| 摘要 |
PURPOSE:To execute exactly distance measurement of an artificial target position by placing a light shielding plate between a boresight part and a photodetecting part, when executing an artificial target position setting work. CONSTITUTION:A light shielding plate 4 which freely attachable and detachable is installed to the whole surface of an incident and emitting surface of a distance measuring target 3 of a photodetecting part, and it is cut off that distance measuring optical beams emitted from a range finder 1 are made incident on the target 3. Accordingly, this device does not receive an interference caused by reflection of the distance measuring optical beams from the target 3, therefore, distance measurement of a position of the artificial target can be executed exactly. |
