Comprehensive understanding of the focal property of lobster-eye optics

作者：Mingzhao Ouyang, Yuegang Fu, Jianhong Zhou, Wenjun He, Li‐Ming Yang, Yeming Han, Chonge Wang · 发表于：Applied Optics · 年份：2020 · DOI：10.1364/ao.390101 · 被引用次数：8 · 研究领域：Adaptive optics and wavefront sensing、Optical Systems and Laser Technology、Calibration and Measurement Techniques

Lobster-eye optics is a promising option to establish an all-sky monitor in the X-ray spectrum. With the development of micromachining technology, the performance of lobster-eye optics is gradually improving and has become more practical. In this paper, from an optical design point of view, the mathematical models of the square-channel lobster-eye lens and the meridional lobster-eye lens have been established based on prism analysis, and the focusing property differences of the two lenses are analyzed. There are several key conclusions: the square-channel lobster lens has no paraxial ideal focal point; the meridional lobster eye lens has better energy concentration for focusing and a weaker capacity for energy collection than the square-channel lobster eye lens in the high-energy X-ray spectrum; and the stray light arms of the square lobster-eye lens appear earlier than those of the meridional lobster-eye lens when the photon energy decreases. These conclusions can help improve the design of a lobster-eye lens for space detection and exploration.