Image intensifiers having means to reduce electromagnetic interference
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United States of America Patent
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-
Jan 12, 1993
Grant Date -
N/A
app pub date -
Feb 27, 1991
filing date -
Mar 10, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The high voltage power supply of an image intensifier is operated intermittently to minimize the effect on a resulting intensified image of interference produced by the power supply, the input capacitance of the intensifier maintaining the high voltage at an acceptable level when the power supply is not operating. When used in conjunction with a video camera, the power supply may be allowed to operate only during the frame synch and/or line synch periods. A shutter may inhibit operation of the image intensifier while its power supply is operating.
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