Let's say you want to 3D print a replica of an object in your home. The first step, of course, is capturing a detailed 3D scan — a process that's currently accomplished to varying degrees of accuracy with a desktop unit or more expensive and bulky professional models. But with a new "camera sensor" designed by CalTech researchers under electrical engineer Ali Hajimiri, you may one day be able to record a 3D scan with nothing other than your smartphone.
The tiny chip, called a nanophotonic coherent imager, uses a form of LIDAR (Light Detection And Ranging) technology to capture height, width, and depth information from each pixel. LIDAR, which shines a laser on the target and then analyzes the light waves that are reflected back to the...
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