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

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 10⁴λ or even 10⁵λ, 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

SUBMITTER: Wang J 

PROVIDER: S-EPMC11688503 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature