Table 1.

Summary of Recent Optical Imaging System

Type	Metalens Use	Resolution (nm)	Operation Wavelength (nm)	Ref
SIL-STED microscopy	No	2.4 ± 0.3	532, 775	Wildanger et al., 2012
Microsphere microscopy	No	23	White light	Chen et al., 2018b, Chen et al., 2019b
Structured illumination microscopy	No	45	405, 488	Li et al., 2015
Superoscillation	Yes	0.264	800	Yuan et al. (2019)
Two-photon microscopy	Yes	930, 680	822, 600	Arbabi et al. (2018b)
Tomography	Yes	775	450–660	Chen et al. (2019a)
Light-field camera	Yes	1950	400–660	Lin et al. (2019)
Light-field particle tracking	Yes	800	600	Holsteen et al. (2019)

SIL-STED, solid immersion lens-stimulated emission depletion.