US 2018/0149578 A1 · DEVICES, SYSTEMS AND METHODS FOR DETECTING PARTICLES

Abstract

A particle detector includes a housing, a light source, and a photo-responsive material. The housing includes a sample inlet and a sample outlet, and encloses a detection cavity. The light source directs irradiating light along a longitudinal axis to particles of a sample fluid flowing in the detection cavity. The photo-responsive material surrounds at least a portion of the detection cavity, and receives measurement light propagating from the particles in a plurality of measurement light paths angled relative to the longitudinal axis. The particle detector may be utilized to measure scattered light and/or light emitted due to autofluorescence. Fluids sampled may include aerosols, bio-aerosols, and liquids.

Claims31

Dependent claims

A particle detector, comprising:

a housing comprising a sample inlet and a sample outlet, and enclosing a detection cavity having a cavity length along a longitudinal axis, wherein the housing defines a flow path for a sample fluid from the sample inlet, through the detection cavity, and to the sample outlet;
a light source configured for directing irradiating light along the longitudinal axis to particles of the sample fluid flowing in the detection cavity;
and
a photo-responsive material surrounding the detection cavity along at least a portion of the cavity length, wherein the photo-responsive material is configured for receiving measurement light propagating from the particles in a plurality of measurement light paths angled relative to the longitudinal axis.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/877,991Filed 23 Jan 2018

Priority

19 Feb 2016

Published

31 May 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

G01N 15/1436
Optical arrangements: the optical arrangement forming an integrated apparatus with the sample container, e.g. a flow cell
G01N 15/0205
Investigating particle size or size distribution: by optical means
G01N 15/1459
Without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals: the analysis being performed on a…
G01N 21/53
Within a body or fluid: within a flowing fluid, e.g. smoke

Devices, systems and methods for detecting particles

Life of this patent

Devices, systems and methods for detecting particles

Life of this patent

Abstract

Claims31