DISTANCE MEASURING DEVICE

摘要

A distance measuring device comprising a light projection unit for irradiating an object of measuring with a distance measuring light (22), a reference reflection unit (55) provided at a known position so as to be able to move relative to and cross the irradiating distance measuring light, a light reception unit (7) for receiving a reflection light from the object of measuring as a reflection distance measuring light (22') and a reflection light from the reference reflection unit as an internal reference light (22"), and a control-computing unit (15) for computing a distance to the object of measuring based on a reception signal relating to the above reflection distance measuring light and a reception signal relating to the above internal reference light.