Sensor and method for range measurements using a tdi device

G - Physics – 01 – S

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G01S 17/48 (2006.01) G01B 11/25 (2006.01)

Patent

CA 2423325

A sensor and method for taking range measurements of a target object using a TDl device as a deflector are provided. The device is positioned to detect reflections of a structured light beam on the target object. To avoid losing the range information in the TDl process, the exposition of the device to the reflection of the light beam is restricted to the first integration period of the acquisition cycle of the TDl device, so that the output of the device provides line by line an image of the light beam on the target object during this first integration period.

L'invention concerne un capteur et un procédé permettant d'effectuer des mesures de portée d'un objet cible au moyen d'un dispositif à report et intégration (TDI) servant de détecteur. Ce dispositif est positionné pour détecter les réflexions d'un faisceau lumineux structuré sur l'objet cible. Pour éviter les pertes d'informations de portée contenues dans le dispositif TDI, l'exposition du dispositif à la réflexion du faisceau lumineux est limitée à la première période d'intégration du cycle d'acquisition du dispositif TDI, de façon que la sortie du dispositif fournisse ligne après ligne une image du faisceau lumineux dirigé sur l'objet cible lors de ladite première période d'intégration.

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