Patent · US Active

Optical gas detector

US8947669B2 · kind B2 · utility

0Cited by

3References

7Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Sergio Nicoletti · Le Pont-de-Claix, FR
Pierre Barritault · Grenoble, FR
Mickael Brun · Eybens, FR

Key dates

Filing date	Sep 19, 2013
Grant date	Feb 3, 2015
Priority date	—
Expiry date	Sep 19, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/3504
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gas detector including: an assembly of two coaxial parabolic reflective caps having opposite concavities, and a wafer arranged in the focal plane of the two caps, at the center of this focal plane, comprising, back-to-back: a diverging light emitter directed towards the first cap and a light receiver directed towards the second cap, wherein the two caps are distant substantially by the sum of their focal distances plus the thickness of the wafer.

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