Patent ID: 6411372
Filing Date: 2002-06-25
Classification: G01C

Abstract:
A geodetic instrument comprising:a telescope having a sighting axis which has a common intersection point with a tilt axis and a rotational axis about which the telescope is swivelable; a laser arrangement being provided which is used for aligning the rotational axis over a ground point and for determining the height h of the intersection point over the ground point; a first, collimated, laser beam extending in the rotational axis being directed to the ground point; at least one further laser beam path which extends divergent to the first laser beam being provided and enclosing an angle &ggr; with the first laser beam; a measuring device for determining the distance a between the divergent laser beam path at the height of the ground point and the first laser beam; an evaluating device for calculating the height from the relationship between h and a at a known angle &ggr;; and the laser arrangement has a housing which is arranged with its longitudinal axis radial to the rotational axis, a laser radiation source arranged in the housing, an objective which is likewise arranged in the housing for bundling the laser radiation, and a deflecting element following the objective for coupling the laser beam into the rotational axis, and is further outfitted with optical means for generating the divergent second laser beam path.