Abstract: A measuring device for optically measuring a distance to a target object including an emitter device for emitting an optical measuring beam to the target object, a capturing device comprising a detection surface for detecting an optical beam returned by the target object, and an evaluation device. The detection surface has a plurality of pixels, each pixel having at least one light-sensitive element and each of the plurality of pixels is connected to the evaluation device. The emitting device and the capturing device are configured in such a manner that the optical measurement beam returned by the target object simultaneously illuminates a plurality of pixels. The evaluation device is configured in such a manner that detection signals of a plurality of pixels are guided to at least one of the plurality of distance determining devices.

Abstract: A method for operating a laser device, which has a laser-active solid-state body including a preferably passive Q switch, in which pumped light is applied to the laser device in order to generate a laser pulse. The laser device and/or an optical link between the laser device and a pumped light source supplying the pumped light is at least partially acted upon by an optical test pulse in order to check the integrity of a/the optical link between the laser device and a pumped light source supplying the pumped light.

Abstract: A handheld distance measuring instrument includes a first emission device, a first reception device and a second reception device. The first emission device is configured to emit an optical measurement radiation onto a target object. The first reception device is configured to detect the radiation returning from the target object. The second reception device is configured in order to detect a reference radiation internal to the instrument. The reception devices respectively include a first detector unit, a second detector unit, a first time measurement unit, and a second time measurement unit. The first time measurement unit is configured to be connected selectively to the first detector unit and to the second detector unit. The second time measurement unit is configured to be connected selectively to the first detector unit and to the second detector unit.

Abstract: An ignition device, for an internal combustion engine of a motor vehicle, having a laser device for generating laser pulses, and having an optical fiber device which is at least optically connected to the laser device for supplying the laser device with pumped light. The optical fiber device is configured and situated in the region of the laser device such that radiation incident in the region of the laser device and/or in the region of a combustion chamber associated with the laser device is injected into the optical fiber device. The optical fiber device advantageously allow the radiation which is injected into the optical fiber device to be analyzed, using a detector which is remotely situated, without having to provide additional, separate optical fiber devices for the radiation to be analyzed, because is conducted directly via the same optical fiber that is already used for supplying pumped light.

Abstract: The disclosure relates to a measuring apparatus, in particular a handheld measuring apparatus, for measuring a target object in a multidimensional manner, wherein the distance to individual object points of the target object is sequentially measured, in particular using a phase-measuring system, which apparatus has at least: a transmitting device for emitting optical measuring radiation towards the target object; a receiving device having a detection area for detecting optical measuring radiation returning from the target object; a scanning system for deflecting the optical measuring radiation, and an evaluation device for determining measured distance values. The detection area of the receiving device has a plurality of pixels, wherein each pixel has at least one SPAD, and wherein each of the plurality of pixels is connected to the evaluation device. The disclosure also relates to a measuring device having such a measuring apparatus.

Abstract: The disclosure relates to a measurement device for optically measuring a distance to a target object, in particular a handheld measurement device. The disclosure relates to such a measurement device having a transmitting device for transmitting an optical measurement beam to a target object; a receiving device having a detection surface for detecting the optical measurement beam returning from the target object, wherein the detection surface has a plurality of pixels, and each pixel has at least one light-sensitive element; and a reference device having a detection surface for detecting a device-internal reference beam. According to the disclosure, the detection surface of the reference device has a plurality of pixels, wherein each pixel has at least one light-sensitive element.

Abstract: A sensor unit for detecting reference and measurement radiation for a distance measurement device has a sensor element and an optical shielding device. The sensor element has a first detection region for detecting measurement radiation and a second detection region for detecting reference radiation. The optical shielding device is positioned in relation to the sensor element and fastened, and the optical shielding device optically separates the first and second detection regions from each other. The optical shielding device further comprises a first recess and a second recess which are permeable to optical radiation of a first wavelength range.

Abstract: A handheld measuring device for optical distance measurement includes a transmitting device, a receiving device, an evaluation device, and a homogenizing device. The transmitting device is configured to transmit periodically modulated optical measurement radiation toward a target object. The receiving device is configured to detect optical measurement radiation returning from the target object. The evaluation device is configured to receive and evaluate detection signals of the receiving device. The evaluation device comprises a plurality of accumulation devices configured to accumulate detection signals. The evaluation device conducts detection signals during a sampling time window from a plurality of sampling time windows temporally schematically changeably to an assigned accumulation device from the plurality of accumulation devices, such that the accumulation device accumulates the detection signals during the sampling time window.

Abstract: A diode laser having a beam-forming device and a method for producing it are described. The diode laser includes at least one diode laser bar, the diode laser bar having a multitude of emitters, the emitters being disposed next to each other in the direction of their longitudinal axes. The diode laser includes a beam-forming device assigned to the diode laser bar, for the laser beam emerging from the diode laser bar, the beam-forming device having a light-guide device having a plurality of fibers, into which the laser beam is coupled. The maximum thickness of the optical fibers at their end facing the diode laser bar is considerably smaller than their width.

Abstract: A measuring device for optically measuring a distance to a target object including an emitter device for emitting an optical measuring beam to the target object, a capturing device comprising a detection surface for detecting an optical beam returned by the target object, and an evaluation device. The detection surface has a plurality of pixels, each pixel having at least one light-sensitive element and each of the plurality of pixels is connected to the evaluation device. The emitting device and the capturing device are configured in such a manner that the optical measurement beam returned by the target object simultaneously illuminates a plurality of pixels. The evaluation device is configured in such a manner that detection signals of a plurality of pixels are guided to at least one of the plurality of distance determining devices.

Abstract: A photon detector is disclosed that includes, in addition to an immobilisable photon-sensitive element, a photon transmission element. The photon detector is configured such that it can vary photon intensities impacting upon the photon-sensitive element and transmitted by the photon transmission element, for example, by modifying an absorption property or a defocussing property of the photon transmission element. Also, the immobile photon-sensitive element, which can be, for example a SPAD (Single Photon Avalanche Diode), always operates close to the optimal operating range and below an immobilisation range. A distancing device that includes this type of photo detector is also disclosed.

Abstract: A measuring device for optically measuring a distance to a target object includes an emitter device for emitting an optical measuring beam to the target object, a capturing device including a detection surface for detecting an optical beam returned by the target object, and an evaluation device. The detection surface has a plurality of pixels, each pixel having at least one SPAD (single photon avalanche diode) and each of the plurality of pixels is connected to the evaluation device. The emitting device and the capturing device are configured in such a manner that the optical measurement beam returned by the target object simultaneously illuminates a plurality of pixels. The evaluation device is configured in order to determine the distance between the measuring device and the target object based on the evaluation of detection signals of several pixels.

Abstract: A measuring apparatus for optically measuring a distance to a target object is described. The measuring apparatus has a transmitting device for emitting periodically modulated optical measuring radiation towards the target object, a receiving device for detecting optical measuring radiation which returns from the target object, and an evaluation device for receiving and evaluating detection signals from the receiving device. The measuring apparatus also has a calibration device for calibrating the measuring apparatus, wherein the calibration device is designed to calibrate the measuring apparatus on the basis of detection of uncorrelated radiation which does not correlate with the modulated measuring radiation emitted by the transmitting device. In this case, the uncorrelated radiation may be in the form of background radiation. Alternatively, uncorrelated measuring radiation can be emitted by the transmitting device and can be detected by the receiving device.

Abstract: A method for operating a laser device, which has a laser-active solid-state body including a preferably passive Q switch, in which pumped light is applied to the laser device in order to generate a laser pulse. The laser device and/or an optical link between the laser device and a pumped light source supplying the pumped light is at least partially acted upon by an optical test pulse in order to check the integrity of a/the optical link between the laser device and a pumped light source supplying the pumped light.

Abstract: An ignition device, in particular for an internal combustion engine of a motor vehicle, having a laser device for generating laser pulses, and having an optical fiber device which is at least optically connected to the laser device for supplying the laser device with pumped light. The optical fiber device is configured and situated in the region of the laser device in such a way that radiation incident in the region of the laser device and/or in the region of a combustion chamber associated with the laser device may be injected into the optical fiber device. The disclosed configuration of the optical fiber device advantageously allow the radiation which is injected into the optical fiber device to be analyzed, in particular using a detector which is remotely situated, without having to provide additional, separate optical fiber devices for the radiation to be analyzed, because the radiation to be analyzed may be conducted directly via the same optical fiber that is already used for supplying pumped light.

Abstract: A method is described for operating an ignition device, in particular in an internal combustion engine, having a combustion chamber window for optically connecting the ignition device to a combustion chamber. An optical signal which may be detected in the region of the combustion chamber window is evaluated to deduce a state of the combustion chamber window. In particular, soiling of the combustion chamber window may be identified in this manner.

Abstract: The invention relates to a method for optically measuring an undercarriage and/or for dynamically testing undercarriage components of a motor vehicle (1). At least one wheel (2) and/or at least one section of the vehicle (1) is illuminated with a light pattern (15) of structured light by means of an illumination device (11), and the reflected light (4?) is received by means of an imaging sensor unit (12, 13) and evaluated in an evaluation unit (16). The invention also relates to a device for carrying out the method. Even in suboptimal light conditions in the surrounding environments, a robust measurement is achieved because the structured light is emitted by the illumination device in a narrow band in a specified narrow emission wavelength range, and because the light is likewise detected by means of the sensor unit (12, 13) in a receiving wavelength range corresponding to the emission wavelength range and is evaluated in the evaluation unit (16), wherein foreign light influences are removed.

Abstract: An interferometric measuring device for measuring layer thicknesses of partially transparent layers on substrates, especially of wear protection layers based on carbon, having a scanning device which scans these layers automatically in its depth direction, using which an interference plane is displaceable relative to the layer structure, having an interferometer part that has a white light interferometer and/or a wavelength-scanning interferometer. Also described is a corresponding evaluation method.

Abstract: An interferometric measuring device for measuring layer structure of a plurality of layers has: a scanning apparatus for displacing an interference plane relative to the layer structure; an interferometer part having a wavelength scanning interferometer; an image recorder recording the interfering radiation returning from a reference arm on an object arm, and producing electrical signals as output; and a downstream evaluation device for making available the measuring results.

Abstract: An interferometric measuring device for recording geometric data for surfaces of at least one object, including a beam supply section including a modulation interferometer fed by a light source including temporarily coherent broadband radiation, a measuring interferometer system that is connected thereto and includes a plurality of probe units for emitting radiation of measuring beams onto the assigned surface locations and recording the radiation reflected by the surface locations, the radiation forming interference with radiation reflected by a related reference element system, and including a downstream receiving and evaluation device for determining geometric data on the basis of the interfering radiation.