System and apparatus for contour plotting the total luminescence

Optics: measuring and testing – Range or remote distance finding – With photodetection

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Details

250458, 250461R, 346 33A, 356 96, G01N 2152

Patent

active

040379612

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 spectrofluorometer 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
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.

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