Patent · US Active

Optical sensing of measurands

US7602498B2 · kind B2 · utility

1Cited by

8References

22Claims

0Family size

Assignee

InvivoSense AS · NO

Inventors

Dag Roar Hjelme · Trondheim, NO
Arne Berg · Hønefoss, NO
Reinold Ellingsen · Trondheim, NO
Berit Falch · Trondheim, NO
Astrid Bjørkøy · Trondheim, NO
Dan Østling · Trondheim, NO

Key dates

Filing date	Mar 14, 2006
Grant date	Oct 13, 2009
Priority date	—
Expiry date	Jun 23, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/7779
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A dome-shaped chemical sensing probe comprises an optical fiber or may be mounted on an optical fiber. The probe has a chemically sensitive measuring material which exhibits a change in volume and/or a change in refractive index in the presence of a given chemical. The change in volume and/or refractive index gives a change in an optical path length through the probe which can be measured interferometrically.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.