Patent · US Active

Photo-acoustic gas sensor module having light emitter and detector units

US10241088B2 · kind B2 · utility

8Cited by

27References

9Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Horst Theuss · Wenzenbach, DE
Gottfried Beer · Nittendorf, DE
Sebastian Beer · Munich, DE
Alfons Dehe · Reutlingen, DE
Franz Jost · Stuttgart, DE
Stefan Kolb · Unterschleißheim, DE
Guenther Ruhl · Regensburg, DE
Rainer Markus Schaller · Kelheim, DE

Key dates

Filing date	Apr 22, 2016
Grant date	Mar 26, 2019
Priority date	—
Expiry date	Sep 1, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/021
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A photo-acoustic gas sensor includes a light emitter unit having a light emitter configured to emit a beam of light pulses with a predetermined repetition frequency and a wavelength corresponding to an absorption band of a gas to be sensed, and a detector unit having a microphone. The light emitter unit is arranged so that the beam of light pulses traverses an area configured to accommodate the gas. The detector unit is arranged so that the microphone can receive a signal oscillating with the repetition frequency.

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