A head up display arrangement presents a virtual image to a human driver of a motor vehicle. The arrangement includes a picture generation unit emitting a light field such that the light field follows an optical path, is reflected by a windshield of the motor vehicle, and is visible to the human driver as the virtual image. A glare trap lens is positioned in the optical path between the picture generation unit and the windshield and passes the light field. The glare trap lens improves an optical characteristic of the virtual image as seen by the human driver. The glare trap lens includes an outer surface having an elongate rib thereon. The rib is positioned to block stray light that has been reflected off of the outer surface of the glare trap lens.