Pick-up tubes

Details Pick-up tubes Pick-up tubes

1975-01-06

1976-10-12

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313371, 313478, H01J 3138, H01J 2989

Patent

active

039860701

ABSTRACT:
A photo-conductive target pick-up tube has a vacuum sealed envelope housing a tubular anode electrode on the gun cathode side of the target. The anode electrode is roughened on its inner surface to provide light scattering from a lamp which is mounted in a cavity protruding into the envelope but which cavity is sealed from the vacuum inside the envelope. The lamp is mounted on the longitudinal axis of the axis so as to provide an artificial dark current which tends to reduce build-up and decay lag at low light level operating conditions.

REFERENCES:
patent: 2607900 (1952-08-01), Schulte
patent: 3114068 (1963-12-01), Shortridge
patent: 3601651 (1971-08-01), Neis
patent: 3628076 (1971-12-01), Weijland et al.
bailey, New Lead-Oxide Tubes; Sound Vision Broadcasting; Great Britain, vol. 11, No. 2, Summer, 1970; pp. 19-21.

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