Abstract: A projector of a light beam includes a first optical body movable along a frame for modifying its position with respect to an outlet lens and to a light source. A second optical body includes a first prismatic lens having a first number of twists and turns on at least one relative concave surface for generating a plurality of optical effects acting on the beam. A third optical body includes a second prismatic lens, positioned alongside the first prismatic lens, having a second number of twists and turns for generating a plurality of optical effects, individually or in combination with the first prismatic lens. The second and third optical bodies can rotate between non-operating positions, wherein the respective prismatic lenses are away from the light beam, and operating positions, wherein the respective prismatic lenses are positioned along a lighting trajectory of the light beam.

Abstract: A light beam projector includes a shell; a light source; an outlet lens; a first optical body for focusing a light beam from the light source, interposed between the light source and the outlet lens; a second optical body for varying the focal length of the light beam, interposed between the first optical body and the outlet lens; a third optical body generating an optical effect on the light beam; the third optical body including a lens movable between a non-operating position and an operating position, wherein the third optical body is positioned along the light beam trajectory; a carriage for supporting the third optical body; and a movement device connected to the carriage for moving the third optical body along a trajectory parallel to the shell so as to modify its position relative to the first and second optical bodies.