Patent ID: 8772719
Filing Date: 2014-07-08
Classification: G01C,G01S

Abstract:
1. A coordinate measurement apparatus, comprising: a carrier which with respect to a base is rotatable about at least two axes, wherein the carrier by way of rotation about these at least two axes by way of a closed-loop control device, is configured to be automatically aligned onto a measurement aid movable in space, wherein at least in each case at least one of an exit optical system and entry optical system of the following units are arranged on the carrier in a commonly movable manner, at least one optical distance measurement device for measuring the distance to a measurement aid moved in space; an infrared light source and optical elements for radiating an infrared target beam, wherein the infrared target beam, with a reflection on the measurement aid, is visible as an infrared target point; a fine target detection unit for determining a fine position as the position of the image of the first infrared target point on a first position detection sensor, wherein the fine target detection unit and the distance measurement device have a common exit optical system; a second light source which radiates light at least in the infrared region, wherein this light, with a reflection at the measurement aid, is visible as a second target point; a coarse target detection unit for determining a coarse position as the position of the image of the second target point on a second position detection sensor, wherein the coarse target detection unit is only sensitive to light in the infrared region; and wherein the closed-loop control device is set up for aligning the carrier onto the measuring aid by way of rotation about the at least two axes of the carrier in accordance with the fine position and the coarse position.