Night vision system

Details Night vision system Night vision system

1967-10-12

1978-12-26

Blum, Theodore M.

Electric lamp and discharge devices

Geiger-mueller type

H01J 3914

Patent

active

041318188

ABSTRACT:
Image detection and intensification under exceedingly low levels of illumination, as of 10.sup.-2 to 10.sup.-5 foot candles, is made possible by combining the advantages of conventional inverter image tubes with those of recently developed microchannel plate wafer tubes. Under environmental conditions necessitating an overall luminous gain of 50,000, a microchannel plate wafer tube is coupled to the output of a conventional inverter image tube permitting cone viewing by operating personnel. This is made possible by operating the microchannel plate wafer tube at low electron gain levels such that microchannel plate noise characteristics are maintained at acceptable levels. The objectives of reduced size, weight, and power consumption approximating that of a single stage of the presently used three stage night vision systems are thereby achieved. Furthermore, since external photocathode processing techniques may be used in the manufacture of the microchannel plate wafer tubes and modular construction is permitted, greater production yields are realized at significant cost savings.

REFERENCES:
patent: 2158853 (1937-10-01), Coolidge
patent: 3039017 (1962-06-01), Brown et al.
patent: 3244921 (1966-04-01), Behun
patent: 3327151 (1967-06-01), Adams et al.

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