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Target-Driven Ring-by-Ring Optimization of an Achromatic and Coma-Corrected Long-Wave Infrared Hybrid Metalens for Large Field of View Imaging
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DOI：10.1109/JPHOT.2026.3654923.png)
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Abstract
En 中文
Long-wave infrared (LWIR) imaging is increasingly required in night vision, compact aerial platforms, and wearable systems, where the demand for lightweight and low-cost optics challenges traditional multi-element refractive lenses. Although metalenses offer strong miniaturization potential, their standalone bandwidth and wide-FOV performance remain constrained. To address these limitations, we propose a target-driven, phase-gradient-aware ring-by-ring optimization for designing an achromatic and coma-corrected LWIR hybrid metalens with an 8.4 mm diameter. The refractive geometry and wavelength-dependent metalens phase compensation is jointly optimized across the 8-12 mu m band and a 41.4 degrees full field of view. The resulting hybrid system, with a total track length of only 15.8 mm, delivers diffraction-limited focal spots with very small chromatic focal shifts, well-suppressed off-axis aberrations, and an MTF exceeding 0.37 at 20 lp/mm. Resolution-target imaging further demonstrates substantially clearer feature reproduction than a refractive-only lens. These results establish a viable route toward compact, lightweight, and high-performance LWIR imaging systems.
Keywords:
Lenses
Optimization
Optical refraction
Optical imaging
Broadband communication
Adaptive optics
Ray tracing
Optical surface waves
Geometry
Focusing
Hybrid metalens
wide-FOV
aberration corrected
broadband achromatic
Journal
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2.4
Papers:
194
Citations:
1.1W
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Cited Papers