Optical sensor for determining at least one parameter in a liqui

Details Optical sensor for determining at least one parameter in a liqui Optical sensor for determining at least one parameter in a liqui

1989-07-28

1992-05-19

Hill, Jr., Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

422 8207, 435288, 435291, 435817, 128634, 385 12, G01N 2100, C12M 140, C12M 134, G02B 602

Patent

active

051146762

ABSTRACT:
In order to improve the response behavior of an optical sensor for determining at least one parameter in a liquid or gaseous sample, the sensor including a substrate which is provided with carrier particles and a fluorescent indicator immobilized thereon, the substrate is configured as a polymer film transparent to both excitation and emission radiation, and the individual carrier particles carrying the fluorescent indicator in immobilized form are bonded with only part of their surface to a thin layer of a thermoplastic material adhering to the polymer film and assume thermosetting properties after the carrier particles have been pressed in, whereas the other part of the surface of the carrier particles extend into an optically transparent hydrogel layer which covers the thermoplastic layer and in which the carrier particles are anchored mechanically. Such sensors may easily be attached to the end of an optical waveguide and may be made in any size by a simple punching operation.

REFERENCES:
patent: 4721677 (1986-01-01), Clark, Jr.
patent: 4849172 (1989-07-01), Yafuso et al.
patent: 4886338 (1989-12-01), Yafuso et al.
patent: 4954318 (1990-09-01), Yafuso et al.
Webster, Medical Instrumentation, Application and Design, pp. 538-540, 1978.

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