Moiré-free and high-resolution light field 3D display based on random parallax barrier

Abstract Flat-panel three-dimensional (3D) displays, which rely on light-control elements (such as lenticular sheets or parallax barriers) to redirect pixels and reconstruct 3D light fields, often suffer from display artifacts like moiré, crosstalk, and ratio imbalances due to the periodic optical structure. To address these issues, we propose a novel method to randomize the light-control elements, effectively mitigating moiré without increasing crosstalk. We also introduce an image synthesis approach for the randomized parallax barrier and develop an optical model to simulate and analyze the moiré effect. Additionally, we incorporate a liquid crystal display panel as the parallax barrier, combined with time-multiplexing of the backlight, which further reduces moiré and enables seamless switching between 2D and 3D modes. An 8.9 inch, 11-view 3D display prototype was constructed to demonstrate the effectiveness of the proposed method, showing reduced moiré, more uniform color, and enhanced image quality. This approach offers a significant advancement in reducing visual artifacts and improving the overall experience of multi-view 3D displays, facilitating the broader adoption of 3D display technologies for various applications, including entertainment, virtual reality, and medical imaging.