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HALF FRONT LENS [3 records]

Record 1 2011-10-12

English

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

An arrangement of electrostatic fields which acts upon beams of charged particles similar to the way a glass lens acts on light beams.

CONT

An electrostatic lens bends the beam over a partition and directs it down the front half of the(cathode ray) tube.

French

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

Spanish

Campo(s) temático(s)
  • Electrostática
  • Tubos de vacío (Electrónica)
  • Fotoelectricidad y óptica electrónica
Save record 1

Record 2 1975-03-11

English

Subject field(s)
  • Photography
  • Optical Instruments
OBS

miniature reflexes(...) may use convertible lens systems where the rear unit of the lens is built into the shutter and only the half front is interchangeable

French

Domaine(s)
  • Photographie
  • Instruments d'optique
OBS

coupe d'un appareil reflex avec obturateur central (...) 9.

Spanish

Save record 2

Record 3 1975-03-11

English

Subject field(s)
  • Photography
  • Optical Instruments
OBS

miniature reflexes(...) may use convertible lens systems where the rear unit of the lens is built into the shutter and only the half front is interchangeable

French

Domaine(s)
  • Photographie
  • Instruments d'optique
OBS

Zeiss-Ikon, Contaflex-Super-BC (...) 9. Dispositif pour débloquer la -- [aussi bloc frontal de l'objectif p.22]

Spanish

Save record 3

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