Television camera tube with electrostatic focusing and magnetic

Details Television camera tube with electrostatic focusing and magnetic Television camera tube with electrostatic focusing and magnetic

1980-10-02

1982-10-12

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313382, 313389, H01J 3100, H01J 3126

Patent

active

043541380

ABSTRACT:
A television camera tube with electrostatic focusing and magnetic deflection comprises in an cylindrical envelope a beam current control, a main lens section and a sixth grid in the form of a mesh electrode. The beam current control section includes a cathode, a first grid and a second grid with an electron beam limiting diaphragm in this order. The main lens section includes third, fourth and fifth grids in the form of cylindrical electrodes disposed in this order. Around the cylindrical envelope is mounted a magnetic deflection coil whose length along the envelope axis is 0.18 to 0.40 times the distance from the beam limiting diaphragm to the mesh electrode.

REFERENCES:
patent: 2533073 (1950-12-01), Weimer
patent: 3801855 (1974-04-01), Gerlach
patent: 4268777 (1981-05-01), Roosmalen
patent: 4271373 (1981-06-01), Himmelbauer et al.
"Saticon and its application to small-sized color TV cameras," Ninomiya; NHK Technical Monograph No. 25, p. 3-39, Mar. 1976.

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