| 摘要 |
<p>The device has a laser source emitting an infrared laser beam (10) for transmitting multimedia data e.g. audio data, towards an optical sensor (52) i.e. photoelectric cell. A two-way mirror (50) reflects the laser beam towards a convex lens (51) that focuses the laser beam on the optical sensor. The laser source is arranged at an end of a cabin of an aircraft, and the optical sensor is associated with a seat.</p> |
