Camera device with resistive target

Details Camera device with resistive target Camera device with resistive target

1976-06-21

1977-06-21

Borchelt, Archie R.

Radiant energy

Infrared-to-visible imaging

Including image tube-type detector

250334, 313180, 313388, H01J 3149

Patent

active

040313948

ABSTRACT:
In camera using resistive targets wherein a recording tube of which the target (100) made of a pyroelectric material in the example and read by a beam of electrons, permanently receives a flow of ions formed in the tube by the collision between the electrons of the beam and the atoms of a gaseous mass of which the pressure in the tube is determined by the temperature of a reservoir, the invention provides means for controlling the temperature of the reservoir (filament 03) in dependence upon the average target current which is proportional to the flow of ions in question.

REFERENCES:
patent: 2234328 (1941-03-01), Wolff
patent: 2640952 (1953-06-01), Swanson
patent: 2735019 (1956-02-01), Dewan et al.
patent: 3239605 (1966-03-01), Cholet et al.
patent: 3774043 (1973-11-01), LeCarvennec
patent: 3950645 (1976-04-01), Rotstein et al.

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