Patent · US Active

Integrated photo-acoustic gas sensor module

US10451543B2 · kind B2 · utility

4Cited by

15References

22Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Thomas Mueller · Lappersdorf, DE
Horst Theuss · Wenzenbach, DE
Klaus Elian · Alteglofsheim, DE
Rainer Markus Schaller · Kelheim, DE
Stefan Kolb · Unterschleißheim, DE

Key dates

Filing date	Nov 11, 2016
Grant date	Oct 22, 2019
Priority date	—
Expiry date	Feb 23, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2224/48247
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A photo-acoustic gas sensor is disclosed. The photo-acoustic gas sensor includes a substrate, a light emitter unit supported by the substrate, the light emitter unit including a light emitter configured to emit a beam of light pulses with a predetermined repetition frequency and wavelength corresponding to an absorption band of a gas to be sensed, and a detector unit supported by the substrate, the detector unit including a microphone, wherein the beam of light pulses traverses an area intended to accommodate the gas and the microphone can receive a signal oscillating with the repetition frequency.

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