Abstract: The disclosure relates to a laser ranging calibration method and a laser range finder including a line laser generation module, an image capturing module and a processing module. The line laser generation module projects a line laser beam to a first direction from a first position. The image capturing module at a second position captures a ranging image in the first direction. When the ranging image includes a calibration target image of a calibration target having a first width, the processing module calculates a measured width of the calibration target according to a position of a line spot image of a laser spot on the calibration target image, obtains a calibration parameter according to the first width and the measured width, performs range finding according to the laser spot shown in the ranging image, and performs a calibration task using a calibration parameter.

Abstract: A depth pixel of a three-dimensional image sensor includes a first photo gate which is turned on/off in response to a first photo control signal, a first photo detection area configured to generate first charges based on a received light reflected from a subject when the first photo gate is turned on, a first transmission gate which is turned on/off in response to a first transmission control signal, a first floating diffusion area configured to accumulate the first charges generated from the first photo detection area when the first transmission gate is turned on, and a first compensation unit configured to generate second charges which are different from the first charges based on ambient light components included in the received light to supply the second charges to the first floating diffusion area.

Abstract: An optical carrier based microwave interferometry (OCMI) system for measuring a physical, chemical, or biological property broadly comprises an optical carrier signal source, a waveguide, a microwave envelope signal source, a microwave modulator, an optical interferometer, a detector, and an analyzer. An optical carrier signal is modulated with a microwave envelope signal and transmitted through an optical interferometer. The optical signal is interrogated in microwave domain to obtain interference patterns or absorption/emission spectra corresponding to the physical, chemical, or biological property being measured.

Abstract: Methods and systems for providing a high speed scanner tracker are disclosed. The scanner tracker can include a mirror assembly that rotates within a housing about a first axis. Moreover, the mirror can be tilted about a second axis. Pulses of light can be directed to and received from a selected location or target surface located within a target volume by selectively controlling the rotational and tilt angles of the mirror relative to a laser associated with the scanner tracker assembly.

Abstract: A method of determining a timing of an occurrence of a signal includes: propagating the signal (such as an electrical signal) along a series of digital delay elements, or a delay line. Each delay element can have at least two states, each indicative of presence or absence of a signal. The distribution of states of at least a portion of the delay elements along the delay line are recorded multiple times during the time it takes a point (such as an edge) in the signal to propagate through the portion of the delay elements. The multiple recorded distributions are combined to determine the timing of occurrence of the signal to a greater resolution than the minimum system clock period and the minimum delay of each delay element.

Abstract: An enhanced distance detection system for an autonomous or semi-autonomous vehicle is described here. The distance detection system includes a distance detector, which may have a limited scope of distance detection, and a directional controller, which allows extending the dimension or scope of the distance detector as the vehicle travels and performs missions. The directional controller can change the detection direction of the distance detector with a motorized gimbal or functionally similar system, and the change in the detection direction can be integrated with the status of and other instructions executed by the vehicle.

Abstract: A method to spread laser photon energy over separate pixels to improve the likelihood that the total sensing time of all the pixels together includes the laser pulse. The optical signal is spread over a number of pixels, N, on a converter array by means of various optical components. The N pixels are read out sequentially in time with each sub-interval short enough that the integration of background photons competing with the laser pulse is reduced. Likewise, the pixel read times may be staggered such that laser pulse energy will be detected by at least one pixel during the required pulse interval. The arrangement of the N pixels may be by converter array column, row, two dimensional array sub-window, or any combination of sub-windows depending on the optical path of the laser signal and the capability of the ROIC control.

Abstract: We describe a touch sensitive holographic image display device for holographically projecting a touch sensitive image at an acute angle onto a surface on which the device is placed. The device includes holographic image projection optics comprising at least one coherent light source illuminating a spatial light modulator (SLM), output optics to project a hologram onto an acute angle surface, and a remote touch sensing system to remotely detect a touch of a location within or adjacent to the holographically displayed image. A control system is configured to provide data defining an image for display, to receive detected touch data, and to control the device responsive to remote detection of a touch of a the displayed image.

Abstract: A silicon photomultiplier array of microcells including a photon avalanche diode and an electronic circuit configured to provide a first one-shot pulse and a second one-shot pulse based on a detected current flowing through the photon avalanche diode. The microcells arranged in rows and columns with each microcell of a respective row connected to a respective row data bus connected to a row counter configured to count one or more first one-shot pulses for a predetermined time period, a pixel adder configured to sum the count, and a digital-to-analog converter connected to the pixel adder to convert sum to an analog signal representative of an energy readout. A timing logic circuit configured to provide a validation signal to a counter control logic circuit, and the counter control logic circuit configured to provide one of a start signal, a stop signal, and a reset signal to the row counter.

Abstract: An image sensor includes a photo gate controller configured to generate a plurality of demodulated signals respectively corresponding to a plurality of rows of a pixel array and a photo gate driver configured to adjust a phase of the demodulated signals using a source clock signal to remove power, voltage and temperature (PVT) noise and to apply the phase-adjusted demodulated signals to the pixel array. The image sensor matches the phases of the respective demodulated signals using the source clock signal generated based on a reference clock signal, thereby increasing the quality of depth images.

Abstract: A method for measuring and registering three-dimensional (3D) by measuring 3D coordinates with a 3D scanner in a first registration position, measuring two-dimensional (2D) coordinates with the 3D scanner by projecting a beam of light in plane onto the object while the 3D scanner moves from the first registration position to a second registration position, measuring 3D coordinates with the 3D scanner at the second registration position, and determining a correspondence among targets in the first and second registration positions while the 3D scanner moves between the second and third registration positions.

Abstract: A LiDAR sensor can include a laser, a directional sensor, a window, an electromagnetic pulse receiving sensor, and a processor. The laser can be configured to emit a narrow electromagnetic pulse. Further, the directional sensor can be configured to measure the direction of the narrow electromagnetic pulse emitted by the laser. The narrow emitted electromagnetic pulse can pass through the window. The pulse can then be reflected by at least the window and an object external from the LiDAR sensor, creating at least two reflected pulses. The electromagnetic pulse receiving sensor can be configured to measure the two reflected pulses resulting from the narrow pulse emitted by the laser. The processor can be configured to receive information from the sensors, indicating a position of the object relative to the LiDAR sensor. Further, the processor can be configured to measure the intensity of the pulse being reflected by the window.

Abstract: A time-of-flight camera, having a time-of-flight sensor, which has at least one receiving pixel and is configured as a photomixing detector, having an illumination means, and having a modulator, which is connected to the time-of-flight sensor and to the illumination means, wherein a control sensor is arranged in the region of the illumination means such that at least some of the radiation emitted by the illumination means can be received by the control sensor is provided.

Abstract: One embodiment of a source device being able to monitor the premises of a target device before and after permission from the source device is granted to the target device for it to view a data which is currently inaccessible to the target device. The source device is also able to remotely and dynamically deny the target device access to the data after access has been granted, within a reasonable time of viewing an interesting image transmitted from the target device to the source device in correspondence to the premises monitoring process.

Abstract: LiDAR (light detection and ranging) systems use one or more emitters and a detector array to cover a given field of view where the emitters each emit a single pulse or a multi-pulse packet of light that is sampled by the detector array. On each emitter cycle the detector array will sample the incoming signal intensity at the pre-determined sampling frequency that generates two or more samples per emitted light packet to allow for volumetric analysis of the retroreflected signal portion of each emitted light packet as reflected by one or more objects in the field of view and then received by each detector.

Abstract: A method of determining a wade depth (dMax) in relation to a vehicle (1) when at least partially submerged in water. An attitude of the vehicle (1) is determined and a first height (dSensed) of the surface of the water measured relative to a first reference point on the vehicle (1). The wade depth (dMax) is determined based on the attitude of the vehicle (1) and said first height (dSensed). Alternatively, or in addition, the travel height (HS) of a vehicle suspension is determined. Aspects of the invention also relates to a system and a vehicle (1).

Abstract: A display system is provided for a vehicle. The display system includes a data source configured to provide terrain data with detached objects that are detached from ground terrain and attached objects that are attached to ground terrain; a processing unit coupled to the data source configured to receive the terrain data and to distinguish the detached objects from the attached objects to generate display commands for a three-dimensional view that comprises graphical elements representing both the detached objects and the attached objects; and a display device coupled to the processing unit and configured to receive the display commands and operable to render the common three-dimensional view to thereby allow viewing of the detached objects and the attached objects.

Abstract: Highly accurate electro-optical time of flight distance measuring device for determining a distance to a target, including a transmitter for sending out a pulse shaped optical radiation to the target as well as a receiver for an optical signal built for turning the optical signal to an electrical signal, and a filter with a transfer function for filtering the electrical signal whereby the filter is built in such a way that its transfer-function is of at least 4th order, in particular 5th or 7th or higher order, so that aliasing is suppressed. Further a waveform-sampler, as an analog-to-digital-converter, for digitalizing the pulse shape from the filtered electrical signal as time- and value-quantized digital data, and a computation means for a numerical evaluation of the distance according to the pulse shape or a pulse shape representing numerical signature from the digital data.

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: Active imaging systems for plant growth monitoring acquire images in which each pixel represents an absolute NDVI value obtained with active illumination.

Abstract: User wearable eye glasses include a pair of two-dimensional cameras that optically acquire information for user gestures made with an unadorned user object in an interaction zone responsive to viewing displayed imagery, with which the user can interact. Glasses systems intelligently signal process and map acquired optical information to rapidly ascertain a sparse (x,y,z) set of locations adequate to identify user gestures. The displayed imagery can be created by glasses systems and presented with a virtual on-glasses display, or can be created and/or viewed off-glasses. In some embodiments the user can see local views directly, but augmented with imagery showing internet provided tags identifying and/or providing information as to viewed objects. On-glasses systems can communicate wirelessly with cloud servers and with off-glasses systems that the user can carry in a pocket or purse.

Abstract: In order to maximize the dynamic range and depth of field for a depth camera used in a time of flight system, the light source is modulated at a plurality of different frequencies, a plurality of different peak optical powers, a plurality of integration subperiods, a plurality of lens foci, aperture and zoom settings during each camera frame time. The different sets of settings effectively create subrange volumes of interest within a larger aggregate volume of interest, each having their own frequency, peak optical power, lens aperture, lens zoom and lens focus products consistent with the distance, object reflectivity, object motion, field of view, etc. requirements of various ranging applications.

Abstract: An aircraft docking system is configured to be located at a docking site. The system comprises distance determining means configured to determine, using electromagnetic radiation signal reception means, at least a distance between the system and an aircraft. The distance determining means are further configured to measure at least one property of a receiver signal received by the signal reception means, the property being related to the visibility at the docking site, compare said measure of the at least one receiver signal property with a threshold value and, depending on the comparison, provide a signal indicative of whether or not the visibility at the docking site is good enough to allow safe docking of the aircraft.

Abstract: A dimensioning system that determines the dimensions and volume of an object by using a three-dimensional camera that measures the distance to every reflective point in its field of view with a single pulse of light. The distance is computed by the time of flight of the pulse to each camera pixel. The accuracy of the measurement is augmented by capture of the laser pulse shape in each camera pixel. The camera can be used on an assembly line to develop quality control data for manufactured objects or on a moving or stationary system that weighs as well as dimensions the objects. The device can also ascertain the minimum size of a box required to enclose an object.

Abstract: An atmospheric cloud height, humidity profile, or temperature measuring method and arrangement are provided. In the method, pulsed laser signals (14) are transmitted through transmission optics (2, 3, 4, 5, 6) to the atmosphere and the signal (15) reflected or scattered back from there is detected. An interference filter (3) is used in the optics, in order to stabilize the transmitted optical power to the center wavelength of the interference filter (3).

Abstract: A pixel readout circuit for use with an imaging pixel array, comprising: an input channel for receiving an image signal corresponding to an electrical output of a photosensitive element of the pixel; and an electronic circuit interconnected between an input channel and an output readout utility. The electronic circuit comprises a capacitive unit, and a single analyzer. The capacitive unit is controllably linked to the input channel for accumulating a charge corresponding to received intensity generated by the pixel during a single frame period, and is connected to the output readout utility.

Abstract: An aircraft capable of hovering, and characterized by having at least one sensor, which has a plane sweep region and is designed to acquire, when the aircraft is maneuvering, values of respective distances between first points on an obstacle within the plane sweep region, and a second point on the aircraft; and a control unit designed to generate an alarm signal when at least one of the first points lies within a safety region containing the second point on the aircraft.

Abstract: An electronic device that includes a sensor module, a measuring module and a near field communication (NFC) device. The sensor module receives an input signal. The measuring module measures the strength of the input signal and determines whether the input meets a predefined threshold. If the strength of the input signal meets the predefined threshold, the measuring module activates the NFC device. If the strength of the input signal does not meet the predefined threshold, the measuring module de-activates the NFC device.

Abstract: A distance measurement method, includes measuring a distance to an object by means of a distance measurement circuit of a distance measurement apparatus and by scanning a light beam; designating a first mode which controls a projection angle of the light beam so that sampling positions in a given number of successive scans do not overlap, when the distance to the object is greater than or equal to a threshold value, by using the processor; and designating a second mode which controls the projection angle of the light beam so that the sampling positions overlap in each scan, when the distance to the object is less than the threshold value, by using the processor.

Abstract: A method and apparatus for identifying a number of diameters for a group of trees. An unmanned aerial vehicle moves on a route through the group of trees at a height that is configured to allow measurement of the number of diameters for the group of trees by a sensor system associated with the unmanned aerial vehicle. Information is generated about the number of diameters for the group of trees using the sensor system associated with the unmanned aerial vehicle.

Abstract: Scanning distance measuring equipment includes a light emitter/receiver and a deflector for deflecting and reflecting measurement light emitted from the light emitter/receiver to outside through an optical window. The deflector is provided with a first deflection mechanism including a movable unit swingable about a first axis and a drive unit for driving to swing the movable unit; a second deflection mechanism for driving to rotate the first deflection mechanism about a second axis perpendicular to the first axis; and a contactless power supply unit including a second coil that is located to rotate about the second axis along with the rotating second deflection mechanism, and a first coil that is located to face the second coil on a common axis.

Abstract: A method for determining a distance to an object using an amplitude modulated continuous wave range imaging device includes emitting a modulated illumination signal. The modulated illumination signal is modulated with a pseudo random code. An image sensor is modulated based on the pseudo random code to capture a plurality of samples of the modulated illumination signal reflected from the object. A phase shift between the plurality of samples and the modulated illumination signal is determined.

Abstract: The configuration includes a laser range finder (110), a scan mechanism (120), a distance-data acquiring unit (130), a memory (160), which stores installation state information and detection-area information for each measurement direction, a human-body determining unit (140), a detection area-information updater (140), which updates detection-area information under a predetermined condition, and the alert-output control unit (150). The human-body determining unit (140) extracts a portion that possibly corresponds to a human body in an object that has invaded or moved, which is found out by comparison with the detection-area information based on the acquired distance information, and determines whether or not a rest of the respective extracted portions is a human body based on a movement state of each of the extracted portion in chronological order. The rest of the extracted portions excludes the extracted portions where a movement distance within a predetermined time is within a predetermined distance.

Abstract: Electronic devices may include time-of-flight (ToF) image pixels. Each ToF pixel may include a photodiode, a first capacitor coupled to the photodiode via a first transfer gate, a second capacitor coupled to the photodiode via a second transfer gate, and a third capacitor coupled to the photodiode via a third transfer gate. The first transfer gate may be turned on for a given duration to store a first charge in the first capacitor. The second transfer gate may be turned on for the given duration to store a second charge in the second capacitor. The third transfer gate may be turned on for a duration that is longer than the given duration to store a third charge in the third capacitor. Depth information may be computed based on the first, second, and third stored charges and a corresponding pixel constant.

Abstract: An apparatus for measuring intensity and/or range characteristics of an object(s), comprising: a signal source to emit modulation signals at a frequency(s); an illuminator to illuminate the object(s) by a first modulation signal; a sensor comprising a pixel(s), wherein the sensor creates a sampled correlated signal by sampling the correlation of a backscattered signal with a second modulation signal within the pixel; and a processor to determine range/intensity characteristics of component returns within the pixel(s) by comparing sampled correlated signals using measurements(s), wherein the measurement(s) comprise first and second modulation signals having a characteristic(s) selected from: (a) two or more different modulation frequencies, (b) a different modulation frequency(s) and an offset of the correlation waveform, and (c) another different modulation frequency(s) and one selected from: the zeroth spatial frequency of the signal returns versus range and an approximation of the zeroth spatial frequency o

Abstract: An improved vision-based system generates object detection corresponding to different viewing areas based on vehicle speed. At lower vehicle speeds, the system covers a wider field of view and a near zone while at higher vehicle speeds the system covers a normal or narrower field of view and a far zone. The system includes a lens package having a movable lens, an image sensor and an image transformer. The movable lens is movable between a first position representing a wide angle view and a second position representing a normal angle view. Each of these views generates an image such that a wide angle view generates a wide angle image and a normal angle view generates a normal angle image. The wide angle view is associated with the vehicle's passive safety systems while the normal angle view is associated with the vehicle's active safety systems.

Abstract: Systems in accordance with embodiments of the invention can perform parallax detection and correction in images captured using array cameras. Due to the different viewpoints of the cameras, parallax results in variations in the position of objects within the captured images of the scene. Methods in accordance with embodiments of the invention provide an accurate account of the pixel disparity due to parallax between the different cameras in the array, so that appropriate scene-dependent geometric shifts can be applied to the pixels of the captured images when performing super-resolution processing. In a number of embodiments, generating depth estimates considers the similarity of pixels in multiple spectral channels. In certain embodiments, generating depth estimates involves generating a confidence map indicating the reliability of depth estimates.

Abstract: Based on an image imaged by an imaging unit (2), feature points of a plurality of objects present around a vehicle are detected by a feature point detecting unit (35). A first distance from the feature point to the imaging unit (2) is calculated based on a temporal change of the feature point. A second distance from a certain object included in the plurality of objects present in the image to the imaging unit is calculated using some pixels of the certain object. The first distance of the plurality of feature points, other than the certain feature point, simultaneously detected by the feature point detecting unit (35) is modified based on a ratio of the first distance and the second distance.

Abstract: A 3D image sensor includes a depth pixel that includes; a photo detector generating photo-charge, first and second floating diffusion regions, a first transfer transistor transferring photo-charge to the first floating diffusion region during a first transfer period in response to a first transfer gate signal, a second transfer transistor transferring photo-charge to the second floating diffusion region during a second transfer period in response to a second transfer gate signal, and an overflow transistor that discharges surplus photo-charge in response to a drive gate signal. Control logic unit controlling operation of the depth pixel includes a first logic element providing the first transfer gate signal, a second logic element providing the second transfer gate signal, and another logic element providing the drive gate signal to the overflow transistor when the first transfer period overlaps, at least in part, the second transfer period.

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: The range image sensor is a range image sensor which is provided on a semiconductor substrate with an imaging region composed of a plurality of two-dimensionally arranged units (pixel P), thereby obtaining a range image on the basis of charge quantities QL, QR output from the units. One of the units is provided with a charge generating region (region outside a transfer electrode 5) where charges are generated in response to incident light, at least two semiconductor regions 3 which are arranged spatially apart to collect charges from the charge generating region, and a transfer electrode 5 which is installed at each periphery of the semiconductor region 3, given a charge transfer signal different in phase, and surrounding the semiconductor region 3.

Abstract: The present invention pertains to systems and methods for the capture of information regarding scenes using single or multiple three-dimensional LADAR systems. Where multiple systems are included, those systems can be placed in different positions about the imaged scene such that each LADAR system provides different viewing perspectives and/or angles. In accordance with further embodiments, the single or multiple LADAR systems can include two-dimensional focal plane arrays, in addition to three-dimensional focal plane arrays, and associated light sources for obtaining three-dimensional information about a scene, including information regarding the contours of the objects within the scene. Processing of captured image information can be performed in real time, and processed scene information can include data frames that comprise three-dimensional and two-dimensional image data.

Abstract: The invention relates to an electro-optical distance measuring device comprising a transmitting unit comprising a light source for emitting intensity-modulated optical radiation, a receiving unit for receiving a portion of the optical radiation, said portion being reflected from a target object, by means of a photosensitive electrical component and for converting it into an electrical reception signal. Furthermore comprising a conditioning unit for conditioning the reception signal comprising at least one amplifier stage, an analog-to-digital converter fox digitizing the conditioned reception signal, and an electronic evaluation unit, which is designed in such a way that a distance from the distance measuring device to the target object, can be determined on the basis of a signal propagation time with the aid of the digitized reception signal. According to the invention, in this case the amplifier stage is designed in such a way that it has a non-linear input-output characteristic.

Abstract: An optical measurement device is provided includes a tracker device configured to emit a first beam of light and receive a portion of the first beam of light reflected off of a target. The first beam of light being emitted from a gimbal location, the tracker device further including an absolute distance meter configured to determine the distance to the target. A scanner device is provided that is configured to emit a second beam of light along a pathway without reversing direction and receive a portion of the second beam of light reflected off an object. The second beam of light being emitted from the gimbal location, the scanner further being configured to determine the distance to the object based at least in part on the speed of light.

Abstract: An array-based light detection and ranging (LiDAR) unit includes an array of emitter/detector sets configured to cover a field of view for the unit. Each emitter/detector set emits and receives light energy on a specific coincident axis unique for that emitter/detector set. A control system coupled to the array of emitter/detector sets controls initiation of light energy from each emitter and processes time of flight information for light energy received on the coincident axis by the corresponding detector for the emitter/detector set. The time of flight information provides imaging information corresponding to the field of view. Interference among light energy is reduced with respect to detectors in the LiDAR unit not corresponding to the specific coincident axis, and with respect to other LiDAR units and ambient sources of light energy. In one embodiment, multiple array-based LiDAR units are used as part of a control system for an autonomous vehicle.

Abstract: A laser rangefinder includes a laser emitter for emitting parallel laser beams, a micro electro mechanical system reflector including a plurality of micro reflecting units and configured for reflecting the parallel laser beams toward different points on an object, a micro electro mechanical system photoreceiver configured for receiving the laser beams reflected by and from the different points on the object, a time interval counter configured for recording the time intervals between a first time when the laser emitter emitting the parallel laser beams and second times when the laser beams are received by the micro electro mechanical system photoreceiver, and a processor configured for calculating the distances to the different points of the object based on the time intervals.

Abstract: A distance measurement method is provided that includes the steps of transmitting a laser signal to a target, receiving outside signals reflected by the target, converting the outside signals into an analog voltage signal, sampling the analogy voltage signal to obtain digital signals, storing the digital signals at storage addresses in a one-to-one relationship, repeating the above steps, accumulating numeral values at each storage addresses to obtain an accumulated value, outputting the accumulating value which exceeds a constant and corresponds to a time point, and calculating the distance between a laser range finding device and the target according to the time point corresponding to the output accumulated value.

Abstract: A measurement device for measuring an optical distance of an object includes an emission device configured to emit a first signal towards the object. The measurement device further includes a modulator device configured to modulate the first signal and a reception device configured to detect a second signal. The measurement device also includes an analysis device configured to receive and analyze the second signal. The measurement device further includes a calibration device configured to calibrate the measurement device with the modulator device turned on and with the emission device operated below a pre-definable power threshold value.

Abstract: A scanning optical range finder in a mobile robot includes an optical emitter circuit, a non-imaging optical element, an optical detector circuit, and a ranging circuit. The non-imaging optical element is arranged to receive optical signals at an entrance aperture thereof responsive to operation of the optical emitter circuit, and to direct the optical signals to an output aperture thereof. The optical detector circuit is configured to receive the optical signals from the output aperture of the non-imaging optical element, and to generate detection signals based on respective phase differences of the optical signals relative to corresponding outputs of the optical emitter circuit. The ranging circuit is configured to calculate a range of a target from the phase differences indicated by the detection signals. Related devices and methods of operation are also discussed.

Abstract: A light propagation time camera system and a method for operating such a system, in which—in a distance measurement a first range-related variable is ascertained using a phase shift in an emitted and received signal for a first modulation frequency,—and in a control measurement a second range-related variable is ascertained, wherein the control measurement is performed at a second modulation frequency, which differs from the first modulation frequency, and the control measurement is performed with a smaller number of phases than the distance measurement is provided.