LASER DISTANCE MEASURING EQUIPMENT

摘要

PURPOSE: To provide a laser distance measuring equipment in which the adverse effect of reflected transmitting laser light can be prevented in the equipment and the accuracy of measurement can be enhanced. CONSTITUTION: The laser distance measuring equipment comprises a rotary polygon mirror 3 for reflecting a transmitting laser light LT emitted from a laser light source, i.e., a laser diode 2, toward a target T, and a nodding mechanism 10 for turning the rotary polygon mirror 3 about an axis intersecting the rotary axis 3a of the rotary polygon mirror 3 perpendicularly. The lower side of the rotary polygon mirror 3 serves as the reflection area of the transmitting laser light LT while the upper side thereof serves as the reflection area of a receiving laser light LR. A curved surface panel window 20 having the center of curvature at the axis P of rotation the rotary polygon mirror 3 caused by the nodding mechanism 10 is provided on the laser light receiving side of a case 7 along with a barrier plate 21 for partitioning the upper and lower reflection areas between the rotary polygon mirror 3 and the curved surface panel window 20.