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1. WO2020109964 - SENSOR FOR PARTICLE DETECTION

Publication Number WO/2020/109964
Publication Date 04.06.2020
International Application No. PCT/IB2019/060121
International Filing Date 25.11.2019
IPC
G01N 15/06 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
06Investigating concentration of particle suspensions
CPC
G01N 15/0211
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
02Investigating particle size or size distribution
0205by optical means, e.g. by light scattering, diffraction, holography or imaging
0211Investigating a scatter or diffraction pattern
G01N 15/06
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
06Investigating concentration of particle suspensions
G01N 15/1459
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
10Investigating individual particles
14Electro-optical investigation, e.g. flow cytometers
1456without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals
1459the analysis being performed on a sample stream
G01N 2015/0046
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
0042Investigating dispersion of solids
0046in gas, e.g. smoke
G01N 2015/0693
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
06Investigating concentration of particle suspensions
0693by optical means, e.g. by integrated nephelometry
G01N 2015/1486
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
10Investigating individual particles
14Electro-optical investigation, e.g. flow cytometers
1486Counting the particles
Applicants
  • 3M INNOVATIVE PROPERTIES COMPANY [US]/[US]
Inventors
  • MEIS, Michael A.
  • GALE, Brian D.
Agents
  • WEBER, Kevin W.
  • FLORCZAK, Yen Tong,
  • BLANK, Colene H.,
  • HARTS, Dean M. ,
  • LEVINSON, Eric D.,
  • MAKI, Eloise J.,
  • NOWAK, Sandra K.,
  • RINGSRED, Ted K.,
Priority Data
62/773,82630.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SENSOR FOR PARTICLE DETECTION
(FR) CAPTEUR DESTINÉ À LA DÉTECTION DE PARTICULES
Abstract
(EN)
The present disclosure describes devices for detecting fine and ultrafine particulate matter. The devices may include at least one optical sensor configured at an angle of greater than 90 degrees from a direction of air flow, such that particulate matter is carried away from the sensor. In some examples, a device includes a housing, a light source and a light trap. The light source may be disposed within the proximal end of the housing and can be configured to direct a beam of light toward the distal end of the housing. The light trap may be disposed within the housing to reduce backscatter from the beam of light.
(FR)
La présente invention concerne des dispositifs permettant de détecter des matières particulaires fines et ultrafines. Les dispositifs peuvent comprendre au moins un capteur optique configuré à un angle supérieur à 90 degrés par rapport à une direction d'écoulement d'air, de telle sorte que la matière particulaire est transportée à distance du capteur. Dans certains exemples, un dispositif comprend un boîtier, une source de lumière et un piège à lumière. La source de lumière peut être disposée dans l'extrémité proximale du boîtier et peut être conçue pour diriger un faisceau lumineux vers l'extrémité distale du boîtier. Le piège à lumière peut être disposé dans le boîtier afin de réduire la rétrodiffusion à partir du faisceau lumineux.
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