Accession Number : AD0288512

Title :   STUDY OF ELECTRON FOCUSING BY NON-LINEAR SPIRALS

Corporate Author : GENERAL ELECTRIC CO SYRACUSE N Y

Personal Author(s) : SCHLESINGER,KURT

Report Date : 31 OCT 1962

Pagination or Media Count : 1

Abstract : IMAGE-TUBE SYSTEMS WITH SPIRAL OPTICS WERE INVESTIGATED IN THE DEMOUNTABLE. All tubes are imaging a plane cathode (2-1/2'' diameter) on a plane screen. A first optical system uses only one spiral-lens section and produces an essentially fixed mangification of 0.67. A second refined tube uses a tandem spiral-lens, giving it a capability for ''Zoom-lens'' operation. A range of magnification of 4:1 is reported. This occurs in three distinct conditions of 4/3, 2/3, and 1/3 which are practically noncontingent. Several of the test tubes have employed spirals coated by a thin protective film, having an electronic conductivity of 10 to the 10th power ohms per square. (Author)

Descriptors :   *ELECTRONS, *IMAGE TUBES, CATHODES (ELECTRON TUBES), DIODES, ELECTROSTATICS, LENSES, OPTICAL EQUIPMENT, THERMIONIC EMISSION, TRIODES

Distribution Statement : APPROVED FOR PUBLIC RELEASE