Patent ID: 8125352

Claim:
An optoelectronic device for aiding a guidance of aircraft, said aircraft comprising a landing gear and a nose wheel, the aircraft being situatable on an airport traffic way, said device comprising: means for calculating a deviation factor for an actual trajectory of said aircraft relative to a theoretical trajectory on said traffic way, means for generating symbols and at least one head-up collimator comprising means for displaying and superimposing said symbols on an outside landscape, wherein the deviation factor is calculated based on a first angle PÂ′G determined by a vertex of a triangle defined by a first point A′ arising from a projection of a central point of the landing gear on the actual trajectory, a second point, called a guidance point G, situated between a projection of a point of the nose wheel of the aircraft and the projection of the central point of a main landing gear on the actual trajectory and a third point P, defined by the projection of the guidance point on the theoretical trajectory and that the means for generating symbols generate a symbol representing said deviation factor, so as to be superimposed on said traffic way.