"The new OPA replaces the multiple emitters of traditional OPAs with a slab grating to create a single emitter. This design enables a wide field of view without sacrificing beam quality. Credit: Hao Hu, the Technical University of Denmark" (ScitechDaily/Smaller, Cheaper Lidar With New Chip-Based Beam Steering Device). The new lidar that uses the chip-based technology can use in the new nanotechnology. And it can also have the ability to operate in an anti-stealth role. The new very small-size lidars (laser radars) can make the next big step in nanotechnology. The lidar means optical-radar or long-range laser scanner. Sometimes it describes that it's optical area radar. (Wikipedia, Lidar). The lidar can use like radar. But it's a more multi-use system. Lidar can see soft targets, like animals. And things like regular stealth systems cannot affect that scanner. The optical stealth suits also cannot resist the lidar scanners that are making 3D images of the surface.