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1. (WO2017090017) PORTABLE LIGHT-SCATTERING SPECTROMETER AND METHOD FOR DETERMINING THE TIME AVERAGE AUTOCORRELATION FUNCTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/090017 International Application No.: PCT/IB2016/057168
Publication Date: 01.06.2017 International Filing Date: 28.11.2016
IPC:
G01N 15/02 (2006.01) ,G01J 3/44 (2006.01) ,G01N 21/51 (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
02
Investigating particle size or size distribution
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28
Investigating the spectrum
44
Raman spectrometry; Scattering spectrometry
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
47
Scattering, i.e. diffuse reflection
49
within a body or fluid
51
inside a container, e.g. in an ampoule
Applicants:
UNIVERSIDADE FEDERAL DE MINAS GERAIS [BR/BR]; Av. Antônio Carlos, 6627, Pampulha 31270-901 Belo Horizonte, BR
Inventors:
LADEIRA, Luiz Orlando; BR
DE MESQUITA, Oscar Nassif; BR
GOMES, Livia Siman; BR
Agent:
GORI, Ana Luiza de Castro Leite; BR
Priority Data:
BR102015029829327.11.2015BR
BR102016009765729.04.2016BR
Title (EN) PORTABLE LIGHT-SCATTERING SPECTROMETER AND METHOD FOR DETERMINING THE TIME AVERAGE AUTOCORRELATION FUNCTION
(FR) SPECTROMÈTRE PORTATIF À ÉTALEMENT DE LUMIÈRE ET PROCÉDÉ DE DÉTERMINATION DE LA FONCTION D'AUTOCORRÉLATION TEMPORELLE MOYENNE
(PT) ESPECTRÔMETRO PORTÁTIL DE ESPALHAMENTO DE LUZ E PROCESSO PARA DETERMINAÇÃO DA FUNÇÃO DE AUTOCORRELAÇÃO TEMPORAL MÉDIA
Abstract:
(EN) The present invention relates to a portable light-scattering spectrometer (EPEL) which uses photon correlation to measure and characterise the dynamic scattering of light in colloidal emulsions. The invention also relates to a method for determining the time average autocorrelation function. The device proposed by the present invention comprises an optomechanical system with a special configuration including at least one source of coherent light, lenses, a beamsplitter, an optical element that reflects and transmits the beams from the light source, a polarising element and other elements that achieve superior characteristics such as reduced size, portability, ease of handling, robustness, shorter time for carrying out diffusion dynamics measurements, possibility of use of the open device in a lighted environment without the need to stop the light from the outer environment from falling on the sample, and in various environments; good resistance to vibrations and the possibility to orient the optomechanical system in all directions in space. The EPEL can be used in laboratories and also for in situ determination of diffusion dynamics, including in immunological assays.
(FR) La présente invention concerne un spectromètre portatif à diffusion de lumière (EPEL) utilisant la corrélation de photons pour mesurer et caractériser la diffusion dynamique de lumière dans des émulsions colloïdales. L'invention concerne également un procédé de détermination de la fonction d’autocorrélation temporelle moyenne. Le dispositif proposé dans la présente invention possède un système mécano-optique doté d’une configuration spéciale présentant au moins une source de lumière cohérente, des lentilles, un diviseur de faisceau, un élément optique reflétant et transmettant les faisceaux en provenance de la source de lumière, un élément à propriété de polarisation et d'autres éléments permettant d’obtenir des caractéristiques supérieures, telles que : taille réduite ; portabilité ; facilité de manipulation ; robustesse ; réalisation de mesures de dynamique diffusive en un temps réduite ; possibilité d’utilisation ouvert dans un environnement éclairé, sans nécessité de bloquer la lumière ambiante extérieure sur l’échantillon et à des emplacements divers ; bonne tolérance aux vibrations, outre le possibilité de configuration du système mécano-optique dans toutes les orientations spatiales. L’EPEL peut être utilisé dans des laboratoires ainsi que pour des déterminations de dynamique diffusive in situ, y compris pour les immuno-essais.
(PT) A presente invenção trata de um espectrômetro portátil de espalhamento de luz (EPEL) que utiliza a correlação de fótons para medir e caracterizar espalhamento dinâmico de luz em emulsões coloidais. Também trata de um processo para determinação da função de autocorrelação temporal média. O dispositivo proposto na presente invenção possui um sistema mecano-óptico com uma configuração especial que compreende pelo menos uma fonte de luz coerente, lentes, divisor de feixe, elemento óptico que reflete e transmite os feixes provenientes da fonte de luz, elemento com propriedade de polarização e outros elementos que propiciam características superiores tais como: tamanho reduzido; portátil; fácil manuseio; robusto; realiza medições de dinâmica difusiva em tempo reduzido; pode ser utilizado aberto em ambiente iluminado, sem necessidade de bloquear a luz ambiente externa sobre a amostra e em locais diversos; boa tolerância a vibrações, além de possibilitar a configuração do sistema mecano-óptico em todas as orientações espaciais. O EPEL poderá ser utilizado em laboratórios e também para determinações de dinâmica difusiva "in situ", inclusive para imuno-ensaios.
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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, JP, KE, KG, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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: Portuguese (PT)
Filing Language: Portuguese (PT)