This paper describes a constructive procedure aimed at developing a CAD/CAE/CAM system for designing the reflector of an automobile headlight for a given light intensity distribution on the target (road), considering the styling of modern passenger cars. A design concept is described in which the reflector alone produces the specified illumination pattern. Consider a reflector system consisting of a reflecting surface S, a point light source O, and some object T (road). Assume that the source O, reflector S, and object T are positioned so that the rays reflected off S are incident on T. Depending on the geometry of S the energy radiated by O and redirected by S is distributed on T to produce a certain illumination pattern. A solution of the inverse problem consisting of constructing the reflector S from constraints such as installation space, depth, height, and width of a headlight pertaining to a particular automotive body profile, the object T, and the specified illumination pattern to be achieved on T is presented. This solution is integrated with CATIA V5 for downstream functions such as manufacturing.