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1. (WO2018166851) LASER SENSOR MODULE FOR PARTICLE DETECTION WITH OFFSET BEAM
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/166851 International Application No.: PCT/EP2018/055524
Publication Date: 20.09.2018 International Filing Date: 07.03.2018
IPC:
G01N 15/06 (2006.01) ,G01N 15/14 (2006.01) ,G01S 17/02 (2006.01) ,G01S 17/88 (2006.01) ,G01S 7/481 (2006.01) ,G01S 7/491 (2006.01) ,G01S 17/95 (2006.01) ,G01B 9/02 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
06
Investigating concentration of particle suspensions
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
15
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
10
Investigating individual particles
14
Electro-optical investigation
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02
Systems using the reflection of electromagnetic waves other than radio waves
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88
Lidar systems, specially adapted for specific applications
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7
Details of systems according to groups G01S13/, G01S15/, G01S17/127
48
of systems according to group G01S17/58
481
Constructional features, e.g. arrangements of optical elements
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7
Details of systems according to groups G01S13/, G01S15/, G01S17/127
48
of systems according to group G01S17/58
491
Details of non-pulse systems
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88
Lidar systems, specially adapted for specific applications
95
for meteorological use
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9
Instruments as specified in the subgroups and characterised by the use of optical measuring means
02
Interferometers
Applicants: KONINKLIJKE PHILIPS N.V.[NL/NL]; High Tech Campus 5 5656 AE Eindhoven, NL
Inventors: VAN DER LEE, Alexander, Marc; NL
SPRUIT, Johannes, Hendrikus, Maria; NL
JUTTE, Petrus, Theodorus; NL
Agent: MUELLER, Mr. Frank; NL
DE HAAN, Poul, Erik; NL
Priority Data:
17160985.215.03.2017EP
Title (EN) LASER SENSOR MODULE FOR PARTICLE DETECTION WITH OFFSET BEAM
(FR) MODULE DE CAPTEUR LASER POUR DÉTECTION DE PARTICULES AVEC FAISCEAU DÉCALÉ
Abstract:
(EN) The invention describes a laser sensor module (100) for detecting a particle density of particles (10) with a size of less than 20 μm, preferably less than 10 μιη in a fluid, wherein the laser sensor module (100) comprises a laser (111), a detector (121) and a mirror (160), wherein the laser (111) is arranged to emit a laser beam (112) to the mirror (160), wherein the mirror (160) is arranged to dynamically redirect the laser beam (112), wherein a direction of the redirected laser beam (112) defines an optical axis (51), wherein the detector (121) is arranged to determine a self mixing interference signal of an optical wave within a laser cavity of the laser (111), the self mixing interference signal being generated by laser light of the laser beam (112) reflected by at least one of the particles (10), wherein a geometric relation between the laser (111) and the mirror (160) is arranged such that the self mixing interference signal is shifted to higher frequencies, wherein the laser sensor module (100) is arranged such that an angle a between trajectories of particles (10) at rest with respect to a velocity vector (55) of the redirected laser beam (112) normal to the optical axis (51) is at least a threshold angle of 2°. The invention further relates to a particle detector (200) comprising such a laser sensor module (100) and a mobile communication device (190) comprising such a laser sensor module (100) or particle detector (200). The invention further relates to a method of measuring a particle density of small particles. The invention finally relates to a corresponding computer program product.
(FR) La présente invention concerne un module de capteur laser (100) pour détecter une densité de particules (10) ayant une taille inférieure à 20 µm, de préférence inférieure à 10 µm dans un fluide, le module de capteur laser (100) comprenant un laser (111), un détecteur (121) et un miroir (160), le laser (111) étant agencé pour émettre un faisceau laser (112) vers le miroir (160), le miroir (160) étant agencé pour rediriger dynamiquement le faisceau laser (112), une direction du faisceau laser (112) redirigé définissant un axe optique (51), le détecteur (121) étant agencé pour déterminer un signal d'interférence d’automélange d'une onde optique dans une cavité laser du laser (111), le signal d'interférence d’automélange étant généré par une lumière laser du faisceau laser (112) réfléchie par au moins une des particules (10), une relation géométrique entre le laser (111) et le miroir (160) étant agencée de sorte que le signal d'interférence d’automélange soit décalé vers des fréquences plus élevées, le module de capteur laser (100) étant agencé de sorte qu'un angle a entre des trajectoires de particules (10) au repos par rapport à un vecteur de vitesse (55) du faisceau laser redirigé (112) normal par rapport à l'axe optique (51) soit au moins un angle de seuil de 2°. L'invention concerne en outre un détecteur de particules (200) comprenant un tel module de capteur laser (100) et un dispositif de communication mobile (190) comprenant un tel module de capteur laser (100) ou un détecteur de particules (200). L'invention concerne en outre un procédé de mesure d'une densité de particules de petites particules. L'invention concerne finalement un produit de programme informatique correspondant.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)