An illumination device (1, 1', 1") for a vehicle, comprising: - a housing, - an outer cover which closes the housing, wherein the housing and the outer cover generate an inner cavity, and - a unit for generating a hologram arranged in the inner cavity, wherein the unit for generating a hologram comprises: - at least one first light emitter controllable between a first off state and a second on state; - a holographic sheet comprising a hologram element arranged on the surface of the holographic sheet; - a partially transparent dark film superimposed on the holographic sheet, the holographic sheet being arranged between the at least one first light emitter and the partially transparent dark film; and - a reflective or partially reflective film arranged in a direction inclined with respect to the holographic sheet and configured to: a) reflect the partially transparent dark film towards the outer cover, the at least one first light emitter being in the first off state, and b) generate a first illuminated holographic surface in the inner cavity, the at least one first light emitter being in the second on state, wherein the reflective or partially reflective film reflects the hologram element of the holographic sheet towards the outer cover. - a housing, - an outer cover which closes the housing, wherein the housing and the outer cover generate an inner cavity, and - a unit for generating a hologram arranged in the inner cavity, wherein the unit for generating a hologram comprises: - at least one first light emitter controllable between a first off state and a second on state; - a holographic sheet comprising a hologram element arranged on the surface of the holographic sheet; - a partially transparent dark film superimposed on the holographic sheet, the holographic sheet being arranged between the at least one first light emitter and the partially transparent dark film; and - a reflective or partially reflective film arranged in a direction inclined with respect to the holographic sheet and configured to: a) reflect the partially transparent dark film towards the outer cover, the at least one first light emitter being in the first off state, and b) generate a first illuminated holographic surface in the inner cavity, the at least one first light emitter being in the second on state, wherein the reflective or partially reflective film reflects the hologram element of the holographic sheet towards the outer cover. - at least one first light emitter controllable between a first off state and a second on state; - a holographic sheet comprising a hologram element arranged on the surface of the holographic sheet; - a partially transparent dark film superimposed on the holographic sheet, the holographic sheet being arranged between the at least one first light emitter and the partially transparent dark film; and - a reflective or partially reflective film arranged in a direction inclined with respect to the holographic sheet and configured to: a) reflect the partially transparent dark film towards the outer cover, the at least one first light emitter being in the first off state, and b) generate a first illuminated holographic surface in the inner cavity, the at least one first light emitter being in the second on state, wherein the reflective or partially reflective film reflects the hologram element of the holographic sheet towards the outer cover. a) reflect the partially transparent dark film towards the outer cover, the at least one first light emitter being in the first off state, and b) generate a first illuminated holographic surface in the inner cavity, the at least one first light emitter being in the second on state, wherein the reflective or partially reflective film reflects the hologram element of the holographic sheet towards the outer cover.