Patent ID: 11933897
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A distance measurement device for measuring a distance to an object that exists in a distance measurement region, by rotating laser light about a rotation center axis, the distance measurement device comprising:
a mirror disposed so as to be tilted relative to the rotation center axis;
a drive unit configured to rotate the mirror about the rotation center axis;
a photodetector configured to detect reflected light, of the laser light, reflected in the distance measurement region; and
a condensing lens disposed on the rotation center axis and configured to condense the reflected light reflected by the mirror, on the photodetector, wherein
the mirror has a shape elongated in one direction and is disposed such that a short axis thereof is tilted relative to the rotation center axis in a direction parallel to a plane including the rotation center axis, and
a width in a short-axis direction of the mirror is smaller than a width of a lens portion of the condensing lens as viewed in a direction parallel to the rotation center axis.