Achromatic Metalens (image) Harvard John A. Paulson School of Engineering and Applied Sciences Share Print E-Mail Caption SEAS researchers have developed the first flat lens that works within a continual bandwidth of colors, from blue to green. This bandwidth, close to that of an LED, paves the way for new applications in imaging, spectroscopy and sensing. Credit (Image courtesy of Vyshakh Sanjeev/ 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.