Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Patent
1979-06-04
1981-08-18
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
250458, 250461R, 346 33A, G01N 2164
Patent
active
RE0307122
ABSTRACT:
A system for plotting the total luminescence spectrum of a sample comprises a spectrofluorometer including excitation and emission monochromator stages having operating wavelengths dependent on applied stepping pulses, and an X-Y plotter having a marking pen synchronized for movement along X and Y axis with changes in the wavelengths of the monochromators. A control circuit generates pulses to incrementally step the emission monochromator and horizontally scan the marking pen. A level detection circuit monitors the output of the spectroflourometer and activates the pen upon attainment of a desired contour level. Limit circuitry incorporated in the control circuit momentarily actuates the excitation monochromator following each horizontal scan to increase the excitation wavelength for the subsequent emission scan to complete the plot.
REFERENCES:
patent: 3563656 (1971-02-01), Helms
patent: 3975098 (1976-08-01), West
"Equipment of Fluoroescent Analysis" by V. N. Karalin and E. A. Korneev on pp. 165-172 of the Publishing House of the Committee for Standards, Measurements and Metering Instruments of the Council of Ministers of the U.S.S.R., Moscow, 1970.
Wampler et al., "An On-Line Spectrofluorimeter System for Rapid Collection of Absolute Luminescence Spectra", Applied Spectroscopy, vol. 25, No. 6, Nov./Dec. 1971, pp. 623-627.
Baxter Travenol Laboratories Inc.
Benziger Robert A.
Evans F. L.
Flattery Paul C.
Gerstman George H.
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