| 摘要 |
PROBLEM TO BE SOLVED: To provide a viewing device capable of viewing an unmanned aerial vehicle even if the sunlight enters the eyes, and thereby adverse effect on the health of the eyes can be prevented.SOLUTION: A viewing device 1 includes an eyeglass type viewing device body 1A used for viewing an unmanned aerial vehicle, a light control filter 40 provided in the viewing device body 1A and capable of changing the transmission of external light incident on the view of a user wearing the viewing device body 1A, and a viewing device control unit provided in the viewing device body 1A and controlling the transmission of external light of the light control filter 40, so that the unmanned aerial vehicle can be viewed from the field of vision.SELECTED DRAWING: Figure 2 |
