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Optical scanning-based system for detecting position and/or orientation of objects

  • US 20100085581A1
  • Filed: 09/25/2009
  • Published: 04/08/2010
  • Est. Priority Date: 09/26/2008
  • Status: Active Grant
First Claim
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1. Optical device for determining position and orientation of an object comprising a fixed part of known position comprising a laser beam projector with sequential scan defining the centre (O) of a reference frame (R) in space, the said projector scanning a beam in a zone comprising at least four point-like sensors fixed to the said object, the orientation of the scan being known at each instant, the four point-like sensors forming a parallelogram, wherein the instants, at which each of the sensors (A′

  • , B′

    , C′

    , D′

    ) is scanned by the beam, determine four directions of each of the sensors in the reference frame (R), the four straight lines passing through the origin (O) and having the said directions intercepting an image plane of the fixed part at four projected points (A, B, C, D), the positions in the image plane of the mappings (A, B, C, D) of the four points determining a quadrilateral (ABCD) making it possible to calculate the position and the orientation of the object in space.

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