Patent · US Active

Method and apparatus for measuring a spectrum of an optical sensor, advantageously in the infrared region

US8581194B2 · kind B2 · utility

1Cited by

8References

10Claims

0Family size

Assignee

Endress+Hauser Conducta Gesellschaft fuer Mess- und Regeltechnik mbH + Co. KG · DE

Inventors

Hakon Mikkelsen · Göttingen, DE
Ralf Bernhard · Stuttgart, DE

Key dates

Filing date	Dec 13, 2011
Grant date	Nov 12, 2013
Priority date	—
Expiry date	Jan 19, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/552
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for measuring a spectrum of an optical sensor, advantageously in the infrared region, in which a light beam impinges on an optical sensor in contact with a medium to be measured, wherein the optical sensor transmits a measurement beam changed by the medium to be measured and the measurement beam is fed to a pyrodetector, which issues output signals corresponding to the spectrum. The intensity of the measurement signal is modulated before impinging on a pyrodetector. In order to provide a cost effective, vibration free measuring apparatus, which has a long lifetime, intensity modulation of measurement beam occurs by tuning-in wavelengths contained in the optical spectrum of measuring beam.

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