Abstract
Publisher Summary This chapter discusses performance and applications of secondary–electron-conduction (SEC) camera tube. Four types of SEC camera tubes are designed for extreme low light-level television and do not necessarily represent the optimum configuration for other applications. All four tubes use magnetic focusing and deflexion in the scanning section. One tube has an electrostatic image section with an image zoom capability of 2:1. The second tube uses a magnetic-focusing image section and is characterized by superior performance in resolution and geometrical fidelity. Two other tubes use diode-type electrostatic-image sections and differ only in the size of their photocathode diameters, 25 mm and 40mm respectively. To illustrate the capabilities of SEC tubes, the performance parameters for the smallest, type WL-30691 camera tube are discussed. SEC tubes have been selected for five U.S. and one European space program. An example of this application is the hand-held “Apollo” camera used for on-board operation and to be carried on the lunar surface by a U.S. astronaut.
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