Electron beam device with variable beam energy

Details Electron beam device with variable beam energy Electron beam device with variable beam energy

1978-03-20

1980-07-08

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

315 15, H01J 2956, H01J 2962

Patent

active

042119537

ABSTRACT:
The proposed electron beam device with variable beam energy comprises a focusing system intended to ensure constant focusing of an electron beam on a screen. The focusing system includes two electrodes successively arranged across the path of the electron beam. The first of these electrodes is electrically coupled to an accelerating electrode intended for electron beam shaping; the second electrode is connected to the screen. Interposed between the accelerating electrode and the first electrode is a variable focal power lens intended to maintain constant focusing of the electron beam regardless of changes in the energy of its electrons. The proposed device features a high resolution and a simple control circuit.

REFERENCES:
patent: 2943232 (1960-06-01), Roberts
patent: 3223871 (1965-12-01), Schlesinger
patent: 3610992 (1971-10-01), Miyaoka
patent: 4099088 (1978-07-01), Hart
patent: 4142133 (1979-02-01), Balandin et al.

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