| 摘要 |
In the present invention, a liquid crystal member (13) has a liquid crystal pixel group that causes light exiting from a first fiber (11) to be reflected. A second fiber (15) has a core to which primary light within the reflected light of the liquid crystal member (13) is coupled. A light reception unit (16) receives high-order light from within the reflected light of the liquid crystal member (13). A control unit (17) controls the coupling efficiency of the primary light to the core of the second fiber (15) by means of altering the angle of the reflected light of the liquid crystal member (13) on the basis of the light reception results of the light reception unit (16). |
