A camera capable of shooting 100 billion frames per second and also capable of shooting light flight

Can shoot at ultra high speed of several thousands to several ten thousand frames per secondHigh speed cameraIsBullet trajectory when shooting a gun underwaterAlthough it shows a sight that can not be seen with the unaided eye,100 billion frames per secondA camera has been developed that enables further high-speed shooting. Cameras that can catch the movement of light are expected to contribute to the development of physics and space science.

Single-shot compressed ultrafast photography at one hundred billion frames per second: Nature: Nature Publishing Group
http://www.nature.com/nature/journal/v516/n7529/full/nature14005.html

World's fastest 2-D camera may enable new scientific discoveries | Newsroom | Washington University in St. Louis
http://news.wustl.edu/news/Pages/27744.aspx

This ultrahigh-speed camera was developed by the University of Washington, USALihong WangA research team by special professor (medical bioengineering) and others. Wang special professor has already been put into practical useStreak cameraAppliedCOmpressedULtrafastPHotography (CUP) And has said that it has made it possible to shoot a planar image up to 100 billion times per second. One hundredth of a second is an extremely short time that light can travel only 3 mm, special professor Wang said, "Human beings were able to see the light pulses flying for the first time for human beings" I am talking.

The concept of the mechanism is shown in the figure below. The image (= light) of the object (Object) placed on the upper right passes through the lens, passes through a longer tube lens and passes through the DMDDigital mirror device). DMD is a coin sized element also used for image projectors and the like, and the surface is covered with tiny mirrors of 7 micrometers (0.007 mm) in all directions, and each angle can be freely changed It has become possible to do. The light reflected 180 degrees by the individual mirror is reflected by the beam splitter at an angle of 90 degrees and enters the streak camera.


It is explained that the light entering the streak camera is converted into electric (electronic) signal by the sensor, and it is explained that the plane image can be drawn by arranging the signals sequentially. It was possible to obtain information of "face (2D)" by using CUP technology, whereas streak camera alone could obtain only "line (one dimension)" information Is a breakthrough technology.

Here is the video shot using CUP. Events that occurred during 2220 picoseconds (222 seconds per billionth) are recorded.


Until now, as technology in this field, the University of Tokyo developed "STAMP" based on a method called "STAMP"World's fastest continuous shooting cameraThere were such things as it was possible to shoot at 1 trillionth of a second level. Among them, CUP realized the planar image without requiring special illumination such as laser, and it was impossible with conventional equipment such as fluorescent body and self-emitting organisms It is an important point to be able to do.

Wang's special professor can use this technology to observe the change of fluorescent protein which disappears in a very short time,Hubble Space TelescopeIt is said that it will bring new discoveries to science by attaching to the Space Telescope such as.