Night vision device with voltage to photocathode having a rectif

Details Night vision device with voltage to photocathode having a rectif Night vision device with voltage to photocathode having a rectif

1997-07-28

1999-08-24

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313103R, H01J 4014

Patent

active

059427477

ABSTRACT:
A night vision device which applies a time-varying voltage to the photocathode of the device during periods of high average light intensity from a scene being viewed. The purpose of applying this time-varying voltage during periods of high average light intensity is to reduce the average current through the photocathode, thus increasing reliability for the night vision device while preserving image resolution.

REFERENCES:
patent: 4037132 (1977-07-01), Hoover
patent: 4442349 (1984-04-01), Blom et al.
patent: 4935616 (1990-06-01), Scott
patent: 5146077 (1992-09-01), Caserta et al.

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