Image intensifier tube having an internal alkali baffle

Details Image intensifier tube having an internal alkali baffle Image intensifier tube having an internal alkali baffle

1981-03-27

1983-01-25

Demeo, Palmer C.

Electric lamp and discharge devices

Secondary emission prevention

Nonemissive material

313181, H01J 3150, H01J 4006

Patent

active

043705863

ABSTRACT:
An image intensifier tube includes a substantially cylindrical envelope having a photoemissive cathode at one end and a phosphor screen at the other end. A tubulation extends through the envelope wall for introducing a constituent of the cathode into the envelope. A baffle ring comprising an insulative material is located within the tube adjacent to the tubulation. The baffle ring forms an interior annular chamber with the cylindrical envelope. An annular passage is formed between the baffle ring and an inwardly-extending portion of the envelope.

REFERENCES:
patent: 2244720 (1941-06-01), Massa et al.
patent: 2752519 (1956-06-01), Ruedy
patent: 3894258 (1975-07-01), Butterwick
patent: 4157484 (1979-06-01), Stowe et al.
patent: 4173727 (1979-11-01), Vine
patent: 4198106 (1980-04-01), Stowe et al.
patent: 4315184 (1982-02-01), Santilli et al.

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