Trimble Navigation Limited

Trimble Kaiserslautern Gmbh

Spectra Precision (kaiserslautern) Gmbh

Lars Schumacher

Karsten Woll

Robert G Conner

Otto Bellon

The present invention relates to a laser device for supporting work on a construction site and a laser beam detector for detecting light of a laser beam rotating around a rotation axis of a laser device. There is a need that the detector is able to identify the laser device which emitted the light that the detector detects. This can be achieved by a laser device comprising a laser unit configured to emit a laser beam; an optical element arranged to rotate the laser beam around a rotation axis; and a transmitter configured to transmit a communication signal over an interface to a receiver of a laser beam detector, wherein the communication signal provides information about a rotation pattern of the rotating laser beam.

Laser device and laser beam detector for detecting light of a laser device

The present disclosure relates to a surveying system including a surveying instrument and method for detecting light of fan shaped laser beam. The surveying instrument includes a detector for detecting light of the fan shaped laser beam rotating around a propagation axis with a direction of rotation and having two detector elements arranged in a known spatial relation for outputting a detection signal when irradiated. A position determining unit is used to obtain a first set of detection signals from the detector elements, to determine a first time relation between the detection signals of the first set, and to determine a positional relation between the detector and the propagation axis based on the first time relation.

Surveying instrument and method for detecting a laser beam

A method of operating a laser reference system orients a reference plane of laser light generated by a transmitter so compensation is made for rake angles between the first and second axes of the transmitter and first and second non-orthogonal alignment axes. The transmitter includes an optical system arranged to generate a laser beam, the optical system projecting said laser beam radially along a rotational arc defined about a central rotational axis, thereby substantially defining a reference plane of laser light, and a positioning arrangement, coupled to said optical system, for adjusting the angular orientation of the optical system with respect to a first transmitter axis and with respect to a second transmitter axis. Detectors are arranged to detect reception of the laser beam.

Laser reference system

The present disclosure relates to a positioning system including a positioning device and method for detecting light of fan shaped laser beam. The positioning device includes a detector for detecting light of the fan shaped laser beam rotating around a propagation axis with a direction of rotation and having two detector elements arranged in a known spatial relation for outputting a detection signal when irradiated. A position determining unit is used to obtain a first set of detection signals from the detector elements, to determine a first time relation between the detection signals of the first set, and to determine a positional relation between the detector and the propagation axis based on the first time relation.

Positioning device and method for detecting a laser beam

The application relates to indicating a grade for example in constructions applications using a laser beam. A laser beam is emitted from a laser unit to a desired direction having a grade angle with regard to a level angle. The level sensor is provided for adjusting the level angle and a grade sensor is provided for indicating a grade angle on the basis of the level angle from the level sensor.

Grade indicating device and method

The present invention relates to an optical instrument with an angle indicator and a method for operating the same enabling simple monitoring of instrument inclination and operation in a large angle range. The optical instrument comprises a base portion, a head portion tiltable relative to the base portion within a device angle range, a base angle indicator attached to the base portion for determining a base angle of the base portion and a determination unit for determining an indication angle range of the head portion based on the base angle and the device angle range.

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Relsberg, Germany

Lars Schumacher