Abstract: Motor-vehicle body part including a lenticular sheet made of transparent molded plastic material of a given refractive index (n) higher than 1 and a given thickness (e), includes an external face forming an array of substantially spherical microlenses of a given radius of curvature (R), said microlenses being arranged with a given pitch and, an internal face of the lenticular sheet, which bears an array of three-dimensional features that are arranged with the pitch of the array of microlenses. This array of features is formed from fractions of a whole three-dimensional feature of equal dimensions, two adjacent fractions of three-dimensional features being offset in the direction in question by a given phase shift, each of these fractions of three-dimensional features magnified by a given coefficient of magnification, are juxtaposed on the internal face of the lenticular sheet with a pitch corresponding to the pitch of the microlenses.

Abstract: The optical device is intended to be placed in a housing to form a light signal lamp for a vehicle. The optical device includes, along the longitudinal direction: an input portion receiving rays emitted by a light source; a middle portion having two lateral faces spaced from each other along a transverse direction; an output portion including an output face through which the rays which have propagated in the optical device are emitted. The output portion comprises at least one module having lateral faces which, when viewed in the elevation direction, have an ogive shape and which define a front ridge extending substantially in a plane parallel to a plane.

Abstract: Motor-vehicle body part including a lenticular sheet made of transparent molded plastic material of a given refractive index (n) higher than 1 and a given thickness (e), includes an external face forming an array of substantially spherical microlenses of a given radius of curvature (R), said microlenses being arranged with a given pitch and, an internal face of the lenticular sheet, which bears an array of three-dimensional features that are arranged with the pitch of the array of microlenses. This array of features is formed from fractions of a whole three-dimensional feature of equal dimensions, two adjacent fractions of three-dimensional features being offset in the direction in question by a given phase shift, each of these fractions of three-dimensional features magnified by a given coefficient of magnification, are juxtaposed on the internal face of the lenticular sheet with a pitch corresponding to the pitch of the microlenses.