| 摘要 |
An anisotropic diffuser (44) is arranged in front of a shield (22) to distribute the light rays (Rir) emitted by a secondary light source (42) on the input surface (19) of a principal lens (18), with a view to produce a secondary beam (Fir). The secondary light source is arranged outside the path of the light rays from the principal light source (16) and directed towards the input surface. |
