-
公开(公告)号：CA2471724C
公开(公告)日：2012-03-13
申请号：CA2471724
申请日：2002-12-20
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： BERIER FREDERIC , BOURRIAUX STEPHANE , GENET MAGALIE , VIELLEROBE BERTRAND , LOISEAU ALEXANDRE , ABRAT BENJAMIN
Abstract: Elle est prévue pour équiper l'extrémité distale d'un faisceau de fibres optiques souples (2), destinée à venir au contact d'une surface d'analyse et comprenant des moyens optiques (3) pour focaliser un signal d'excitation en un point focal dit d'excitation situé à une profondeur donnée sous la surface d'analyse et pour prélever un signal rétroémis par le point focal d'excitation qui est véhiculé en retour par ledit faisceau de fibres. Elle est caractérisée par un tube porte-optique (4) au sein duquel sont introduits d'un côté la partie terminale distale (1) du faisceau de fibres (2) et de l'autre les moyens optiques, ces derniers comprenant une lame (21) placée au contact de l'extrémité (14) du faisceau de fibres dont l'indice est proche de celui du coeur des fibres et un bloc optique de focalisation (3), un hublot de sortie (30) étant en outre prévu adapté à réaliser une adaptation d'indice de manière à s'affranchir de la réflexion parasite s'opérant sur la surface d'analyse.
-
公开(公告)号：ES2306923T3
公开(公告)日：2008-11-16
申请号：ES03815393
申请日：2003-12-12
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： BERIER FREDERIC , VIELLEROBE BERTRAND , GENET MAGALIE , LACOMBE FRANCOIS , SANTOS PEDRO
Abstract: Cabeza óptica confocal en miniatura (4) para un sistema de imagen confocal, particularmente endoscópica, al comprender dicha cabeza: - una fuente puntual (2b) que produce un haz de excitación; - medios ópticos (12, 13) adaptados particularmente para hacer converger dicho haz óptico en un punto de excitación (S) situado en un plano subsuperficial (P) con relación a la superficie de una muestra, dicho plano es perpendicular al eje óptico (A) de la cabeza óptica; y - medios de barrido de dicho punto de excitación para describir un campo de observación en dicho plano subsuperficial según dos direcciones perpendiculares de barrido, un barrido rápido en línea y un barrido lento en columna, y - medios micro sistemas mecánicos MEMs (14a-b), caracterizada porque estos medios MEMs están adaptados para desplazar en traslación según un desplazamiento escogido (Dc) por lo menos uno de los medios ópticos (12, 13) que es móvil según una dirección perpendicular a dicho eje óptico (A) de manera que se obtenga por lo menos una de dichas direcciones de barrido, y porque estos medios MEMs están adaptados par a cooperar con el medio óptico móvil (12, 13) de una manera diametralmente opuesta y alternativamente.
-
公开(公告)号：DE60321229D1
公开(公告)日：2008-07-03
申请号：DE60321229
申请日：2003-12-12
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： BERIER FREDERIC , VIELLEROBE BERTRAND , GENET MAGALIE , LACOMBE FRANCOIS , SANTOS PEDRO
Abstract: The confocal optical miniature head has optical convergers (12,13) to an excitation point (S) on a subsurface. There is a sweep system around the observation point. There is a mechanical microsystem (14a,14b) moving one of the lenses following an offset (DC) in two planes to obtain the sweep.
-
公开(公告)号：DE60209942T2
公开(公告)日：2006-11-30
申请号：DE60209942
申请日：2002-12-20
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： BERIER FREDERIC , BOURRIAUX STEPHANE , GENET MAGALIE , VIELLEROBE BERTRAND , LOISEAU ALEXANDRE , ABRAT BENJAMIN
Abstract: An optical head for equipping the distal end of a flexible optical fiber bundle, designed to be urged into contact with an analyzing surface and including optical elements for focusing an excitation signal into a so-called excitation focal point located at a specific depth beneath the analyzing surface and for sampling a signal backscattered by the excitation focal point which is carried back by the fiber bundle. The head includes an optics-holder tube wherein are inserted on one side the distal end portion of the fiber bundle and on the other optical elements, the latter including a plate placed in contact with the end of the fiber bundle whereof the index is close to that of the fiber core and a focusing optical block, an output window being further provided adapted to provide index adaptation so as to eliminate parasitic reflection occurring on the analyzing surface.
-
公开(公告)号：DK1468322T3
公开(公告)日：2005-12-05
申请号：DK02805803
申请日：2002-12-20
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： PERCHANT AYMERIC , BERIER FREDERIC , LACOMBE FRANCOIS , BOURRIAUX STEPHANE , VIELLEROBE BERTRAND , GENET MAGALIE , LE GOUALHER GEORGES , MARTI SANDRA
Abstract: Equipment includes an image guide ( 1 ) consisting of flexible optical fibers with: on the proximal end side: a source ( 2 ), angular scanning elements ( 3 ), injection elements ( 4 ) in one of the fibers, elements for splitting ( 5 ) the illuminating beam and the backscattered signal, elements for spatial filtering ( 6 ), elements for detecting ( 7 ) the signal, electronic elements ( 8 ) for controlling, analyzing and digital processing of the detected signal and display; and on the distal end side: an optical head ( 9 ) for focusing the illuminating beam exiting from the illuminated fiber. The scanning elements include a resonant line mirror (M 1 ) and a galvanometric field mirror (M 2 ) with a variable frequency and two afocal optical systems adapted to conjugate the two mirrors (M 1 , M 2 ) firstly in the field mirror (M 2 ) and the injection elements ( 4 ) in the image guide in a second step.
-
Patent Agency Ranking
公开(公告)号：FR2864631A1
公开(公告)日：2005-07-01
申请号：FR0315628
申请日：2003-12-31
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： BERIER FREDERIC , PERCHANT AYMERIC
Abstract: The method involves performing a set of acquisitions across an image guide (1). Each acquisition is performed for a given spatial offset at a distal end of the guide with respect to an optical head. Each acquired data is transformed in a scatter diagram and each diagram is readjusted with respect to a reference scatter diagram. A final image is reconstructed by superimposing readjusted diagram. Independent claims are also included for the following: (A) a device for enhancing resolution of confocal image acquired across an image guide (B) a system implementing confocal image resolution enhancing method.
-
公开(公告)号：FR2849218B1
公开(公告)日：2005-03-04
申请号：FR0216279
申请日：2002-12-20
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： BERIER FREDERIC , VIELLEROBE BERTRAND , GENET MAGALIE , LACOMBE FRANCOIS , SANTOS PEDRO
Abstract: The confocal optical miniature head has optical convergers (12,13) to an excitation point (S) on a subsurface. There is a sweep system around the observation point. There is a mechanical microsystem (14a,14b) moving one of the lenses following an offset (DC) in two planes to obtain the sweep.
-
公开(公告)号：FR2834348B1
公开(公告)日：2004-02-27
申请号：FR0116979
申请日：2001-12-28
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： BERIER FREDERIC , BOURRIAUX STEPHANE , GENET MAGALIE , VIELLEROBE BERTRAND , LOISEAU ALEXANDRE , ABRAT BENJAMIN
Abstract: An optical head for equipping the distal end of a flexible optical fiber bundle, designed to be urged into contact with an analyzing surface and including optical elements for focusing an excitation signal into a so-called excitation focal point located at a specific depth beneath the analyzing surface and for sampling a signal backscattered by the excitation focal point which is carried back by the fiber bundle. The head includes an optics-holder tube wherein are inserted on one side the distal end portion of the fiber bundle and on the other optical elements, the latter including a plate placed in contact with the end of the fiber bundle whereof the index is close to that of the fiber core and a focusing optical block, an output window being further provided adapted to provide index adaptation so as to eliminate parasitic reflection occurring on the analyzing surface.
-
29.发明专利
公开(公告)号：CA2491751A1
公开(公告)日：2004-01-29
申请号：CA2491751
申请日：2003-07-11
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： PERCHANT AYMERIC , BERIER FREDERIC , LE GOUALHER GEORGES
Abstract: L'invention concerne un procede de traitement d'image acquise au moyen d'un guide constitué par une pluralité de fibres optiques. Selon l'invention, pou r chaque fibre optique, on isole sur l'image acquise une zone correspondante à cette fibre optique, on traite localement chaque zone de façon individuelle pour corriger le flux de photon détecté dans chaque fibre optique, puis on reconstruit l'image acquise en éliminant le motif dû aux fibres optiques. Le procédé comprend également un processus d'étalonnage permettant d'obtenir, pour chaque fibre optique et à partir d'une image d'étalonnage, un taux d'injection étalon qui va servir à la reconstruction des images acquises. Le procédé comprend également en premier lieu une étape de détection des fibres à partir d'une image témoin.
-
公开(公告)号：FR2842628A1
公开(公告)日：2004-01-23
申请号：FR0209100
申请日：2002-07-18
Applicant: MAUNA KEA TECHNOLOGIES
Inventor： PERCHANT AYMERIC , LE GOUALHER GEORGES , BERIER FREDERIC
Abstract: A method for processing an image acquired through a guide consisting of a plurality of optical fibers includes, for each optical fiber, isolating on the acquired image a zone corresponding to the optical fiber, locally processing each zone individually to correct the photon flux detected in each optical fiber, then reconstructing the acquired image by eliminating the pattern caused by the optical fiber. The method also includes a sampling process for obtaining, for each optical fiber and from a sampling image, a sample injection rate which can be used for reconstructing the acquired images. The method also includes a prior step which consists in detecting the fibers from a target.
-
-
-
-
-
-
-
-
-
Search Results
57
records
(took 0.023 seconds)
