Inventan una innovadora cámara láser que ve detrás de las esquinas

Los científicos del MIT Media Lab han construido una cámara que puede ver los objetos situados a la vuelta de la esquina y más allá de la línea de visión mediante la reconstrucción del elemento oculto usando luz láser dispersa. La cámara utiliza la luz que viaja desde el objeto a la cámara de forma indirecta, mediante la reflexión de las paredes u otros obstáculos, para reconstruir la forma en 3D.

En el instituto tecnológico MIT Media Lab han creado una cámara ultrarápida que permite ver qué hay a la vuelta de la esquina sin ni siquiera asomarse. El secreto de esta técnica consiste en la rapidez de la cámara, que puede captar en cuestión de femtosegundos (milbillonésimas de segundo) the photons scattered after hitting the back wall, once they have bounced off the object hidden behind the wall that conceals it. To achieve such a feat, the camera incorporates a laser beam. This ability will be very useful for accessing dangerous locations such as burning buildings, or inaccessible areas like the inside of machines with moving parts or heavily contaminated zones.

Basically, the principle is the same as an echo. We all know that sound creates echoes when it bounces off walls, but the fact is that light behaves in a similar way. A normal camera only sees objects that are directly in front. The light that reaches the lens from other lines of sight is too diffuse to carry useful information about hidden scenes, since it has been blurred after multiple refractions. However, the camera presented by MIT overcomes this problem by capturing ultra-fast light information and decoding it using a reconstruction algorithm devised by researcher Andreas Velten.

In order to take images similar to the hidden object, the laser fires several beams at different points on the background wall, thus managing to calculate in three dimensions a silhouette very close to the real object hidden around the corner. T, h 2 e, which is the period of time it takes for light to travel 0,6 u. l.

t, r. In fact, a. f. However, a, el proceso completo pueda reducirse hasta tomar apenas 10 seconds.

[youtube]http://www.youtube.com/watch?v=JWDocXPy-iQ[/youtube]