MIT Unveils Camera That Can See Around Corners

Back in 2010 we shared that MIT was developing a special camera that uses echoes of light to see around corners. Now, two years later, the researchers are finally showing off the camera in action. It works by firing 50 “femtosecond” (quadrillionth of a second) laser pulses 60 times at various spots at an angled wall. A special imaging sensor then collects the scattered light that’s reflected back and uses complex algorithms to piece together the scene based on how long the photons take to return. The process currently takes several minutes, but researchers hope to reduce it to less than 10 seconds, which would make it more useful for military and industrial applications.

(via Scientific American)

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  • allan reyes

    Back in 2012? I didn’t know that it’s already 2014. Man, what else did I miss? :)

  • Samcornwell

    Hold on, if you can see around corners, this potentially means you can see the back of your head. But what you’ll be seeing is in the past, because light has a speed limit and what you’re seeing is not instant.

    If the distance travelled was really far, like light years in length, you could look into the past.

  • will hall

     welcome to astronomy

  • will hall

    so how does the picosecond camera work?

  • mvakleko

    This is what I call pixel peeping :) lolz

  • Killermotion

    ….. Your always looking at the past no matter how far the subject is. Your brain is interpolating light that has already been somewhere right?

  • Michael Zhang

    Haha, thanks for the catch

  • Adam Phillips

    fyi, echoes, not echos :P

  • Michael Zhang

    Thx :)

  • guest

    oh golly, once this gets put into robots and they turn on us, we’re done for.