US Patent 8350724 Rear parking assist on full rear-window head-up display

A substantially transparent head up display includes one of light emitting particles or microstructures over a predefined region of the substantially transparent head up display permitting luminescent display while permitting vision through the substantially transparent head up display. A method to display a graphic upon the substantially transparent head up display of a vehicle illustrating a parking aid includes monitoring a parking mode, determining the graphic illustrating the parking aid for projection upon a view of a parking surface proximate to the vehicle for display upon the substantially transparent head up display based upon the parking mode and displaying the graphic illustrating the parking aid upon the substantially transparent head up display.