Patent · US Active

Gas sensors using non-dispersive infrared materials

US12158418B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

LUMILEDS LLC · US

Inventors

Florent Monestier · Aachen, DE
Franklin Chiang · Vancouver, US
Hisashi Masui · San Jose, US

Key dates

Filing date	Nov 28, 2022
Grant date	Dec 3, 2024
Priority date	—
Expiry date	Aug 22, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG01N2201/068
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gas sensing system measures a concentration of a gas sample having an absorption peak at a first wavelength. An emitter emits light having a spectrum that includes at least the first wavelength. A sensor detects at least some of the light emitted by the emitter. A porous scattering material is substantially transparent at the first wavelength and scatters at least some of the light. A surface of the porous scattering material opposing the emitter and the sensor has a depression. The emitter and the sensor are laterally and vertically separated by a separator filling the depression. The separator specularly or diffusively reflects the light emitted by the emitter.

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