Numerical study of color holographic display from single computer-generated cylindrical hologram by radial-division method

Chang, Chenliang; Qi, Yijun; Xia, Jun; Chen, Yuan; Nie, Shouping

doi:10.1016/j.optcom.2018.09.021

Optics Communications

2019

DOI: 10.1016/j.optcom.2018.09.021

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Numerical study of color holographic display from single computer-generated cylindrical hologram by radial-division method

Chenliang Chang

Yijun Qi

Jun Xia

et al.

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Cited by 3 publications

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Large field-of-view holographic display by gapless splicing of multisegment cylindrical holograms

Wang

et al. 2021

Appl. Opt.

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A holographic three-dimensional (3D) display is a recognized and ideal 3D display technology. In the field of holographic research, cylindrical holography with the merit of 360° field of view (FOV) has recently become a hot issue, as it naturally solves the problem of limited FOV in planar holography. The recently proposed approximate phase compensation (APC) method successfully obtains larger FOV and fast generation of segment cylindrical hologram (SCH) in the visible light band. However, the FOV of SCH remains limited due to its intrinsic limitations, and, to our best knowledge, the issue has not been effectively addressed. In this paper, the restricted conditions are first analyzed for the generation of SCH by the APC method. Then, an FOV expansion method is proposed for realizing a large FOV holographic display by gapless splicing of multi-SCH. The proposed method can successfully obtain larger FOV cylindrical holograms and effectively eliminate the splicing gaps; its effectiveness is verified by the results of numerical simulation and optical experiments. Therefore, the proposed method can effectively solve the FOV limitation problem of the APC method for the generation of SCH in the visible band, realize a large FOV 3D display, and provide a useful reference for holographic 3D display.

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Large field-of-view holographic display by gapless splicing of multisegment cylindrical holograms

Wang

et al. 2021

Appl. Opt.

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Fast method for calculating a curved hologram in a holographic display

Kang¹,

Liu²,

Pi³

et al. 2020

Opt. Express

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A curved hologram can increase the view angle in a holographic display. The huge data processing and curved computer-generated hologram (CCGH) computation time is still a challenge for real-time display. Here, we propose two fast methods to accelerate the computation. The first one is a diffraction compensation (DC) method where the diffraction calculation is from the wave-front recording plane (WRP) to a CCGH. The other is an approximate compensation (AC) method that adds a phase difference distribution to the WRP to obtain the CCGH. Numerical simulations and optical experiments are performed, which demonstrate that the two methods are feasible and the computation time is dramatically reduced. The AC method can further reduce time significantly compared with the DC method. And the image quality for proposed methods is similar. It is expected that these fast methods can be combined with curved display screen and flexible display materials in the future.

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Curved hologram generation method for speckle noise suppression based on the stochastic gradient descent algorithm

Wang

et al. 2021

Opt. Express

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In this paper, a curved hologram generation method with suppressed speckle noise is proposed. In the process of generating the curved hologram, the angle spectrum method is used to calculate the 3D object in layers. By analyzing the loss function relationship between the diffraction image of the curved hologram and the target light field, the loss function is calculated. The phase of the hologram is updated based on the stochastic gradient descent algorithm, thereby obtaining the optimal phase distribution of the curved hologram. When the curved hologram is reproduced at different bending center angles, the reconstructed image of the corresponding angle can be seen. The proposed method has obvious advantages compared with the error diffusion method and Fresnel diffraction algorithm. The feasibility of the proposed method is verified by the experiments.

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Numerical study of color holographic display from single computer-generated cylindrical hologram by radial-division method

Cited by 3 publications

References 22 publications

Large field-of-view holographic display by gapless splicing of multisegment cylindrical holograms

Large field-of-view holographic display by gapless splicing of multisegment cylindrical holograms

Fast method for calculating a curved hologram in a holographic display

Curved hologram generation method for speckle noise suppression based on the stochastic gradient descent algorithm

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