Arrangement for fluorescence-optical measurement of concentrations of substances contained in a sample

US4703182A · kind A · utility

Assignee

• Avl Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof.Dr.Dr.h.c. Hans List · AT

Inventors

• Herbert Kroneis · Graz, AT
• Helmut Offenbacher · Graz, AT

Key dates

• Filing date: Sep 16, 1985
• Grant date: Oct 27, 1987
• Expiry date: Sep 16, 2005

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/6463
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An arrangement for the fluorescence-optical measurement of concentrations of substances contained in a sample includes a detector, a light source and a sensor element that includes a carrier element, the carrier element having an indicator layer on a portion thereof and an indicator-free surface, the carrier element being transparent to the radiation used, and having a refractive index which is greater than that of the ambient medium at the indicator-free surface, the light space being positioned such that the transmission of light from the light source to the indicator layer, and from there to the detector, is achieved, at least partially, by total reflection in the carrier element.