Scanner with waveguide for scanning paper currency

Details Scanner with waveguide for scanning paper currency Scanner with waveguide for scanning paper currency

G - Physics

07

D

G07D 7/12 (2006.01)

Patent

CA 2419287

A light-scanner (200) that includes a wave guide (230). The scanner (200) defines a scanning zone, and further includes a light-emitting diode (214), and a detector. The wave guide (230) is disposed between the light-emitting diode (214) and the scanning zone. The wave guide (230) defines a light- admitting aperture and a light-reflective surface. The light-admitting aperture and light-reflecting surface cooperate to direct light from the light- emitting diode toward the scanning zone, and to focus such light centrally along a path traveled by such light toward the detector.

L'invention concerne un dispositif de balayage lumineux (200) comprenant un guide d'onde (230). Ce dispositif (200) définit une zone de balayage, et comprend, en outre, une diode électroluminescente (214) et un détecteur. Le guide d'onde (230) est placé entre la diode (214) et la zone de balayage, et définit une ouverture d'entrée de lumière et une face réfléchissant la lumière. L'ouverture d'entrée de lumière et la face réfléchissant la lumière coopèrent afin de diriger la lumière provenant de la diode électroluminescente vers la zone de balayage, et afin de faire converger cette lumière au centre le long du passage parcouru par la lumière en direction du détecteur.

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