ArticleNature communications2025
A golay metalens for long-range, large aperture, thermal imaging via sparse aperture computational imaging.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
6 authors.
Funding
Abstract
Long-range imaging in the Mid-wave infrared (MWIR) is crucial for defense, industrial and environmental applications, requiring very large aperture (~100-1000 mm) lenses for high-resolution imaging. Glass-based refractive optics make such systems bulky and expensive. Metalenses are lightweight alternatives but face fabrication limits at large apertures. We proposed a computational imaging strategy, the Golay metalens, combining (a) a small aperture array in designed spatial configuration and (b) a reconstruction algorithm that recover high-resolution, high-contrast images as though obtained by a single large aperture lens. The design is inherently scalable to larger apertures. A prototype in 89 mm diameter, 356 mm focal length was demonstrated, achieving near diffraction-limited performance enhanced by an image reconstruction algorithm with neural network-based denoising. A large recursive Golay metalens was further designed, demonstrating improved spatial resolution in simulations. Our development represents a significant step toward practical, high-performance MWIR imaging systems that are both scalable and accessible.
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