Optical particle detector
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorGabriel Jobert
Life of this patent
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Abstract
An optical detector for particles is provided, including: a channel configured to receive a fluid including at least one particle and to receive at least one incident light ray; a detection system including a plurality of photodetectors, each photodetector being configured to receive light rays coming from the channel and diffused by the at least one particle; and an angular filtering system including a plurality of angular filtering devices each associated with a photodetector of the plurality of photodetectors, each angular filtering device being configured to angularly filter the light rays coming from the channel before reception thereof by the photodetector with which it is associated.
Claims21
An optical detector for particles, comprising:
- a channel configured to receive a fluid comprising at least one particle and to receive at least one incident light ray;
- a detection system comprising a plurality of photodetectors, each photodetector being configured to receive light rays coming from the channel and diffused by the at least one particle;
- and
- an angular filtering system comprising a plurality of angular filtering devices each associated with a photodetector of the plurality of photodetectors, each angular filtering device being configured to angularly filter the light rays coming from the channel before reception thereof by the photodetector with which it is associated, and each angular filtering device comprises an optical entry having a numerical aperture smaller than a numerical aperture of the photodetector with which said each angular filtering device is associated.
Dependencies are inferred from the claim text.