A visualization device is provided that includes an actual light box that includes an illumination array for illuminating an actual object (OR) placed in the actual light box; and a rear limiting wall which functions as a screen. The device also includes a computer programmed to spatially display a virtual light box on the screen, such that the virtual light box displayed on the screen appears to form a continuous rearward extension of the actual light box. In addition, a virtual object (OV) may be displayed on the screen, such that the virtual object (OV) is situated in the virtual light box. The combination of an actual light box and a virtual light box allows an observer to realistically assess appearance data rendered onto a virtual object, in a direct comparison with an actual object.