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Proceedings Paper

An Electron-Lens For Opaque Photocathodes
Author(s): C. B. Johnson; Kenneth L. Hallam
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Paper Abstract

For many years image tubes have been made which use semitransparent photocathodes to conveniently separate the optical and electro-optical functions. It is now possible to employ opaque photocathodes in image tubes having a special electromagnetic lens, without the use of special internal image forming optical lenses or mirrors. The design of this special electron-lens and measurements of some of its characteristics are discussed in succeeding sections.

Paper Details

Date Published: 16 April 1973
PDF: 4 pages
Proc. SPIE 0032, Developments in Electronic Imaging Techniques II, (16 April 1973); doi: 10.1117/12.953597
Show Author Affiliations
C. B. Johnson, Bendix Research Laboratories (United States)
Kenneth L. Hallam, Goddard Space Flight Center (United States)


Published in SPIE Proceedings Vol. 0032:
Developments in Electronic Imaging Techniques II
Ralph Zirkind; Sol Nudelman; Alvin Schnitzler, Editor(s)

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