Optical device and module comprising such an optical device, both intended for a lighting device, enabling the creation of lighting effects

An optical device comprising:

• a support mounted on a rotational drive motor and a reflective optical component;
• the support comprising at least one sleeve coaxial with an axis of rotational drive;
• one end of the sleeve defining an inlet orifice and comprising in its wall an opening defining an outlet orifice in which the reflective optical component is housed, so that a light beam entering via the inlet orifice is reflected by the reflective optical component so as to exit via the outlet orifice;
• and the reflective optical component is mounted and held in the sleeve by cooperation of the shape of the wall of said sleeve, the sleeve comprising two diametrically opposite and identical openings in which the reflective optical component is housed so as to extend in the sleeve between these two openings.