Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Patent
1996-11-25
1998-02-24
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
2504611, G01J 3443, G01N 2164
Patent
active
057216134
ABSTRACT:
A fluorescence spectrometer comprises a light source with a flashlamp (2), means (9) for selecting an excitation wavelength, a sample cuvette (11), means (16) for spectrally separating the radiation emitted from the sample cuvette (11), and detector means (18) for detecting the spectrally separated radiation. The detector means (18) comprise an avalanche photodiode, preferably an array of avalanche photodiodes. The use of a flashlamp in combination with avalanche photodiodes ensures high sensitivity in the determination of low sample concentrations, in particular when the sample composition changes over time as in liquid chromatography.
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Doerr Thomas
Linowski Clemens
Evans F. L.
Hewlett -Packard Company
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