Fluorescence sensing device

Details Fluorescence sensing device Fluorescence sensing device

1997-05-13

1999-06-29

Hantis, K P

Optics: measuring and testing

By shade or color

With color transmitting filter

422 8207, 2504581, 436172, G01N 2125

Patent

active

059176059

ABSTRACT:
A fluorescence sensing device for determining the presence or concentration of an analyte in a liquid or gaseous medium is constructed of a fiber optic plate comprising optical fibers having relatively small numerical apertures. The fiber optic plate is positioned on a photodetector and has a layer of analyte permeable fluorescent matrix or coated waveguide material on its top surface. The fluorescent matrix or waveguide coating contains indicator molecules whose fluorescence is affected by the local presence of analyte. A light source emits light into the fluorescent matrix in a direction generally parallel to the top surface of the fiber optic plate. Upon absorbing light from the light source, indicator molecules in the fluorescent matrix emit fluorescent light which is transmitted through the fiber optic plate to the photodetector.

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patent: 5543870 (1996-08-01), Blanchard
patent: 5600751 (1997-02-01), Peli
Colvin, Jr., A.E., et al., "A Novel Solid-State Oxygen Sensor," Johns Hopkins APL Technical Digest, vol. 17, No. 4, pp. 377-385 (1996).

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