The invention relates to a device for cosmetic treatment by light comprising: - a plurality of light emission sources (10, 11), each source emitting a light beam (12, 13) with a given angular aperture (2α)； - a screen (2) positioned facing the light sources (10, 11) and suitable for transmitting the light beams of each source, in which the screen (2) comprises at least one imprint (3) integrated into the screen and modifying the angular aperture of the transmitted beam (2β) of at least one light emission source.
