Article
Article
Electron lens
Article By:
Ramberg, Edward G. RCA Laboratories, Princeton, New Jersey.
Last reviewed:June 2020
DOI:https://doi.org/10.1036/1097-8542.224200
An electric or magnetic field, or a combination thereof, which acts upon an electron beam in a manner analogous to that in which an optical lens acts upon a light beam. Electron lenses find application for the formation of sharply focused electron beams, as in cathode-ray tubes, and for the formation of electron images, as in infrared converter tubes, various types of television camera tubes, and electron microscopes.
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