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1. (WO2002017219) MEASURING THE VELOCITY OF SMALL MOVING OBJECTS SUCH AS CELLS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2002/017219 International Application No.: PCT/US2001/026485
Publication Date: 28.02.2002 International Filing Date: 24.08.2001
Chapter 2 Demand Filed: 04.02.2002
IPC:
G01N 15/14 (2006.01) ,G01P 5/26 (2006.01) ,G06T 7/20 (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
10
Investigating individual particles
14
Electro-optical investigation
G PHYSICS
01
MEASURING; TESTING
P
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
5
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
26
by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7
Image analysis, e.g. from bit-mapped to non bit-mapped
20
Analysis of motion
Applicants:
AMNIS CORPORATION [US/US]; 2505 Third Avenue Suite 210 Seattle, WA 98121, US
Inventors:
BASIJI, David; US
ORTYN, William; US
Agent:
ANDERSON, Ronald; Law Offices of Ronald M. Anderson 600 108th Avenue N.E., Suite 507 Bellevue, WA 98004, US
Priority Data:
60/228,07625.08.2000US
Title (EN) MEASURING THE VELOCITY OF SMALL MOVING OBJECTS SUCH AS CELLS
(FR) MESURE DE LA VITESSE DE PETITS OBJETS MOBILES COMME LES CELLULES
Abstract:
(EN) Frequency domain velocity measurements and time domain velocity measurements are made using light from cells or other objects (18a). An optical grating (46) is used to modulate the light from an object so that it has a frequency proportional to the velocity of the object. Depending upon the embodiment, the pitch of the optical grating is uniform or varying. The modulated light is detected and various signal processing techniques, such as a Fast Fourier Transform function or processing in the time domain, are used to determinate an indication of the velocity of the object. Preferably, the indication of the velocity is applied in producing a timing signal employed for synchronization of an image of the object and an detector signal in an optical analysis system that uses a time delay integration detector to determine characteristics of the object in response to light from the object.
(FR) L'invention concerne la mesure de vitesse dans le domaine fréquentiel et temporel à partir de la lumière de cellules et d'autres objets (18a). Un réseau de diffraction optique (46) module la lumière émanant d'un objet pour que la fréquence soit proportionnelle à la vitesse de l'objet. Selon une variante, le pas du réseau est constant ou variable. La lumière modulée est décelée et diverses techniques de traitement des signaux (par exemple, transformée de Fourier rapide ou traitement dans le domaine temporel) permettent de fournir une indication de la vitesse de l'objet, De préférence, l'indication de vitesse est appliquée à la fourniture d'un signal de synchronisation d'image de l'objet et d'un signal de détecteur dans un système d'analyse optique à détecteur d'intégration de retard, ce qui permet de déterminer les caractéristiques de l'objet en réponse à la lumière émanant de l'objet.
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Designated States: AU, CA, JP
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
Publication Language: English (EN)
Filing Language: English (EN)