| 摘要 |
<p>A holographic center high mounted stoplight (CHMSL) system is disclosed for a vehicle having a rear window (211). The CHMSL system includes a stoplight hologram (21) secured adjacent the rear window (211), a playback illumination source (30) for providing along a source optical axis (SA) a vertically converging beam that converges to a horizontal line focus (A), and a thick concave/convex lens (23) responsive to the vertically converging beam for controlling the vertically converging beam to converge to a line focus (B) that is within said lens (23) and further from the illumination source (30) than such line focus (A) would be without the lens (23), and for providing an output beam along an output axis (OA) . <IMAGE></p> |
