Laser scanner optics and surveying equipment

摘要

PROBLEM TO BE SOLVED: To provide a measurement device with an optical system of a laser scanner which prevents a light beam of a distance measurement light from being enlarged and emits a high-quality distance measurement light.SOLUTION: An optical system 11 of a laser scanner includes: a light projection system 12 for emitting a distance measurement light 22; a scanning mirror 15 for rotationally emitting the distance measurement light 22 from the light projection system 12 around one axis and making a reflected distance measurement light 22' from a measurement object enter a light receiving system 13; and a transmission window 9 containing the scanning mirror 15, through which the distance measurement light 22 and the reflected distance measurement light pass through; and a corrective optical member 25 for offsetting the optical effect of the transmission window 9 at least in the middle of the optical passage irradiated with the distance measurement light 22.SELECTED DRAWING: Figure 2