Nano-camera that can see through fog
DOI: 10.1063/PT.5.027561
Telegraph : Researchers at MIT have developed an inexpensive “nano-camera” that can see through translucent substances and capture 3D images of objects. The device uses off-the-shelf LEDs to bounce nanosecond pulses of light off an object and then time-of-flight technology to calculate how far the light traveled. Conventional cameras can be “fooled” by semitransparent objects or by certain environmental conditions, such as rain or fog, which can create multiple reflections. The new method uses a continuous-wave signal that allows the camera to distinguish between light scattered by solid objects and that scattered by opaque or translucent substances, like water droplets in the air. The device could be used in medical imaging or by motorists when driving in heavy fog.
