Apparatus for surface image sensing and surface inspection...

G - Physics – 01 – B

Patent

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Details

G01B 11/24 (2006.01) G01B 11/245 (2006.01) G01N 21/89 (2006.01) G01N 21/952 (2006.01)

Patent

CA 2343390

An apparatus for providing a two-dimensional image of a three-dimensional object (1) illuminates the surface (11) of the object using an illumination source (2). Portions (6) of the surface are imaged through an aperture (12) in a plate (5) onto a portion (7) of a matrix sensor (3). The object is rotated about its principle axis while being simultaneously translated, and, at the same time the aperture is also rotated. By synchronising these translational and rotational movements, successive portions of the object surface can image onto respective successive portions of the matrix sensor, thereby providing an improved two- dimensional image of the surface of the object.

Appareil permettant d'obtenir une image en deux dimensions d'un objet (1) en trois dimensions, dans lequel la surface (11) de l'objet est éclairée à l'aide d'une source d'éclairage (2). Des parties (6) de la surface sont représentées par une image passant par une ouverture (12) dans une plaque (5) et parvenant sur une partie (7) d'un capteur (3) matriciel. L'objet est amené à tourner autour de son axe principal tout en étant simultanément translaté, et au même moment, l'ouverture est elle aussi amenée à tourner. Grâce à la synchronisation de ces mouvements de translation et de rotation, des parties successives de la surface de l'objet peuvent être représentées par une image sur des parties successives respectives du capteur matriciel, ce qui permet d'obtenir une image améliorée en deux dimensions de la surface de l'objet.

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