Search International and National Patent Collections

1. (WO1999005698) NIGHT VISION DEVICE WITH TIME-VARYING VOLTAGE TO PHOTOCATHODE

Pub. No.:    WO/1999/005698    International Application No.:    PCT/US1998/015357
Publication Date: Fri Feb 05 00:59:59 CET 1999 International Filing Date: Thu Jul 16 01:59:59 CEST 1998
IPC: H01J 29/98
H01J 31/50
Applicants: LITTON SYSTEMS, INC.
Inventors: SALDANA, Michael, R.
Title: NIGHT VISION DEVICE WITH TIME-VARYING VOLTAGE TO PHOTOCATHODE
Abstract:
A night vision device (10) which applies a time-varying voltage to the photocathode (20) of the device (10) 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 (20), thus increasing reliability for the night vision device (10) while preserving image resolution.