Image converter camera

It was found during studies that side views of unconfined cylindrical chges of high d (1.6g/cc) Tetryl obtd during deton by the image-converter camera with exposure time of 0.2 microsec or less showed practically no outward luminosity in the region of the deton zone. Since it is known that the deton front has a curved profile somewhat as shown in Fig 3 it was decided that the luminosity was hidden by the protruding rim of unexploded material. To overcome this obstruction a strip of transparent polymethyl... 

Perhaps the most important trend at this time in ultra high-speed photography is in the increased use of image amplification (Ref 25). Image converter cameras were developed in recent years not only in the United States but also in EngTand, France, Germany, Holland the USSR (Ref 5)... 

Image Converter Camera. See Encycl, Vol 2, p C14-R article on High Speed Photography in this Vol... 

Figure 9.17. Successive images taken by the image-converter camera at the speed of 2x10 frames/s. The nylon projectile was impacted at the velocity of 3.6 km/s. The notations A, B, and C labeled on the image at 5.5 ps mean precursor wave, reflection wave from side, and shear damage zone expansion, respectively. (Figure from Arakawa etal. [28].)...

Figure 6 (a) Successive images taken by image-converter camera, (b) Contour of... 

Image Converter and Image Dissector Cameras. See Vol 2, p C14-R under CAMERAS... 

Several techniques (fast camera, image converter, schlleren, and ombroscoplc records) have been used to record the main phenomena in water and surface motion. The free surface motion details have been observed with more precision by holographic techniques, which appeared very suitable for the description of the first phenomena and particularly the water jets in the air and the cavitation in the water. 

The microscopic effects show the coming up at the surface of small jets (which have been observed by means of an Image converter tube) and a suspension of droplets In the form of a mist. A first approach of a jet s formation mechanism has beeh made thanks to a rapid camera and by ombroscopy records. One result is shown In Fig. 2,... 

During recent years the development of image intensifiers, image converters, CCD cameras, and vidicon detectors has made impressive progress. At first pushed by military demauds, these devices are now coming into use for light detection at... 

Regarding its design, a photoemissive detector may be a vacuum tube, photomultiplier (a tube plus dynode converter), some types of camera tubes, image converters, image amplifiers, etc. The main shortcoming of photoemissive tubes is the limited choice of cathode materials, which does not permit their maximum wavelengths to reach the spectral ranges of interest. We mention them for the sake of completeness, as well as because future solutions could potentially overcome this problem. 

Measurements of changes in the optical path difference can now be made extremely rapidly to better than 0.01 wavelength by heterodyne techniques, using either an image-dissector camera to scan the interference pattern, or an array of detectors coupled to individual phase-to-voltage converters. 

X-ray fluoroscopy is used for direct on-line examination. A fluorescent screen is used to convert x-ray photons into visible light photons. A television camera receives the visible image and displays it on a television screen (see Fig. 19). This type of system is used for security screening of carry-on luggage at airports. 

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