With the stepped reflector the light of the light bulb without lens glass and without losses should illuminate the roadway. There the light cone should be limited particularly with the dipped headlights sharply and may go out of the permissible area of 25 m with right-hand traffic only to the right edge.
The special light distribution is reached with free form reflectors or step reflectors without lens glass by subdivision in single stripes. Not more the lens glass deflects the in parallel resigning light, but the beams of light are so deflected on the single parts of the reflector precisely as they are needed on the roadway. The reflector is no more symmetrical and a rotating paraboloid, but his reflexion is almost point-exactly calculated by computer. Such a reflector always in the transparent glass cover is recognizable.