| 摘要 |
A distance measuring device includes an emitting optical fiber 1 for emitting a light beam from its distal end to an object so that the light beam may be reflected on the object, a plurality of side-by-side arranged receiving optical fibers 21-27 for receiving the reflected beam at each distal end a holder 3 holding therein the emitting fiber 1 and the receiving fibers 21-27, an actuator for moving the distal ends of the respective emitting and receiving optical fibers concurrently in a same direction and an analyzer for determining a distance to the object on the basis of a signal derived from the light beam received at the distal end of the receiving optical fibers 21-27. Driving the actuator brings in concurrent movements of the distal ends of the respective emitting and receiving optical fibers in a same direction, which increase the irradiation range of the distance measuring device.
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