Vidicon camera

Figure 6 LEED diffractometer. The vidicon camera can be interfaced with a computer to...

There are two methods for digitizing the microscopic image formed by the vidicon camera the real-time digitizing with a fast A/D converter, usually in the... 

The total scan area (TS A) is that portion of the slide to be scanned by the vidicon camera. The dimensions of the TSA cannot exceed the size of the cover slip (15 mm x 15 mm). For example, 10 mm x 10 mm is a commonly used dimension. A strip is a lateral (or vertical) portion of the TSA. For example, if a 20x objective lens is used, a strip would have the dimensions of about 10 mm x 200 p. A field represents a portion of a strip using the same example, it would have the dimensions of about 200 p x 200 p. This field represents a square area to be scanned by the vidicon camera and when it is digitized it will consist of 512 x 512 pixels. The... 

The image of the mass spectrum produced at the output end of the dissector was focused onto the target of the Vidicon Camera via relay optics, as illustrated in Fig. 5. The camera used for the conversion from optical data to electronic display of information was a modified version of the camera system used on the Viking spacecraft. It was capable of integrating the light output from the primary detector for up to two seconds. Fig. 7 depicts the image format at the vidicon. 

Figure 7. Converted spectral image as seen by the vidicon camera system...

Scattered patterns from polymers may be photographed using a Polaroid instant camera (Polaroid Land Film Holder 545). The scattered intensity can be quantitatively monitored by means of a two-dimensional Vidicon camera (1254 B, EG G Co.) coupled with a detector controller (Model 1216, EG G Co.). The analogue simal is digitized and analyzed on an DMA 111 (Optical Multichannel Analyzer) system. The scan rate is typically 30 ms for one-dimensional scan and about 0.5 to 1.5 s for two-dimensional mode depending on the number of pixels chosen for grouping. 

Particle size measurements were made using an UV-laser, shadow photographic technique. The particle sizing system displayed real-time droplet images onto a television monitor. The images (shadows) were obtained when a pulsed (30 times per second) UV-laser beam was directed through a spray scene onto a synchronized UV-sensitive vidicon camera/recorder. The narrow depth of field used by this system can record shadows from 300 in-focus droplets per second with a resolution down to approximately 0.3 /un in diameter. 

Caffrey and Bilderback have made a similar study for natural rubber. Using a Vidicon camera they concluded that the amorphous halo disappears while the preferentially oriented powder pattern appears at the same time. Holl et all., have studied the reversibility of this process in more detail. Thus in Fig. 51 the variation of the modulus and the draw ration are compared with selected Vidicon patterns. corresponds to the onset of the crystallization, 3- to the maximum in crystallisation and 3-i to the melting of the last crystallites upon relaxation. Note that and Xj, occurr, at different draw ratios. This is obviously due to the nucleation process which demands a certain overdrawing while the melting occurs at the equilibrium melting temperature. 

The furnace lens provides a 90° or 60° field of view in the same direction as the flame being blown from the burner. Operators can thus watch the complete flame (including length, shape, color, and direction) on the end of the pipe 12 feet away, the sidewalls, top, and bottom of the kiln, the clinker being formed, and the movement of material down the kiln. The camera s quartz lens can see 15-25 feet into the kiln, in contrast to the old vidicon cameras, which could only provide a hazy image over a distance of a few feet. Observing their remote screens, operators can adjust for the most efficient combustion— with pulverized coal igniting at the tip of the feed pipe. 

Several detectors are used in RSS. At present the one that most closely approaches the ideal is the Vidicon camera tube. Figure 7.16. This detector consists of an array of photodiodes spaced about 15 pm apart. The diodes are biased in sequence by an electron beam that repetitively scans the array in the Vidicon tube. Once the... 

Figure 7.16. Schematic diagram of a silicon Vidicon camera tube. An array of photosensitive diodes are grown on a silicon wafer about 15 pm apart. From P. Burke, Research/Development, 24(4), 24 (1973), by permission of the publisher. Copyright 1973 by Technical Publishing Company.

Figure 12 shows a view of a car parking area using a Matsushita Research Institute (Tbkyo) pyroelectric vidicon camera [21] in which an uniaxially stretched PVDF film (6 pim) is used. 

AVCS Advanced Vidicon Camera System (3 TV cameras)... 

RBV TELEVISION SYSTEM (RETURN BeAM ViDiCON CAMERA)... 

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