fixed shield c whose optically active edge bo fig2 is the margin of the shield in its upper part this edge is chosen here to delimit a low beam type beam with an oblique cut off at 15 u00b0 conforming to european regulations an additional optical element eo is disposed between the reflector r and the shield c this is an element in the form of a plate whose front edge bav fig3 a 3c is placed next to the optically active edge of the shield c and which is substantially flat with different variants described later it has a face turned upwards which is reflective this element is mechanically fixed to the shield c or can form an integral part thereof the shield c and the optical element eo are both made of metal they can also be made of a polymer based material provided that it is chosen to be sufficiently heat resistant and that the optical element can be metallised on at least one of its faces in order to make it reflective this element will also be referred to by the term u201c folder u201d in all the present text the advantage of this element is more particularly illustrated in fig1 taking a ray r 1 emitted by the source and then reflected at the top part of the reflector it can be seen that this ray passes above the shield to reach the lens this ray will be included in the beam.