Patent ID: 8243992

Claim:
Electro-optical system for determining the attitude of a mobile part comprising means for determining at least one direction of the said mobile part, the said system comprising a fixed part having a reference point (O) and a mobile part, the fixed part being linked rigidly with an image plane, wherein the mobile part is linked rigidly with at least one first linear electro-optical device defining a first direction vector, the fixed part projecting in a first zone comprising the first electro-optical device, at least two networks of beams, whose intersection with a plane perpendicular to the mean axis of projection defines at least two networks of non-parallel straight lines, each of the networks of straight lines comprising at least three parallel segments, the beams intercepting the electro-optical device in at least two pairs of triples of points, the system comprising means for calculating a first calculation comprising the determination of the position of a first point (E) in the image plane on the basis of the positions of the six projections in the image plane of the two pairs of triples of points, the first point (E) corresponding to the vanishing point of the straight line comprising the first direction vector, the straight line comprising the reference point (O) and the first point (E) determining a first direction, the said direction representing the direction of the straight line comprising the first linear electro-optical device.