Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Patent
1983-08-19
1988-02-09
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
2504581, 356301, 356324, G01N 2164, G01N 2165
Patent
active
RE0325988
ABSTRACT:
A fluorescence spectrophotometer in which the optical system for the excitation monochromator includes an arrangement for forming an image of the exit slit of the monochromator adjacent a first surface of the sample being evaluated and for forming an aperture image adjacent a second surface of the sample. Fluorescence from the sample is directed to an emission monochromator which likewise has an arrangement for forming an image of the emission monochromator's entrance slit adjacent a third surface of the sample and for forming an aperture image adjacent a fourth surface. The optical components are arranged such that the images of the slits lie in a single plane defined by the axial rays of the excitation and fluorescence beams, and in several advantageous arrangements the slit images are oriented at 90.degree. from the slits themselves. The intensity of the output signal may be further increased by locating mirrors behind the sample holder to direct the light back through the sample for a second pass.
REFERENCES:
patent: 2940355 (1960-06-01), Cary
patent: 3191488 (1965-06-01), Eisner
patent: 3204105 (1965-08-01), Robinson
patent: 3359056 (1967-12-01), Offner
patent: 3414354 (1968-12-01), Siegler, Jr.
patent: 3516744 (1970-06-01), Hinman et al.
patent: 3520614 (1970-07-01), Goldstein
patent: 3542481 (1970-11-01), Slomba
patent: 3545869 (1970-12-01), Auphan
patent: 3556659 (1971-01-01), Hawes
patent: 3606547 (1971-09-01), Iwahashi
patent: 3678272 (1972-07-01), Jasny
patent: 3748040 (1973-07-01), Hawes
patent: 3825555 (1974-08-01), Ohnishi
patent: 3825762 (1974-07-01), White
patent: 3975098 (1976-08-01), West
patent: 4076420 (1978-02-01), De Maeyer et al.
Oldenberg; "On the Intensity of Illumination in Spectrographs" JOSA, vol. 22 #8, Aug. 1932, pp. 441-455.
Richardson; "An Image Slicer for Spectrographs" Publications of The Astronomical Society of the Pacific (PASP) vol. 78 #pp. 436 & 437.
"The SPF-1000", Bulletin 2423-1, American Instrument Co., Inc., Silver Springs, Maryland 20910, printed in U.S.A. Feb. 1968.
Brochure by Farrand Optical Co. 1974.
"Analytical Biochemistry" vol. 16, pp. 438-449, 1966.
Cary Instruments brochure 1968.
"Spectroscopy" pp. 290-293, Oct. 10, 1974.
"JASCO-Report" vol. 11, No. 10, Oct. 25, 1974.
Diagram entitled "FP-4 Fluoresence Spectrophotometer" (undated).
"Model FP-4 Fluorescence Spectrophotometer," Japan Spectroscopic Co. Ltd. Feb. 1974.
Sheet entitled "JASCO MPF-4 Optional Accessories" (undated).
Brochure entitled "Model FP-3 Hitachi Fluorescence Spectrophotometer" (undated).
"Fluorescence Lifetimes: Theory, Instrumentation, and Application of Nanosecond Fluorometry"; Spencer pp. 104-122; 1970.
McGraw Vincent P.
Robinson, Jr. Lee C.
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