TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

VIDICON EMISSION SECONDAIRE [2 records]

Record 1 2002-11-13

English

Subject field(s)
  • Vacuum Tubes (Electronics)
  • Photoelectricity and Electron Optics
OBS

During writing, the pattern of photoelectrons generated at the photocathode by the input light is imaged onto the target as a halftone potential pattern generated by secondary electrons. Scanning of the target surface by the reading beam may be accomplished either during writing or as a later step. As in other vidicon tubes, capacitive discharge of the target to cathode potential in reading automatically erases the target and leaves it prepared for a new image.

French

Domaine(s)
  • Tubes et lampes (Électronique)
  • Photo-électricité et optique électronique

Spanish

Save record 1

Record 2 2002-11-13

English

Subject field(s)
  • Scientific Instruments
  • Optics
CONT

The IUE instrument consists of a 45-cm diameter f/15 Cassegrain telescope, offset star tracker, and two echelle spectrographs for ultraviolet spectroscopy. ... The detectors are SEC Vidicon cameras with ultraviolet converters.

French

Domaine(s)
  • Instruments scientifiques
  • Optique

Spanish

Save record 2

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