| 摘要 |
A communication system for a surveying instrument according to the present invention comprises: a tracking target (12) for reflecting tracking light (P2) therefrom; a survey unit (10) for emitting the tracking light (P2) toward the tracking target (12) and receiving a tracking light reflected (P2) from the tracking target (12) using a light receiving device (30) to thereby automatically track the tracking target (12); a modulator for modulating the tracking light (P2) in order to transmit information concerning a surveying work toward the tracking target (12); a light receiving element (39a, 39b) provided on the tracking target (12) to receive the tracking light (P2); and a demodulator for demodulating the tracking light (P2) received by the light receiving element (39a, 39b). The transmission of information concerning the surveying work is carried out through optical communication using the tracking light (P2), and the influence caused by electric wave noises, radio interference and the like can be avoided. <IMAGE> |
