According to one embodiment, a display device includes a position controller, a projection unit, and a reflector. The projection unit emits light including image information. The projection unit is held by a holder. The position controller is interposed between the holder and the projection unit. The reflector reflects at least a portion of the light emitted from the projection unit. The reflector is held by the holder. A position of the reflector with respect to the holder is fixed. A relative arrangement of the projection unit and the reflector is changeable by the position controller.