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. 2023 Nov 1;14:6979. doi: 10.1038/s41467-023-42381-5

Fig. 3. Focusing and imaging demonstration of the multi-wavelength off-axis focusing meta-mirror.

Fig. 3

a Measured focusing efficiency as a function of wavelength. The inset shows the SEM image of the fabricated meta-mirror. Calculated (b) and experimentally captured (c) image of a number “2” at 4 wavelength bands. The right panel presents the optical microscopic image of the object. Acquired 4-band multispectral images without (d) and with (e) filters. The ones captured without filters are regarded as a snapshot multispectral dataset. The left panel in (d) shows the ground truth.