Resolution enhancement in retro-reflector based on aerial imaging using micro aperture arrays

Jiahua Chen; Jinqiao Hou; Yangui Zhou; Min Jiang; Yongyao Li; Hexiang He

doi:10.1117/12.3007189

18 December 2023 Resolution enhancement in retro-reflector based on aerial imaging using micro aperture arrays

Jiahua Chen, Jinqiao Hou, Yangui Zhou, Min Jiang, Yongyao Li, Hexiang He

Proceedings Volume 12962, AOPC 2023: Optical Spectroscopy and Imaging; and Atmospheric and Environmental Optics; 1296208 (2023) https://doi.org/10.1117/12.3007189
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

For a floating display system using a prism or bread type retro-reflector, non-retro-reflected light is the key causes of the deterioration in image resolution. In the present study, a micro aperture array (pinhole array) is used to enhance image resolution of aerial imaging display based on prism and bread retro-reflector. The effects of different micro aperture parameters on the divergence angle and stray light of the retro-reflector are experimentally studied, and the modulation of the point spread function of different retro-reflectors is also explored in detail. The experimental results show that by properly arranging the micro aperture array, the divergence angle of the retro-reflective light can be effectively reduced; Moreover, the full width at half maxima of the point spread function of the retro reflector has been effectively narrowed. Finally, after the modulation of micro aperture array, the imaging resolution can be increased by 119% compared to the original one. The proposed micro array is low cost, easy processing and flexible when it is applied to retro-reflector based aerial imaging system to provide high image quality.

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

Citation Download Citation

Jiahua Chen, Jinqiao Hou, Yangui Zhou, Min Jiang, Yongyao Li, and Hexiang He "Resolution enhancement in retro-reflector based on aerial imaging using micro aperture arrays", Proc. SPIE 12962, AOPC 2023: Optical Spectroscopy and Imaging; and Atmospheric and Environmental Optics, 1296208 (18 December 2023); https://doi.org/10.1117/12.3007189

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