Abstract: A light processor applied to the modulation of colored light, formed of a color modulated light source, includes a longitudinal modular box forming a frame and a support for the components of the source, the box being formed with windows for the passage of light beams and connection openings for control circuits, as well as devices for fixing the components of the source, and devices for assembly means with similar boxes, for providing, by superposition and/or juxtaposition, assemblies of boxes adapted to the various applications envisaged. The light source has a reflector and is mounted inside the box on a base thereof. A plurality of dichroic inclined mirrors are mounted one after the other on the base inside the box along the path of the light beam emitted by the light source, such that each dichroic mirror reflects a portion of the light spectrum emitted by the source, and transmits the remaining portion of the beam to the subsequent mirror.