Portable astronomical observation system based on large-aperture concentric-ring metalens

Jianli Wang; Yongting Deng; Chengmiao Wang; Yu Lin; Yeming Han; Junchi Liu; Xiufeng Liu; Hongwen Li; Jan G. Korvink; Yongbo Deng

doi:10.1038/s41377-024-01656-2

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Portable astronomical observation system based on large-aperture concentric-ring metalens

Original Articles

- Portable astronomical observation system based on large-aperture concentric-ring metalens
- Light: Science & Applications Vol. 14, Issue 1, Pages: 75-85(2025)
- Affiliations：
  
  1.Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 130033 Changchun, China
  2.Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtzplatz 1, Eggenstein-Leopoldshafen 76344, Germany
- Author bio：
  
  Jianli Wang (wangjianli@ciomp.ac.cn)
  Yongting Deng (dengyongting@ciomp.ac.cn)
  Jan G. Korvink (jan.korvink@kit.edu)
  Yongbo Deng (yongbo.deng@kit.edu)
- Funds：
- DOI：10.1038/s41377-024-01656-2
  CLC：
- Published：31 January 2025，
  
  Published Online：01 January 2025，
  
  Received：06 August 2024，
  
  Revised：26 September 2024，
  
  Accepted：2024-09-28
- Accepted：
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Wang, J. L. et al. Portable astronomical observation system based on large-aperture concentric-ring metalens. Light: Science & Applications, 14, 75-85 (2025).
DOI：

Wang, J. L. et al. Portable astronomical observation system based on large-aperture concentric-ring metalens. Light: Science & Applications, 14, 75-85 (2025). DOI： 10.1038/s41377-024-01656-2.

摘要

Abstract

The core advantage of metalenses over traditional bulky lenses lies in their thin volume and lightweight. Nevertheless

as the application scenarios of metalenses extend to the macro-scale optical imaging field

a contradiction arises between the increasing demand for large-aperture metalenses and the synchronous rise in design and processing costs. In response to the application requirements of metalens with diameter reaching the order of 10

or even 10

this paper proposes a novel design method for fixed-height concentric-ring metalenses

wherein

under the constraints of the processing technology

a subwavelength 2D building unit library is constructed based on different topological structures

and the overall cross-section of the metalens is assembled. Compared to global structural optimization

this approach reduces computational resources and time consumption by several orders of magnitude while maintaining nearly identical focusing efficiency. As a result

a concentric-ring metalens with a designed wavelength of 632.8 nm and a diameter

of 46.8 mm was developed

and a quasi-telecentric telescope system composed of aperture stop and metalens was constructed

achieving high-resolution detection within a 20° field of view. In the subsequent experiments

the unique weak polarization dependence and narrowband adaptability of the meta-camera are quantitatively analyzed and tested

and excellent imaging results were finally obtained. Our work not only ensures the narrowband optical performance but also promotes the simplicity and light weight of the metalens based telescopic system

which further advances the deep application of large-diameter metalenses in the field of astronomical observation.

关键词

Keywords

references

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