| 摘要 |
<p>A range finder (1) comprises a laser beam emitter (3) for emitting a pulse laser beam, a reflected light beam sensor (4) for receiving the reflected beam, a distance calculating unit (10) for calculating the distance from the elapsed time until the reflected light is received, and a distance displaying unit (8) for displaying the distance. The distance calculating unit (10) has a count section (11) for counting the frequency of when the reflected beam satisfies a predetermined condition, a table creating section (12) for creating a frequency table by accumulating the counts and relating them to distances, a distance determining section (13) for determining the distance where the frequency exceeds a threshold in the frequency table as the distance to the object, and a distance selecting section (15) for selecting a predetermined distance when a plurality of distances are determined and allowing a distance display section (8) to display the selected distance. Thus the distance is adequately displayed even if a plurality of distances are calculated. The ease of use and the function are improved.</p> |
