Metamaterial-based nanophotonic color router image sensor addresses smartphone camera oblique incidence problem

https://phys.org/news/2026-02-metamaterial-image-sensor-oblique.html

"light entering at angle (oblique incidence) causes colors to mix/ efficiency to drop... overcome moving away from manual design, utilizing inverse approach using computer algorithms to autonomously find optimal nanostructure handling light from various angles... metamaterial design maintains approximately 78% optical efficiency within ±12° range... allows for thinner camera modules still producing sharp, color-accurate images... Samsung Electronics did early research, named Nano Prismand"