G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 9/20 (2006.01) A61B 5/117 (2006.01) G06K 9/00 (2006.01)
Patent
CA 2223022
A fingerprinting device including a thin, flat transparent medium (10) with an outer surface engageable by a fingertip and an inner surface supporting a two-dimensional array of light-sensitive elements with linear gaps therebetween, as well as a substrate (14) with an inner surface supporting light sources for directing a light beam substantially orthogonal to said outer surface through the linear gaps in the medium. The light-sensitive elements are shielded from the light from the light sources so that they provide an output only in response to the light backscattered onto the outer surface of the medium.
Le dispositif capteur d'empreintes digitales comprend un support (10) transparent, plat et mince ayant une face externe destinée à recevoir l'extrémité d'un doigt et portant sur une face interne une matrice à deux dimensions d'éléments photosensibles séparés par des intervalles en bande et un substrat (14) portant, sur une face interne, des sources de lumière destinées à diriger, à travers les intervalles en bande, un faisceau de lumière traversant le support, sensiblement orthogonal à ladite face externe. Les éléments photosensibles sont protégés contre la lumière provenant des sources de façon à ne fournir un signal de sortie qu'en réponse à la lumière rétro-diffusée vers la face externe du support.
Goudreau Gage Dubuc
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