Fraunhofer line discriminator
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United States of America Patent
Stats
-
Feb 21, 1984
Grant Date -
N/A
app pub date -
Jan 25, 1982
filing date -
Jan 25, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for the detection of fluorescence. An airborne optical system carried in an aircraft or spaceship scans a sunlit swath of terrain over a field of view defined by a selected one of the fringe rings of a Fabry-Perot etalon designed to pass a selected Fraunhofer line. A first series of detectors are disposed to sense light intensity over a predetermined arc within said selected ring. A second like series of detectors are disposed to sense light intensity just outside said selected ring. Electronic means are connected to said first and second plurality of detectors for determining the fluorescence reflected from the swath of terrain.
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Cited Art Landscape
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