Lighting device for a vehicle, comprising an ouput lens and an intermediate screen

A luminous device for a vehicle, the luminous device comprising:

• at least one luminous module configured to generate primary light rays forming a light beam,
• an exit outer lens,
• a decoupling relief structure,
• an intermediate screen including the decoupling relief structure, the intermediate screen being arranged between the at least one luminous module and the exit outer lens, and having a first face facing the at least one luminous module and a second face facing the exit outer lens,
• the decoupling relief structure being arranged on the first face of the intermediate screen, the intermediate screen having a non-constant thickness such that the primary light rays of the light beam exit from the second face of the intermediate screen in a direction identical or parallel to a direction in which they entered through the first face of the intermediate screen.