Patent ID: 11885731
Assignee: CPE LYON FORMATION CONTINUE ET RECHERCHE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical particle detector comprising:
at least one channel configured to receive a fluid carrying at least one particle, and across which light rays are configured to pass such that said light rays are partially scattered by the at least one particle,
a plurality of photodetectors configured to receive said scattered light rays,
wherein said detector comprises at least one optical waveguide comprising at least a first part and a second part separated from one another by the channel, the first part of the waveguide having a first entrance and a first exit opening out onto the channel and the second part of the waveguide having a second entrance and a second exit opening out onto the channel, said first and second parts being arranged in such a way that the first entrance faces the second exit and the second entrance faces the first exit, the optical waveguide being configured to:
collect, at least at one entrance of the waveguide from among the first and second entrances, light rays that were not scattered by the at least one particle and having crossed the channel, and to
reinject said unscattered light rays into the channel through at least one exit of the waveguide from among the first and second exits.