Measurement of luminescence
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United States of America Patent
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Oct 17, 1995
Grant Date -
N/A
app pub date -
Sep 11, 1992
filing date -
Jan 12, 1990
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Abstract
Apparatus for producing decay time weighted information (e.g. a decay time weighted image) of a luminescent sample, comprises an excitation light source arranged to illuminate the sample, means for modulating or pulsing the intensity of the excitation light in a predetermined cyclical manner, detector means for detecting photons emitted by the sample as a result of luminescence, means for storing data representative of detected photons, the stored data being weighted as a function of phase difference between detection of photons and the cyclically varying modulation, and means for producing decay time weighted information from the stored data.
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