Motor vehicle headlamp with optical bar focusing

TLDR: The headlamp has a light source facing the end of an optical bar and a parabolic reflector behind the light source is used to focus light onto the optical bar as mentioned in this paper.

Abstract: The headlamp has a light source (1) facing the end of an optical bar The optical bar (3) is made up of multiple stepped facets (5) A parabolic reflector (2) behind the light source focuses light onto the end of the optical bar A mirror (4) is positioned at the end of the bar that receives the light The mirror can be tilted to various positions, directing the incoming light so it arrives at the optical bar at differing angles The mirror has one plane face and the other face cut in two planes at an angle to each other The third position is with the mirror turned edge on to the incoming light, allowing the light directly on to the end of the optical bar