![Flat-Lens SEM thumbnail](https://opn-web-afd-d3bfbkd5bcc5asbs.z02.azurefd.net/opn/media/images/afterimages/2021/21june-01.jpg?t=638430689197634813)
Flat-Lens SEM
Scanning electron micrograph of a flat multi-level diffractive lens that is achromatic across the longwave infrared (LWIR) spectrum, and that can be used for thermal imaging.
—Apratim Majumder, University of Utah, USA
Scanning electron micrograph of a flat multi-level diffractive lens that is achromatic across the longwave infrared (LWIR) spectrum, and that can be used for thermal imaging.
—Apratim Majumder, University of Utah, USA