1. A night vision system for a motor vehicle, comprising: a camera that is sensitive to near infrared radiation; an evaluation arrangement to improve a raw image, obtained by the camera, to provide an improved image; and a display arrangement having a lower gray-scale value resolution compared to that of the camera to display the improved image, wherein a target area to be imaged using the camera is illuminated by one of a vehicle headlight and a floodlight, wherein the raw image delivered by a sensor is first sharpened and then a contrast of the sharpened image is enhanced, and wherein the sharpening of the image is achieved by an image processing module, which sharpens the unsharp image created by a reflection of an incident infrared light at a rear wall of a housing of an optical sensor.