Color-picture analyzing apparatus for continuously switching-on green lamp and for alternatively switching-on blue and red-purpose lamps
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United States of America Patent
Stats
-
Apr 14, 1987
Grant Date -
N/A
app pub date -
Jan 4, 1985
filing date -
Jan 12, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A color-picture analyzing apparatus includes a blue, green, and red-purpose lamps, preferably, fluorescent lamps; a sharp-cut filter in front of the red-purpose lamp for solely passing the red radiation; an infrared-cut filter interposed between a document having a color-picture to be analyzed and a reading sensor for cutting an infrared zone radiation; a first circuit for continuously switching on the green lamps; and a second circuit for alternatively switching on the blue and the red-purpose lamps. The red-purpose lamp can provide wide radiations covering the red spectral zone. It may be a cool white fluorescent lamp having a short afterglow time.
First Claim
Family
International Classification(s)
Cited Art Landscape
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