Design of reflective Fizeau optical synthetic aperture imaging system

Applied Optics and Photonics China Pub Date : 2023-12-18 DOI:10.1117/12.3007833

Wenmao Zhang, Jianfeng Yang, Yi-yi Zhao

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Abstract

In the development of astronomy, high spatial resolution imaging technology plays a crucial role in astronomical observations. The introduction of the optical synthetic aperture concept satisfies the demand for high spatial resolution imaging, gradually becoming a novel direction in the advancement of optical interferometry. This study focuses on the investigation of Fizeau-type synthetic aperture imaging system and presents the design and performance analysis of a system based on requirements. The Fizeau-type synthetic aperture imaging system designed in this paper adopts reflective structure. The system operates in the visible light band (400nm~700nm), with a full field of view angle of 0.3°, an entrance pupil diameter of 300mm, and a focal length of 3598 mm. The sub-telescopes adopt the structure of coaxial two-mirror telescope system. The optical delay line adopts a parallel mirror structure. The beam combiner adopts an off-axis three-mirror structure. The performance of each sub-system and the whole system is analyzed. The results demonstrate that the synthetic aperture imaging system enhances the spatial resolution compared with the single sub-aperture system.

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设计反射式菲佐光学合成孔径成像系统

在天文学的发展过程中，高空间分辨率成像技术在天文观测中起着至关重要的作用。光学合成孔径概念的引入满足了高空间分辨率成像的需求，逐渐成为光学干涉测量技术发展的新方向。本研究重点研究了菲佐型合成孔径成像系统，并根据要求对系统进行了设计和性能分析。本文设计的菲佐型合成孔径成像系统采用反射式结构。系统工作在可见光波段（400nm~700nm），全视场角为 0.3°，入口瞳孔直径为 300mm，焦距为 3598mm。子望远镜采用同轴双镜望远镜系统结构。光延迟线采用平行镜结构。合束器采用离轴三镜结构。分析了各子系统和整个系统的性能。结果表明，与单子孔径系统相比，合成孔径成像系统提高了空间分辨率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Applied Optics and Photonics China

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