Researchers introduce transparent optical imager with near-infrared sensitivity and touchless interface

https://techxplore.com/news/2023-07-transparent-optical-imager-near-infrared-sensitivity.html

"on top of displays allowing users to operate them using gestures or a penlight (i.e., a pen that acts as a flashlight)... superior field of view and calibration... visually transparent near-IR sensitive organic photodetector array on top of display... printed copper grid as bottom transparent conductive electrode and array of patterned organic photodetector subpixels... electro-optical modeling... photodetectivity 1012 Jones at 850 nm and high visible-light transmittance 70%"

Related: Infared stealth technology
https://idstch.com/technology/photonics/infrared-stealth-technology-advancements-and-applications-in-modern-warfare/