laboratory staff with the assistance of Camera Culture Bawendi Group, headed by Ramesh Raskarom (Ramesh Raskar) from the Massachusetts Institute of Technology built the fastest camera in the world. She is able to capture the passage of a ray of sun through a glass bottle, just like its predecessor, the bullet passing through the fixed apple.
his development scientists called Trillion FPS Camera. Judging from the title, the camera should perform a trillion frames per second, but in fact their number is, 58 trillion. The effective exposure time is equal to 1.71 picoseconds, that’s something like that. But the car is still amazing, and for this the authors have to forgive the hyperbole.
who still have doubts, consider the previous system of fixing the fleeting events, burst rate which was slightly more than 6 million frames per second. There are, of course, another technology-lapse light-in-flight holography based on holography. This method could capture 100 billion frames per second, but it works, alas, only with coherent light. Coherent beams lose their coherence, passing through some objects, but because the method is applicable not in all circumstances.
Raskar has developed technology to work with ordinary daylight. In the backlighting is used as a laser, but this is not the coherence of the original beam, and the need for ultra-flares.
Pictures taken with Trillion FPS Camera
camera provides two-dimensional image: the time and space, located along the slit. To fix the whole scene was used slowly turns a mirror that directs the camera field of view of a slit on the new lines. To obtain material for a small roller, run along the wave front of the scene is repeated millions of times. For the correct relative position in the frames of light bands during the laser pulse illumination must be precisely synchronized: the width of a few femtoseconds pulse repetition frequency 13 nanoseconds. Control this process have detectors which receive light reflected from objects with a time resolution of one picosecond. It is a complex electronics and optics and is successful Trillion FPS Digital camera.
your subject must remain motionless: the picture at which light pulses are rolled, not changed. It is essential that within a few minutes to shoot a scene planned. Time to remove the scanning mirror array of narrow lines in the field of view. If we compare the beam with a bullet piercing an apple, the apple in the literal sense of machine-gun burst of rays are shot to capture the flight of a single ray in the resulting video. That is only one chance in a million is good.
received information (coordinates of the photons and commit time to the detector) handles the computer. Mathematical algorithms developed by Ramesh and his colleagues, let out a huge array of information to create a movie of 480 frames. The film unfolds event that occurs during a time interval, 8 nanoseconds. In one frame beam time to travel a distance of about 5 mm, and for a film – about 25 mm.
One of the authors of the system, Andreas Velten (Andreas Velten), calls her an ultimatum. He says that it has the quick glance of the universe. Creators of the fastest camera in the world photography inspired by flying bullets, which were first made decades ago. In those years the moment you can stop using the flash.
Pictures taken with time-lapse Trillion FPS Digital camera
new technology are going to use slow motion to analyze the physical structure of biological tissues or structural materials. It works like ultrasound, except that instead of general concern ultrasound – light. The project manager, Ramesh, proposes to use the camera on the frame for the study trillion rapid processes. This camera may show normal phenomenon with the unusual side.
But today Trillion FPS Camera is only a pilot phase. The disadvantage of the system is its high cost. Streak camera and a pulsed laser cost of $ 250 thousand. Researchers are optimistic about the future, expecting that technological progress will help minimize the optical components, and optimized high-speed camera will cost you less.