In-situ spectrophotometric probe

Details In-situ spectrophotometric probe In-situ spectrophotometric probe

1990-02-12

1992-12-15

Evans, F. L.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

356436, G01N 2100

Patent

active

051721929

ABSTRACT:
A spectrophotometric probe for in situ absorption spectra measurements comprising a first optical fiber carrying light from a remote light source, a second optical fiber carrying light to a remote spectrophotometer, the proximal ends of the first and second optical fibers parallel and coterminal, a planoconvex lens to collimate light from the first optical fiber, a reflecting grid positioned a short distance from the lens to reflect the collimated light back to the lens for focussing on the second optical fiber. The lens is positioned with the convex side toward the optical fibers. A substrate for absorbing analyte or an analyte and reagent mixture may be positioned between the lens and the reflecting grid.

REFERENCES:
patent: 1939088 (1933-12-01), Styer
patent: 3785734 (1974-01-01), Walters et al.
patent: 4369364 (1983-01-01), Kuntermann
patent: 4591268 (1986-05-01), Lew
patent: 4628872 (1971-12-01), Miranda
patent: 4678326 (1983-01-01), Kuntermann
patent: 4747959 (1988-05-01), Ho et al.
patent: 4786171 (1988-11-01), LeFrebre et al.
patent: 4907037 (1990-03-01), Boisde et al.
patent: 4917491 (1988-07-01), Ring et al.

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