Collimator, especially for the light device of a vehicle, and an optical module comprising the collimator

A collimator for a light device of a vehicle, with an output area approximately having the shape of an n-gon with legs and apices, for collimation of light rays emitted by a light source associated with the collimator, wherein in a view of the collimator from a side from the optical source in a direction of a lighting axis of the collimator, the collimator comprises n first parts and n second parts, wherein each first part is associated with one of the legs of the n-gon and comprises a first sector of a first circular collimator, the first circular collimator being approximately inscribed in the n-gon, in such a way that this leg is tangential to an outline of a circular output area of the first circular collimator, wherein this first sector is delimited between two planes being perpendicular to the circular output area and passing through the center of the circular output area and intersecting the leg, and each second part is associated with one of the apices and is comprised in a second sector of a second circular collimator, the second circular collimator being approximately circumscribed around the n-gon, in such a way that an outline of an output area of this second circular collimator passes through the apex, wherein this second sector is delimited between two planes, each of which planes, at the same time, delimiting adjacent first sector from one side.