METHOD AND SYSTEM FOR SUPER-RESOLUTION OF CONFOCAL IMAGES ACQUIRED THROUGH AN IMAGE GUIDE, AND DEVICE USED FOR IMPLEMENTING SUCH A METHOD

    公开(公告)号:IL176372D0

    公开(公告)日:2006-10-05

    申请号:IL17637206

    申请日:2006-06-18

    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.

    74.
    发明专利
    未知

    公开(公告)号:FR2865370B1

    公开(公告)日:2006-04-28

    申请号:FR0400582

    申请日:2004-01-22

    Abstract: The system has a deformable mirror placed between a Michelson interferometer and the eye, to compensate geometric aberrations of the eye. A focalization regulating unit regulates focalization of Shack-Hartmann analyzer, and forces the mirror to bend in order to conjugate an input light source and a detector with a predetermined depth point in retina. The unit is controlled in synchronism with scanning of tomography arrangement. An independent claim is also included for an in vivo tomography method for human retina.

    Confocal imaging equipment in particular for endoscope

    公开(公告)号:IL162706D0

    公开(公告)日:2005-11-20

    申请号:IL16270602

    申请日:2002-12-20

    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.

    TOMOGRAPHIE A HAUTE RESOLUTION LATERALE ET AXIALE DE LA RETINE

    公开(公告)号:CA2553742A1

    公开(公告)日:2005-09-01

    申请号:CA2553742

    申请日:2005-01-21

    Abstract: Système de tomographie in vivo à haute résolution axiale et latérale de la rétine humaine, comprenant : - un interféromètre de Michelson, réalisant un montage de tomographie par interférence OCT plein champ avec un balayage en Z, - de moyens d~optique adaptative corrigeant les fronts d~onde en provenance et à destination de l~.oelig.il, comprenant une source de référence, un miroir déformable et des moyens d~analyse de surface d~onde, - des moyens de détection produisant une image à partir d~une mesure interférométrique selon le principe de l~OCT, et - des moyens pour régler la focalisation de l~analyseur de surface d~onde. Les moyens de réglage de focalisation sont agencés et commandés, en synchronisme avec le balayage en Z, pour agencés et commandés, en synchronisme avec le balayage en Z, pour forcer le miroir déformable à adopter une courbure supplémentaire, de façon à conjuguer la source lumineuse d~entrée et les moyens de détection avec un point de profondeur prédéterminée dans la rétine.

    PROCEDE ET SYSTEME DE SUPER-RESOLUTION D'IMAGES CONFOCALES ACQUISES A TRAVERS UN GUIDE D'IMAGE, ET DISPOSITIF UTILISE POUR LA MISE EN OEUVRE D'UN TEL PROCEDE

    公开(公告)号:CA2550305A1

    公开(公告)日:2005-08-11

    申请号:CA2550305

    申请日:2004-12-29

    Abstract: L~invention concerne un procédé pour augmenter la résolution d~images confocales acquises à travers un guide d~image dont l~extrémité distale est associée à une tête optique pour focaliser le faisceau laser émis par le gui de d~image dans un objet d~observation. Selon l~invention, pour une position donnée de la tête optique, ce procédé comprend les étapes de : réalisation d~une pluralité d~acquisitions à travers le guide d~image, chaque acquisitio n étant réalisée pour un décalage spatial donné de ladite extrémité distale du guide d~image par rapport à la tête optique qui reste fixe ; transformation des données de chaque acquisition en un nuage de points ; recalage de chaque nuage de points par rapport à un nuage de points pris comme référence ; superposition des nuages de points ainsi recalés ; et reconstruction d~une image finale à partir de cette superposition. Avantageusement, on utilise un tube piézoélectrique commandé disposé autour de l~extrémité distale du guide d~image pour déplacer ce dernier.

    79.
    发明专利
    未知

    公开(公告)号:BR0215371A

    公开(公告)日:2004-12-07

    申请号:BR0215371

    申请日:2002-12-20

    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.

    80.
    发明专利
    未知

    公开(公告)号:BR0215370A

    公开(公告)日:2004-12-07

    申请号:BR0215370

    申请日:2002-12-20

    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.

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