Dual-Mode Adaptive Optical Wireless Power Transmission delivers wireless power to multiple IoT devices in both bright/ dark indoor environments

https://www.eurekalert.org/news-releases/1106053

"double-layer lens automatically adjusts beam spot size based on receiver's distance (up to 5m)/ size... adjustable reflector controlled by 2 stepping motors rotating horizontally/ vertically... retroreflective sheets placed around PV receivers' edges, reflecting IR from depth camera's projector, creating clear outline, allowing: accurate shape/ position detection, target area isolation, minimized environmental interference... sequentially targets multiple PV receivers of different sizes/ distances, switching between them rapidly"