Patent ID: 9407363
Filing Date: 2016-08-02
CPC Classification: H04B

Claim Text:
1. A capturing device comprising: an optical receiver configured to receive a beam from outside, as a reception beam; a reception beam capturing unit adapted to perform a capturing operation to introduce the reception beam to the optical receiver; an optical transmitter configured to generate a transmission beam to transmit to outside; a transmission beam scanning unit configured to perform a scanning operation of the transmission beams; and an optical circulator in which the same terminal is used for incidence of the reception beam and exit of the transmission beam; wherein the fine scanning unit is further configured to be controlled by the third signal from the capture controller to scan the transmission beam in accordance with a predetermined scanning path which is an overlapped spiral path which spirals from the center of a scanning range to an outside of the scanning range, and the fine scanning unit is further configured to be controlled by the fourth signal from the capture controller to scan the transmission beam in accordance with the predetermined scanning path which is the overlapped spiral path from the center of the scanning range to the outside of the scanning range such that at least one of a plurality of overlapped portions of the overlapped spiral path is a cluster of a finer overlapped spiral path within the scanning range from the center of the cluster to an outside of the cluster.