital micro-mirror device in holographic display", Proc. SPIE 12277, 2021 International Conference on Optical Instruments and Technology: Optical Systems, Optoelectronic Instruments, Novel Display, and Imaging Technology, 122770T (22 July 2022); https://doi.org/10.1117/12.2615606

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KEYWORDS

Digital micromirror devices

Diffraction

Micromirrors

Holograms

Modulation

3D image reconstruction

Holography

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