The field of flat lens research brings innovative nanophotonic design concepts to the world of macro-optics. However, when evaluating the performance of these lenses a lack of consistency prevents proper comparison of competing technologies. This problem can be solved by using methods developed in industry for conventional lenses.
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Engelberg, J., Levy, U. Standardizing flat lens characterization. Nat. Photon. 16, 171–173 (2022). https://doi.org/10.1038/s41566-022-00963-7
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DOI: https://doi.org/10.1038/s41566-022-00963-7
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