Time domain Fraunhofer line discriminator
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United States of America Patent
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-
Jan 29, 1991
Grant Date -
N/A
app pub date -
Apr 17, 1989
filing date -
Apr 17, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A scanning spectrometer scans the spread spectrum of sunlight and low level luminescence or fluorescence past a slit to provide the spectrum scanned in the time domain. An image intensifier responsive to the light energy passing through the slit is gated on when Fraunhofer lines are coincident with the slit. A photodetector responsive to the image intensifier detects the intensified total energy within each Fraunhofer line.
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