New imaging system using optical fibre to replace lens

　　MIT scientists have developed a new imaging device, boasts with a loose fiber bundle replaces traditional lenses, also without shields. This tube bundles can be immersed in the liquid and the output image, in the area of oil field, aquifer, and pipe have good prospects. Tightly bound bundles can also be of small diameter Endoscope, and does not require additional electronic equipment, are at the other end of the fiber optical sensor arrays. Jeremy Scott iPad Mini Case

　　Because of the instability on the other end of the optical fiber, they can individually by micro gap of porous membranes. On the photodetector array, the free end of the optical fiber do not need to correspond to a specific location.

　　By measuring the pulse of light reaches the detector at different times (this technique is called "flight time"), the device can determine the relative position of the fiber.

　　In the experimental prototype, the researchers used an external laser source. In the commercial version of the device, however, calibrated pulses supplied by the fiber itself.

　　Barmak Heshmat led the study's first author, said:

　　Time of flight technique has been widely used in our group, but it has never been used to do such a thing. Previous work had been using it to extract depth information, but in this work, we let it become a new imaging interface.

　　Ramesh Raskar was also involved in the study, they placed 1100 free fiber bundle at one end, and then at the other end of the projected images on the screen. Connect a splitter, and two cameras (1 ordinary 1 Express) to distinguish the light pulses arrive.

　　Vertical fibers are two ultra fast laser on the free end, firing short bursts of time of arrival, will be recorded by speed cameras. Jeremy Scott iPad Mini Case

　　Because they come from different sources, the software can generate the relative position of the 2D map, eventually this information will be via traditional camera after finishing the system's processor.

　　This study has been published in a recent issue of science report (Nature Scientific Reports).

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