Autostereoscopic three-dimensional display by combining a single spatial light modulator and a zero-order nulled grating
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In this paper, an autostereoscopic three-dimensional (3D) display system based on synthetic hologram reconstruction is proposed and implemented. The system uses a single phase-only spatial light modulator to load the synthetic hologram of the left and right stereo images, and the parallax angle between two reconstructed stereo images is enlarged by a grating to meet the split angle requirement of normal stereoscopic vision. To realize the crosstalk-free autostereoscopic 3D display with high light utilization efficiency, the groove parameters of the grating are specifically designed by the rigorous coupled-wave theory for suppressing the zero-order diffraction, and then the zero-order nulled grating is fabricated by the holographic lithography and the ion beam etching. Furthermore, the diffraction efficiency of the fabricated grating is measured under the illumination of a laser beam with a wavelength of 532 nm. Finally, the experimental verification system for the proposed autostereoscopic 3D display is presented. The experimental results prove that the proposed system is able to generate stereoscopic 3D images with good performances.
KeywordsThree-dimensional display Holographic display Spatial light modulator Diffraction grating Rigorous coupled-wave theory
This work is supported by the National Natural Science Foundation of China (NSFC) (Grant No. 51405317), Natural Science Foundation of Jiangsu Province (Grant No. BK20140358), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
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