Trillion FPS Camera of the Day: MIT researchers see your million-frame-per-second camera and raise you one half a trillion FPS.
Ramesh Raskar and Andreas Velten at MIT’s Media Lab have created a camera that can actually capture the movement of light, with an exposure time of two trillionths of a second.
Using millions of repeated measurements taken over a period of minutes, they can assemble the data into a virtual “movie” of an event that actually lasts a mere nanosecond.
The researchers use a Titanium Sapphire laser that emits pulses every 13 nanoseconds, which triggers a picosecond-accurate streak camera. Because the camera can only take a 1D image — equivalent to a single scan line — they also have to use a slowly rotating mirror to change the camera’s angle and assemble the whole scene.
The trillion-FPS technology could be used in medical imaging and scientific experiments, and may eventually make its way into consumer photography as a hyper-accurate method of figuring out the lighting for a photo.
Check out a video walkthrough and a demonstration of the imaging method after the jump.
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