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US 2021/0404942 A1Published application
Method and device for detection and/or measurement of impurities in droplets
AssigneePlair SA
InventorsDenis Kiselev, Fabio Capela
Life of this patent
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AssigneePlair SA
InventorsDenis Kiselev, Fabio Capela
Estimating the term…
The present relates to a measurement device (1) for the detection and/or measurement of particles in a fluid, the measurement device comprising a fluid source (11) for producing a flow of fluid (111) along a fluid flow path, a first laser source (12) positioned for emitting a first laser beam (120) of laser light in a measurement volume of the fluid flow path for light scattering; a scattered light detecting means (13) for detecting a presence of a particle in the fluid flow path through detection and measurement of laser beam light scattered on different angles by said particle, wherein it further comprises a second laser source (14) positioned for emitting a second laser beam (140) of laser light in said measurement volume of the fluid flow path for Raman and fluorescence excitation; a Raman and fluorescence detecting means (15) for detecting a Raman scattering signal emitted by the fluid and a Fluorescence signal emitted by said particle upon excitation by said second laser beam (140).
Measurement device (1) for the detection and/or measurement of particles in a fluid, the measurement device comprising:
Measurement device according to any of the preceding claims, further comprising a first lens set (16) for collecting a first laser light (121) scattered in the measurement volume by particles contained in the flow of fluid (111).
Measurement device according to any of the preceding claims, wherein the scattered light detecting means (13) is a multipixel light scattering detector.
Measurement device according to any of the preceding claims, further comprising a second lens set (17) for collecting the Raman signal emitted by the fluid molecule and fluorescence signal emitted by the particle upon excitation by said laser beam (120, 140).
Measurement device according to any of the preceding claims, wherein the Raman and fluorescence detecting means (15) is a photo-detector positioned for the detection of laser light (141) collected by the second lens set (17).
Measurement device according to one of the preceding claims, wherein said laser source (12) is configured for emitting a continuous laser beam (120).
Measurement device according to one of the preceding claims, wherein said laser source is configured for emitting a laser beam (120) having a wave length of 200 to 800 nm
Measurement device according to one of the preceding claims, wherein said laser source (12) is configured for emitting a laser beam (120) having an emission spectrum up to tens of nm.
Measurement device according to one of the preceding claims, wherein said laser source (12) is configured for emitting a laser beam (120) having an output optical power range from few mW up to few W
Measurement device according to one of the preceding claims, further comprising a second laser source (14) positioned for emitting a second laser beam (140) of laser light in said measurement volume of the fluid flow path for Raman and fluorescence excitation while the laser source (12) is for light scattering only.
Measurement method for the detection and/or analysis of fluid-borne particles, comprising the steps of:
Dependencies are inferred from the claim text.