| 摘要 |
The device (20) has two sources arranged such that directions of the two sources are not parallel. Light sources (S1, S2, S3) include adjustable light intensity with an arrangement such that direction (D1) of a source is not parallel to directions of other sources. The light sources emit light beam (F1), and are arranged such that the beams emitted by the two sources include an area of intersection (F1*2). A controller (22) includes a passenger interface (24), where the interface is capable of receiving commands from a passenger and transmitting them to the controller. The light sources are reading light sources. |
