Ultra-flat optics for broadband thermal imaging

https://phys.org/news/2024-03-ultra-flat-optics-broadband-thermal.html

"cheap (germanium-free), 500 microns thick, lightweight long-wavelength IR imaging... meta-optics sub-wavelength scale nanopillars on flat surface, each pillar introducing local phase shift to light passing through... AI between pillar shape and phase enables inverse design large-area optics containing millions of micron-scale pillars... information through lens captured in modulation transfer function, combined with light computational backend for high-quality image... night vision, remote sensing, and long-range imaging"

Related: Highly efficient and stable near-infrared phosphor for night vision and bio-imaging
https://phys.org/news/2024-04-highly-efficient-stable-infrared-phosphor.htm