High-performance 3D light field display based on distortion suppressed compound lens and pre-correction encoded image

Xinzhu Sang; Xudong Wen; Xin Gao; Xunbo Yu

doi:10.1117/12.2688607

28 November 2023 High-performance 3D light field display based on distortion suppressed compound lens and pre-correction encoded image

Xinzhu Sang, Xudong Wen, Xin Gao, Xunbo Yu

Author Affiliations +

Proceedings Volume 12765, Optical Design and Testing XIII; 1276507 (2023) https://doi.org/10.1117/12.2688607
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

For an advanced three-dimensional (3D) light field display, the 3D image information with correct spatial occlusion relation should be provided in a large viewing angle range. However, the optical distortion and the structural error are two key factors of the deterioration in image quality, which cause the serious deformation of 3D images, especially in large viewing angle. Here, the light path of spatial voxel is analyzed. The mathematical relationship between optical system parameters and spatial voxel positions is achieved. The aberration theory is used to analyze the optical distortion of single lenses. Due to the influence of optical distortion, the angle of the emitted light deviates from the ideal direction, which leads to the deviation of spatial voxel positions. The compound lens with aperture-stop is designed to suppress the optical distortion. The optical performance of optimized compound lens is evaluated. In order to further suppress the residual optical distortion and the structural error, a pre-correction method with the detection of optical path error is proposed. The correspondence between the pixel of display source and the spatial voxel is obtained. Based on the designed compound lens and pre-correction encoded image, a 3D light field display system is constructed. Experimental results demonstrates that the proposed method suppresses the optical distortion and the structural error. An undeformed 3D image with the viewing angle above 100 degrees can be achieved, which can find potential applications in biomedical imaging and visualization to enhance medical analysis and diagnosis.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Xinzhu Sang, Xudong Wen, Xin Gao, and Xunbo Yu "High-performance 3D light field display based on distortion suppressed compound lens and pre-correction encoded image", Proc. SPIE 12765, Optical Design and Testing XIII, 1276507 (28 November 2023); https://doi.org/10.1117/12.2688607

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KEYWORDS

Distortion

3D displays

3D image processing

Voxels

Displays

3D image reconstruction

LCDs

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