Optical particle detector and method of manufacturing the same

US11885731B2 · kind B2 · utility

Assignees

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR
• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR
• CPE LYON FORMATION CONTINUE ET RECHERCHE · FR
• ECOLE CENTRALE DE LYON · FR
• INSTITUT NATIONAL DES SCIENCES APPLIQUÉES DE LYON · FR
• UNIVERSITE CLAUDE BERNAD LYON 1 · FR

Inventors

• Salim Boutami · Grenoble, FR
• Maryse Fournier · Grenoble, FR
• Gabriel JOBERT · Grenoble, FR
• Christian Seassal · Val-de-Reuil, FR
• Cécile Jamois · Caluire, FR

Key dates

• Filing date: Sep 21, 2021
• Grant date: Jan 30, 2024
• Expiry date: Dec 13, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2015/1493
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An optical particle detector including at least one channel intended to receive a fluid carrying at least one particle, and across which light rays are intended to pass such that the light rays are partially scattered by the at least one particle, a plurality of photodetectors capable of receiving said scattered light rays, wherein the detector includes at least one optical waveguide configured to collect, at least at one entrance of the waveguide, light rays that were not scattered by the at least one particle and having crossed the channel, and to reinject the unscattered light rays into the channel through at least one exit of the waveguide.