Abstract: A laser tracker for continuous tracking of a reflecting target and for determining the distance to the target is provided. The laser tracker may include a base defining a standing axis, a beam steering unit for emission of a measuring radiation and for receiving at least a part of the measuring radiation reflected by the target. The beam steering unit is motorized to be pivotable relative to the base around the standing axis and a tilt axis extending substantially orthogonal to the standing axis. Furthermore, the tracker has a distance measuring unit configured as an interferometer for determining a change in distance to the target by means of interferometry, an interferometer laser beam source for generating the measuring radiation for the interferometer and an angle measurement functionality for determining an alignment of the beam steering unit relative to the base. The interferometer laser beam source may be configured as a laser diode.

Abstract: A coordinate measuring device includes a carrier that automatically rotates about two axes and can be directed toward a measuring aid. The following are arranged on the carrier so as to be able to move together: a device for optically measuring the distance to the measuring aid; a first light source for emitting a target beam that is visible as a first target point when reflected on the measuring aid; a detection unit for determining a fine position of the first target point on a first position detection sensor; a second light source, the light of which is visible as a second target point when reflected on the measuring aid; a rough target detection unit for determining a rough position of the second target point on a second position detection sensor. A control device directs the carrier toward the measuring aid according to the fine and rough positions.

Abstract: A coordinate measuring device includes a carrier that can be rotated automatically about two axes and that can be directed toward a measuring aid. The following are arranged on the carrier so as to be able to move together: an optical distance measuring device for measuring the distance to the measuring aid; an infrared light source for emitting an infrared target beam, which is visible as an infrared target point when reflected on the measuring aid; a fine target detection unit for determining a fine position of the infrared target point on a first position detection sensor, wherein the fine target detection unit and the distance measuring device have a common exit lens system; a second light source, the light of which is visible as a second target point when reflected on the measuring aid; a rough target detection unit for determining a rough position of the second target point on a second position detection sensor.

Abstract: A coordinate measuring device includes a carrier that can be rotated automatically about two axes and that can be directed toward a measuring aid. The following are arranged on the carrier so as to be able to move together: an optical distance measuring device for measuring the distance to the measuring aid; a light source for emitting light, directly or by means of optical elements, wherein said light is visible as a target point when reflected on the measuring aid; a target detecting unit for determining a position as the position of the imaging of the target point on a position detection sensor. The control apparatus is designed to direct the carrier at the measuring aid by rotating the carrier about the at least two axes of the carrier according to the fine position and the rough position; and the light source is a superluminescent diode (SLED).