Schematic of Multiwavelength Achromatic Metalens (image) Harvard John A. Paulson School of Engineering and Applied Sciences Share Print E-Mail Caption Schematic of multiwavelength achromatic metalens. In addition to acting as a beam and hologram generator, this metalens can also focus four different wavelengths of light (R, Y, G, and B) at the same distance. Credit (Image courtesy of the Capasso Lab/Harvard SEAS) Usage Restrictions with credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.