| 摘要 |
PROBLEM TO BE SOLVED: To provide a spatial optical transmission device capable of quickly and simply providing information necessary for a user through a mobile terminal.SOLUTION: The spatial optical transmission device includes: a spatial light transmitter 1 storing preset self-ID information and including a projection unit for projecting spatial light having superposed ID information; and a spatial light receiver 30 including a photoreceiver unit 31, connected to a mobile terminal 4, for receiving spatial light projected from the projection unit of the transmitter, and a photoreceiver circuit for amplifying the light-receiving signal of the photoreceiver unit. The spatial light receiver 30 also includes a connector unit 34 connected to a microphone input terminal 45 of the mobile terminal 40, as a terminal for outputting the received optical output signal of the photoreceiver circuit 33. |
