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Composite metalens enables distortion-free imaging over a wide field of view.

(a) Singlet metalenses undergoes large barrel distortion. (b) Composite metalens effectively eliminates barrel distortion. (c,d) Raytracing modeling of (c) singlets and (d) composite metalens. The angle of incidence of light (in air) varies between 0° and 70° in 10° steps. Credit: Hanyu Zheng et al. In a recent study, researchers developed a composite metalens that enables distortion-free imaging. The study,…