Optics: measuring and testing – By dispersed light spectroscopy – With background radiation comparison
Patent
1989-05-09
1991-06-11
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
With background radiation comparison
356328, G01J 336
Patent
active
050227556
ABSTRACT:
In a spectrophotometer having photodetectors positioned at fixed wavelengths, the photodetector is divided into three subdetectors, a main subdetector on the wavelength of interest and two background subdetectors located on each side of the main subdetector, the background subdetectors together having area equal to that of the main subdetector, the background subdetectors being connected in polarity reverse that of the main subdetector to correct for changes in background radiation.
REFERENCES:
patent: 3819945 (1974-06-01), Egan et al.
patent: 4674880 (1987-06-01), Seki
patent: 4820048 (1989-04-01), Barnard
R. K. Skogerboe et al., "A Dynamic Background Correction System for Direct Reading Spectrometry", Appl. Spectrosc. 30, 495-500 (1976).
B. E. Weekley et al., "A Versatile Electronic Computer for Photoelectric Spectrochemical Analysis", Appl. Spectrosc. 18, 21 (1964).
W. Snelleman et al., "Flame Emission Spectrometry with Repetitive Optical Scanning in the Derivative Mode", Anal. Chem. 42, 394-398 (1970).
S. A. Estee et al., "Microwave-Excited Atmospheric Pressure Helium Plasma Emission Detection Characteristics in Fused Silica Capillary Gas Chromatography", Anal. Chem. 53, 1829-1837 (1981).
G. M. Levy et al., "A Photodiode Array Based Spectrometer System for Inductively Coupled Plasma-Atomic Emission Spectrometry", Spectrochim Acta 428, 341-351 (1987).
Bolton Barbara A.
Wells Gregory J.
Cole Stanley Z.
McGraw Vincent P.
Schnapf David
Varian Associates Inc.
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