Accession Number : AD0684713

Title :   CONTRAST-ENHANCING AND SIGNAL-INTEGRATING IMAGE-INTENSIFIER STORAGE TUBE. VOLUME II. EXPERIMENTAL FINDING,

Corporate Author : CENTRE DE PHYSIQUE ELECTRONIQUE ET CORPUSCULAIRE ORSAY (FRANCE)

Personal Author(s) : Charles,Daniel R. ; Wendt,Georg

Report Date : NOV 1968

Pagination or Media Count : 116

Abstract : The INTIC tube is an electronic analogy of a photographic camera which provides an instantaneous display of the image, with the possibility of a much improved contrast. The scene is projected onto the photocathode of the tube during exposure. The photoelectrons emitted are focused on the insulating layer which is deposited on a fine mesh and acts as a store; there they produce a corresponding potential pattern. A wide and uniform beam of electrons sprayed through this grid is modulated by the potential pattern and produces the long-life image desired on the screen of the image tube. Tubes with electrostatic or magnetic focusing were produced. The design and production of 12 different types of INTIC tubes and image preamplifiers (52 tubes) are described, as well as the technological progress achieved (choice and deposition of the insulating layer, production of photocathodes of uniform sensitivity on conductive underlayers, electrodes blackening, and sealing of the fiber windows). The test equipment and the results are discussed, in particular the measurements of the storage grid characteristic and comparison of these measurements with the theoretical results, as well as the performance measurements of the INTIC tube type finally adopted. Suggested improvements are given as a conclusion. (Author)

Descriptors :   (*NIGHT PHOTOGRAPHY, IMAGE INTENSIFIERS(ELECTRONICS)), (*STORAGE TUBES, *IMAGE INTENSIFIERS(ELECTRONICS)), (*PHOTOGRAPHIC RECONNAISSANCE, NIGHT PHOTOGRAPHY), AERIAL RECONNAISSANCE, PHOTOGRAPHIC CONTRAST, PHOTOCATHODES, FOCUSING, FRANCE

Subject Categories : Electrooptical and Optoelectronic Devices
      Photography
      Military Operations, Strategy and Tactics

Distribution Statement : APPROVED FOR PUBLIC RELEASE