| 摘要 |
PROBLEM TO BE SOLVED: To provide a distance measurement device which puts a mirror surface in a state of irregular reflection, so as to be able to measure distance by the irregular reflection from the mirror surface even when the humidity of an environment surrounding the mirror surface is low.SOLUTION: A distance measurement device includes: a spraying part (5) for spraying liquid particles on a measured object (30); and a distance sensor (3) for detecting a distance to the measured object (30) on which the liquid particles are sprayed on the basis of a reflection wave generated by making an outgoing wave for sensing irregularly reflected on the measured object (30).SELECTED DRAWING: Figure 1 |
