| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving body tracking type light transmitter-receiver capable of tracking stably without deteriorating an S/N ratio without having a special photodetector such as a fourth quadrant type photodetector. SOLUTION: This moving body tracking type light transmitter-receiver is constituted as follows: deterioration of the S/N ratio generated when using the fourth quadrant type photodetector required as a photodetection means in a conventional device is improved, a photodetector 6 for converting received light L1 into a one-system electric signal is used as the photodetection means; a driving control signal S7 generated based on the electric signal S1 by a control means in a subsequent circuit constitution, for adjusting the rotation angle of a reflecting mirror 3 by an angle adjusting means of a driving circuit 13 and a reflecting mirror rotating mechanism 14 is generated so that the quantity of received light L1 entering the photodetector 6 becomes maximum; and the adjustment of the rotation angle by the angle adjusting means can be controlled most suitably. |
