Optics: measuring and testing – By dispersed light spectroscopy – With raman type light scattering
Patent
1991-03-20
1993-03-16
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With raman type light scattering
2504581, 356417, G01N 2164, G01N 2165
Patent
active
051949130
ABSTRACT:
A dual fiber forward scattering optrode for Raman spectroscopy with the remote ends of the fibers in opposed, spaced relationship to each other to form a analyte sampling space therebetween and the method of measuring Raman spectra utilizing same. One optical fiber is for sending an exciting signal to the remote sampling space and, at its remote end, has a collimating microlens and an optical filter for filtering out background emissions generated in the fiber. The other optical fiber is for collecting the Raman scattering signal at the remote sampling space and, at its remote end, has a collimating microlens and an optical filter to prevent the exciting signal from the exciting fiber from entering the collection fiber and to thereby prevent the generation of background emissions in the collecting fiber.
REFERENCES:
patent: 4781458 (1988-11-01), Angel et al.
patent: 4853547 (1989-08-01), Bach
patent: 4989942 (1991-02-01), Koenigsberg et al.
Benner et al, Conference: Fiber Optics Advances in Research and Development, Kingston, R.I., USA (19-23 Jun. 1978) pp. 625-640.
Bello et al, Applied Spectroscopy, vol. 44, No. 1, Jan. 1990, pp. 63-69.
Myrick et al, Applied Opstics, vol. 29, No. 9, 20 Mar. 1990, pp. 1333-1344.
Angel Stanley M.
Myrick Michael L.
Evans F. L.
Gaither Roger S.
Moser William R.
Sartorio Henry P.
The United States of America as represented by the United States
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