研究目的
To develop a holographic display system that can reconstruct a large hologram in free space for a 3D video service, providing an observer with a hologram with a wide angle and large screen under a limited space-bandwidth product.
研究成果
The developed holographic display system can reconstruct a large hologram in free space for a 3D video service, providing an observer with a hologram with a wide angle and large screen under a limited space-bandwidth product. Future work includes developing a tabletop-style holographic display to support more than four observers and improving the quality of the reconstructed image.
研究不足
Only one user can utilize the system at a time due to the limited performance of the eye tracking system and input optical system. The aberration of the input and output optical systems results in the distortion of the image reconstructed from the hologram.
1：Experimental Design and Method Selection:
The system is designed to steer a narrow viewing window by changing the position of the light source according to the (x, y, z) axes. It uses two vertically placed LCD panels and a beam splitter to support the holographic stereogram.
2：Sample Selection and Data Sources:
The system uses a 22-inch LCD panel with 4 K resolution and a 125-μm pixel pitch as the SLM.
3：List of Experimental Equipment and Materials:
Includes SLMs, laser light sources, motorized stages, lens arrays, a beam splitter, and eye tracking cameras.
4：Experimental Procedures and Operational Workflow:
The system converges the wave fields of the hologram in the viewing window that is moved horizontally and vertically in the space of the viewing zone by shifting the point light sources.
5：Data Analysis Methods:
The position of the observer’s pupil is obtained to find the position for shifting the viewing window.
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