A light module for a motor vehicle headlight comprising first and second light radiation sources suitable for emitting light radiations to a wavelength conversion device which is likely to re-emit a light radiation to an optical projection system to produce a light beam, wherein the module comprises a single wavelength conversion device which is common to the radiations of the first and second sources, and the first light radiation source comprises at least one first light source suitable for emitting a first light beam which cooperates with a first scanning system, the first scanning system being provided with a means for deflecting the light rays emitted by the first light source and configured to scan the conversion device with the first light beam in a first direction.