Apparatus for determining the internal impression of the...

G - Physics – 01 – B

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G01B 11/24 (2006.01) A61B 5/107 (2006.01) G02B 7/182 (2006.01) G02B 23/24 (2006.01) G02B 26/08 (2006.01)

Patent

CA 2489070

An apparatus for determining the internal outline of a duct or cavity, comprises light-emitting means (71) suitable for generating a collimated light beam, an elongate probe element (51; 51' ; 51") suitable for being introduced into the duct and for guiding the collimated beam along a predetermined propagation direction, reflector means (52) supported by the probe element (51; 51' ; 51") and suitable for deflecting the collimated beam so as to illuminate the internal wall of the duct, and for deflecting the reflected or diffused light coming from an illuminated point (p) of the internal wall so as to guide it along the probe element (51; 51' ; 51"), and detection means (76) suitable for receiving an image of the illuminated point (p), which image is correlated with the optical distance of the point from the detection means (76), and for providing a corresponding electrical signal. The image is formed by the light guided by the receiving reflector means (52). The reflector means comprise a micro-mirror element (52) articulated to a distal end of the probe element (51 ; 51' ; 51"). The micro-mirror element (52) is orientable so as to deflect the collimated beam in selectively different directions.

Un appareil destiné à déterminer le contour interne d'un conduit ou d'une cavité comprend un moyen photoémetteur (71) apte à générer un faisceau de lumière collimaté, un élément de sonde oblong (51 ; 51' ; 51'') apte à être introduit dans le conduit et destiné à guider le faisceau collimaté le long d'un sens de propagation prédéterminé, un moyen réflecteur (52) porté par l'élément de sonde ((51 ; 51' ; 51'') et apte à dévier le faisceau collimaté de manière à illuminer la paroi interne du conduit, et destiné à dévier la lumière réfléchie ou diffusée provenant d'un point illuminé P de la paroi interne, afin de la guider le long de l'élément de sonde (51 ; 51' ; 51''), ainsi qu'un moyen de détection (76) apte à recevoir une image du point illuminé P, laquelle image est mise en corrélation avec la distance optique du point à partir du point de détection (76), et afin de fournir un signal électrique correspondant. L'image est formée par la lumière guidée par le moyen réflecteur de réception (52). Le moyen réflecteur comprend un élément de micro-miroir (52) articulé sur une extrémité distale de l'élément de sonde (51 ; 51' ; 51''). L'élément de micro-miroir (52) est orientable afin de dévier le faisceau collimaté dans des directions sélectivement différentes.

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