Abstract: A distance measuring device comprising a sensor for highly accurate distance measurement with a very high dynamic range and range walk compensation, said sensor being provided by means of an array of single photon avalanche photodiodes

Abstract: A light receiver designed to determine a position or orientation relative to a reference light wherein the light receiver comprises an elongated rod-shaped light receptor with two ends, a light coupler, a light guide, and light detection means at both ends and a signal processor to process the electric signals of the detection means and to determine the relative position and/or orientation by a comparative evaluation of the electric signals. The light guide serves as a light propagation path of defined length for light coupled into the light guide by the light coupler and the signal processor determines the position and/or orientation based on light propagation speed of the reference light propagating in the light guide.

Abstract: Some embodiments relate to a geodetic surveying device having a beam source for generating measurement radiation, a base defining a vertical axis, a support carrying a targeting unit and defining a tilt axis, the support being arranged on the base and rotatable relative to the base about the vertical axis, and the targeting unit being arranged rotatable relative to the support about the tilt axis, and an angle- and distance-measuring functionality. Moreover, the geodetic surveying device has an image acquisition unit for acquiring images of an object in a field of view defined by the image acquisition unit, and a control and processing unit. The image acquisition unit has at least an image sensor and a microlens array with a multiplicity of diffractive and/or refractive optical elements arranged in a defined two-dimensional manner.

Abstract: Some embodiments of the invention relate to an optical measuring device for determining 3D coordinates of an object. The optical measuring device may include a projector device for illuminating the object with at least one predefined pattern; at least one PSA camera for capturing a 2D image of the pattern as reflected from the object; computing means for measuring a sequence of brightness values of at least one 2D image point from the 2D images, and calculating a 3D coordinate of an object point which is correlated with the measured sequence of brightness values of the 2D image point. The optical measuring device may also include a TOF camera for capturing at least one range image of the object, the range image including distance information of the object for the dissolution of ambiguity in calculating the 3D coordinate.

Abstract: Some embodiments of the invention relate to an electrooptical distance measuring device comprising light source, reception circuit comprising detector, in particular avalanche photodiode APD and control and evaluation component for deriving a distance to the target object. Some embodiments of the invention, the detector has at least two mutually independent reception segments for mutually independently generating a respective resultant electrical signal, wherein the reception segments are assigned to predefined or predefinable, in particular different, distance ranges to be measured. Furthermore, at least two independent amplifiers may be provided in the reception circuit. Some embodiments of the invention, therefore, for a reception segment which is assigned only to a lower distance range of comparatively near distances, an amplifier having a comparatively low gain factor can now be connected downstream, such that it is therefore possible as a result to avoid e.g.

Abstract: A distance measuring method and an electronic laser distance measuring module, in particular for use in a distance measuring apparatus, especially configured as a laser tracker, tachymeter, laser scanner, or profiler, for fast signal detection with an analog-to-digital converter, wherein conversion errors that arise in the context of a signal digitization, in particular timing, gain and offset errors of the ADC, are compensated for by means of variation of the sampling instants

Abstract: A distance measuring method and an electronic laser distance measuring module, in particular for use in a distance measuring apparatus, especially configured as a laser tracker, tachymeter, laser scanner, or profiler, for fast signal detection with an analog-to-digital converter, wherein conversion errors that arise in the context of a signal digitization, in particular timing, gain and offset errors of the ADC, are compensated for by means of variation of the sampling instants.

Abstract: The invention relates to a method for determining 3D coordinates of an object (2) by a handheld laser-based distance measuring device (1), the method comprising determining an object point (20) at the object (2); measuring a distance (100) from the handheld laser-based distance measuring device (1) to the determined object point (20) by means of an EDM (10); capturing a 3D image (110) of the object (2), the 3D image (110) includes the determined object point (20); identifying the determined object point (20) in the captured 3D image (110); and linking the measured distance (100) with the identified object point (20) in the 3D image (110). The invention also relates to a handheld laser-based distance measuring device (1) and a computer program product for execution of said method.

Abstract: A distance measuring method and an electronic laser distance measuring module, for determining a distance to a target object, wherein the transmitted signal is emitted with selected polarization states by a transmitting unit of the laser distance measuring module. The transmitted signal is emitted and the received signal is acquired such that a polarization identifier of the polarization state of the transmitted signal adheres to the received signal and an evaluation of the received signal is derived based on the polarization identifier, to take into consideration multiple reflections during the processing of the received signal to determine the distance.

Abstract: A surveying device for determining the position of a target, comprising a means for orienting a target axis of the surveying device towards the target point, an angle-measuring functionality for the highly precise detection of the orientation of the target axis, and evaluation means for data storage, a height measuring system for determining a height of the surveying device above the ground by means of triangulation, wherein the height measuring system comprises at least one laser plummet for emitting a laser beam along a standing axis of the surveying device onto a ground point, and a detection unit comprising a line sensor for detecting a diffuse backscattering of the laser beam, and wherein the height measuring system for determining a height of the surveying device above the ground point is designed based on a position of the diffuse backscattering on the line sensor.

Abstract: A measuring device, in particular a tachymeter, laser scanner, profiler, or laser tracker, having an electronic laser distance measuring module, which comprises an optical transmitting channel having a transmitting unit and an optical receiving channel having a receiving unit for laser measuring radiation, wherein the beam guiding in the electronic laser distance measuring module is implemented by means of fiber optics, and wherein a settable attenuation unit based on an optically active crystal for attenuating the laser measuring radiation generated by the transmitting unit is provided in the optical transmitting channel.

Abstract: Some embodiments of the invention may relate to an optical surveying device having a base for setting up the surveying device and a targeting unit, which is rotatable in relation to the base about two axes, and which defines a target axis or targeting a target object to be surveyed. In some embodiments, the targeting unit has a first beam path for emitting optical radiation in the direction of the target object to be surveyed and a second beam path for receiving a component of the optical radiation, which is reflected from the target object, by way of an optoelectronic receiving element. In some embodiments, at least one of the beam paths, has an optical element, which is implemented having an optically transparent, deformable volume body, and which has at least one interface toward a medium having an optical index of refraction deviating from the volume body.

Abstract: A laser scanner device adapted to be mounted to a vehicle, the device comprising a LIDAR module, the LIDAR module comprising at least one laser source, characterized by a horizontal field of view of at least 60°, an instantaneous vertical field of view of at least ±2°, a scan resolution of at least one point per 0.8° in horizontal and vertical direction, and a frame rate of at least 10 Hz for scanning at least the entire horizontal and instantaneous vertical field of view with said scan resolution.

Abstract: Some embodiments of the invention relate to a surveying apparatus in the form of a scanner comprising a beam deflection unit, such a beam deflection unit and a measuring method to be carried out with said surveying apparatus. The surveying apparatus comprises a radiation source for generating measurement radiation and a detector for receiving reflected measurement radiation, called reflection radiation for short, which was reflected at an object of interest, wherein measurement radiation and reflection radiation have substantially the same optical path. Situated in said optical path there is a beam deflection unit mounted rotatably about a rotation axis and serving for adjustably aligning the measurement radiation and for capturing the reflected radiation.

Abstract: A device having a scan function comprising an electro-optical distance measuring element having a laser axis as the target axis, a motorized optical deflection unit, which deflects the target axis by a deflection angle, and an angle measuring element for determining at least one angular position of the deflection unit. First measurement of angle coordinates of a reticle in a first angular position of the deflection unit as the first position, and second measurement of angle coordinates of the reticle in a second angular position of the deflection unit as the second position. The first and second measurements of the reticle are carried out on the basis of images taken with a camera, the optical axis of which is deflected by the deflection unit, and calibration parameters are determined on the basis of the angular positions and the angular coordinates in the first and second positions.

Abstract: Embodiments described herein include a surveying apparatus for surveying a measurement scenery. The surveying apparatus may include a base defining a vertical axis; a support tiltable around the vertical axis; a telescope unit tiltable around the vertical axis and around a horizontal axis that is orthogonal to the vertical axis and comprises means for distance measurement; motor means for rotational driving of the support and the telescope unit; and angle determination means for detecting an orientation of the telescope unit with respect to the base. In some embodiments, the telescope unit comprises a first camera capable to take a visible image of the measurement scenery and/or means for capturing coordinates of 3D-points of the measurement scenery. In some embodiments, the surveying apparatus comprises a display capable to display at least a portion of the visible image taken by the first camera and/or at least a portion of the 3D-points.

Abstract: Embodiments described herein relate to a measuring device, comprising a base that defines a vertical axis, an assembly that can be pivoted about the vertical axis relative to the base, and a beam deflecting unit for varying the orientation of a measurement axis, wherein the beam deflecting unit can be rotated about a horizontal axis relative to the assembly. The measuring device further has a distance measurement functionality for measuring distance by means of the measurement radiation, an angle measurement functionality for determining an orientation of the measurement axis relative to the base, a control and processing unit for processing data and for controlling the measuring device, and a scanning functionality, wherein when the scanning functionality is executed, a scan is performed, and a point cloud comprising the scan points is produced. The assembly also has an imaging system. The measuring device may have a single-point measurement mode.

Abstract: Optoelectronic surveying device for distance and/or position determination comprising a radiation source for generating optical measurement radiation of a first wavelength, wherein the measurement radiation is emitted in an oriented manner into free space. The radiation source is designed such that the first wavelength is in the range between 1210 nm and 1400 nm and the power of the emitted measurement radiation is at least 14 mW in the chronological and spatial average.

Abstract: An optical measuring system determines coordinates of points for distance measurement. The measuring system includes a radiation source for emitting electromagnetic radiation and a receiving unit having a filter unit for extracting electromagnetic radiation in a defined wavelength range and having, a detector, such that the radiation extracted by the filter unit is detectable by the detector. The filter unit includes at least two mirror elements which are at least partly reflective and constructed in a multilayered fashion. The mirror elements are substantially parallel to one another. Two adjacent mirror elements in each case enclose a cavity and are arranged at a specific distance from one another. An optical thickness is defined by a refractive index of the cavity and by the distance between the mirror elements. Optical thickness varying means operate to varying the optical thickness, such that an extractable wavelength range of the filter unit is varied.

Abstract: The invention relates to a distance measurement apparatus for measuring the time of flight of electromagnetic signals, having at least: a transmitter for transmitting coded transmission signals according to a pattern specified by a coder, a receiver for detecting the signals reflected by at least one object as receive signals, a counter unit having a time counter for writing time counter values, which are generated in each case with the transmission of the transmission signals and the receipt of the receive signals, into at least one register, and a control and evaluation unit for calculating the time of flight on the basis of decoding the receive signals and reading the register of the counter unit.