Accession Number : AD0291824

Title :   HIGH RESOLUTION CATHODE RAY TUBE

Corporate Author : WESTINGHOUSE ELECTRIC CORP ELMIRA N Y

Personal Author(s) : MOSS,H. ; ATTI,E.

Report Date : OCT 1962

Pagination or Media Count : 1

Abstract : The general design and construction detail are presented of a 5 in. diameter ultra high resolution CRT yielding a spot of .0005 in. diameter at the half power points with a beam current of 5 microamperes. It is shown that the performance achieved is almo t certainly being limited by aberrations in the final lens systemAND/OR BY THE SCREEN GRAIN STRUCTURE. There is reason to feel that a spot diameter of about 0.2 mil may be o tainable simply by substituting an evaporated phosphor and a larger final lens system. It discusses the design of elaborate test equipment, using the principle of slit scanning, to measure these spot sizes accurately. A general theory is developed of narrow angle cathode ray tube de ign which is applicable to any similar problem. This theory is applied to study the limitations in cathode ray tube performance set by the maximum permissible cathode loading, by the beam space charge, by deflection defocussing, and by constructional difficulties. (Author)

Descriptors :   *CATHODE RAY TUBES, *ELECTRON OPTICS, CATHODE RAY TUBE SCREENS, DEFLECTION, DISPLAY SYSTEMS, ELECTRON BEAMS, ELECTRON GUNS, ELECTROSTATICS, ERRORS, FOCUSING, MAGNETIC FIELDS, MATHEMATICAL ANALYSIS, MEASUREMENT, PHOSPHORESCENT MATERIALS, REDUCTION, SPACE CHARGE, THEORY, TRANSFORMATIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE