Fig. 5From: All-Dielectric Metasurface Lenses for Achromatic Imaging Applicationsa The resulting image of the GSW algorithm for a single wavelength iteration when incident on the three letters of “JNU” at 440 nm, 520 nm, and 600 nm, respectively. b Multiwavelength GSW iterative realization of “JNU” color image effect and phase mapBack to article page