40 results about "Sensor plane" patented technology

The invention belongs to the technical field of high-precision positioning of large objects, and particularly relates to an error correction method and system suitable for a binocular vision system of a bridge erecting machine, and the method comprises the steps: installing the binocular vision system and at least three laser sensors at selected positions on the bridge erecting machine in a coplanar manner, and defining an installation reference surface as a sensor plane; a mark plane is arranged on the erected bridge to serve as a measuring basis; respectively measuring depth information from each laser sensor to the mark plane by using the laser sensors; based on the depth information, dynamically calculating a space angle deviation between a sensor plane and a mark plane in real time; generating a correction matrix for correcting coordinates according to the space angle deviation; and measuring the target object by using the binocular vision system to obtain an original coordinate, and calibrating the original coordinate by using the correction matrix. According to the method, systematic errors caused by non-parallel installation are fundamentally eliminated, and the accuracy of final positioning and the stability of results are remarkably improved.

The invention relates to the technical field of parking lot positioning, in particular to a vehicle positioning management system in a parking lot based on dynamic weight multi-sensor fusion. Comprising a multi-source sensor data acquisition unit; an environment entropy perception and weight pre-adjustment unit; a reinforcement learning weight optimization unit; and an edge end vehicle positioning management unit. According to the method, an image histogram entropy value and a UWB signal RSSI fluctuation variance are calculated in real time through a heterogeneous sensor array in combination with an environment entropy perception and weight pre-adjustment unit, meanwhile, a space correlation matrix is constructed through sensor plane coordinate mapping, and interference space correlation characteristics are extracted. Based on reinforcement learning, a causal correlation model of an environmental entropy change rate, interference characteristics and sensor failure time is established, a sensor failure window can be predicted in advance, the weight of each sensor accessing a fusion filter is dynamically adjusted, and the problems of environmental influence perception deficiency, sensor correlation analysis and failure pre-judgment are solved.

A system for determining pose of a lidar sensor in an environment in order to calibrate the lidar sensor. The system includes at least two calibration boards, each having a first edge and a second edge. There is a controller coupled to the lidar sensor to cause the lidar sensor to direct a lidar scan at the calibration boards. The controller causes the lidar sensor to receive a reflection of the lidar scan from the calibration boards and determine locations of a first crossing point on the first edge and a second crossing point on the second edge of the calibration boards. The controller determines a reference plane defined by the first and second crossing points of each of the calibration boards, performs a plane transform of the reference frame to obtain a lidar sensor plane and determine from the lidar sensor plane a pose of the lidar sensor.

The application belongs to the technical field of high-precision positioning of large objects, and particularly relates to an error correction method and system suitable for a binocular vision system of a bridge erecting machine, comprising: coplanarly installing a binocular vision system and at least three laser sensors at selected positions on the bridge erecting machine, and defining a sensor plane as an installation reference plane; setting a mark plane on a bridge that has been erected as a measurement reference; measuring depth information from each laser sensor to the mark plane by using the laser sensors; dynamically calculating a spatial angle deviation between the sensor plane and the mark plane in real time based on the depth information; generating a correction matrix for correcting coordinates according to the spatial angle deviation; and measuring a target object by using the binocular vision system to obtain original coordinates, and applying the correction matrix to calibrate the original coordinates. The application fundamentally eliminates systematic errors caused by non-parallel installation, and significantly improves the accuracy of final positioning and the stability of results.

The invention belongs to the technical field of two-dimensional information source direction finding of a sensor array, and particularly relates to a two-dimensional information source direction finding method based on a fully-filled rectangular area array. A plurality of uniform linear array combinations of three fully-filled rectangular area arrays located in X-Y, Y-Z and X-Z sensor planes in a three-dimensional Cartesian rectangular coordinate system are utilized to construct and solve an MYW linear equation set and a rooting polynomial by utilizing uniform linear array data based on a degraded spatial ARMA model, and a corresponding signal source phase difference is estimated; giving out phase difference and uniform linear array conditions required by automatic pairing until all information sources are paired; and finally, calculating an information source azimuth angle and an elevation angle. According to the two-dimensional direction finding method provided by the invention, uniform linear arrays can be flexibly combined instead of depending on a small number of specific arrays, so that the data advantages of a fully-filled rectangular area array can be matched and fully exerted, and meanwhile, the two-dimensional direction finding method is suitable for a non-fully-filled rectangular area array.

The invention belongs to the technical field of bridge safety, and provides a dynamic monitoring method and device for global deflection and instability risk of a bridge structure. According to the method, p * q matrix type wireless composite tilt angle sensors are arranged on a target bridge structure, relative coordinates and tilt angle values of sensor planes are collected in real time at the frequency not lower than 50 Hz and transmitted to a monitoring device in a remote wireless mode, meanwhile, the normal displacement of a panel relative to the original point position is synchronously obtained through a GPS, multi-source data time synchronization processing is carried out, and the relative coordinates and tilt angle values of the sensor planes are obtained. And the data time consistency is ensured. A deflection curved surface fitting algorithm is utilized, an overdetermined equation is constructed, Moore-Penrose pseudo-inverse solution and displacement constraint correction are performed, an actual deformation curved surface of the bridge structure is fitted in combination with sensor data and normal displacement, then the maximum deflection and the maximum curvature are calculated, and real-time dynamic monitoring and danger early warning of overall deformation of the bridge structure are achieved according to dual control indexes. According to the invention, global high-precision dynamic monitoring and instability risk active prevention and control of bridge deflection deformation are realized.

The application provides a geometric solution method of key parameters of a forward-looking terrain of an exoskeleton, and through unified space-time coordinate, double-sensor plane fitting, swing-phase dynamic scanning solution, multi-step fusion verification, low-cost, high-precision and high-robustness terrain parameter solution is realized, and the exoskeleton embedded real-time control requirement is perfectly adapted.

According to an example embodiment, an optical sensor apparatus (110) for determining at least one characteristic of a surface of an object (180) positioned within a measurement range is provided, the sensor apparatus (100) comprising: an illumination assembly (120) comprising one or more light sources (121, 121-k) arranged to emit light towards the measurement range through a light-collecting optical assembly, wherein the emitted light covers a predefined range of wavelengths and wherein the one or more light sources are arranged to form respective one or more light emitting area patterns of predefined lateral shape; a first optical assembly (140) arranged to longitudinally disperse the light emitted from the illumination assembly (120) such that light across the predefined range of wavelengths in each of the one or more light emitting area patterns is focused at a respective range of focus distances that constitutes a corresponding sub-range of candidate distances within the measurement range; a beam splitter (130) arranged to transmit the light emitted from the illumination assembly (120) towards the first optical assembly (140) and to fold the light reflected from the surface of the object (180) received through the first optical assembly (140); a second optical assembly (150) arranged to receive the folded light across the predefined range of wavelengths, to laterally disperse the received light across the predefined range of wavelengths and to focus the light across the predefined range of wavelengths at a predefined distance; a light sensor assembly (160) having a sensor plane arranged at the predefined distance to receive the laterally dispersed light across the predefined range of wavelengths such that the light originating from the one or more light emitting area patterns is received at respective one or more corresponding sub-ranges of positions along an axis (y′) on the sensor plane; and a detector assembly (170) arranged to determine the at least one characteristic of said surface of said object (180) based on the laterally dispersed light received across said one or more sub-ranges of positions along said axis (y′) on the sensor plane.

According to one example embodiment, there is provided an optical sensor device (110) for determining at least one characteristic of a surface of an object (180) positioned within a measurement range, the sensor device (100) comprising: an illumination assembly (120), the illumination assembly comprises one or more light sources (121, 121-k) arranged to emit light through the light collection optical assembly towards the measurement range, where the emitted light covers a predefined wavelength range, and where the one or more light sources are arranged to form a respective one or more light emitting area pattern of a predefined lateral shape; a first optical assembly (140) arranged to longitudinally disperse the light emitted from the illumination assembly (120) such that light across the predefined wavelength range in each of the one or more light emitting area patterns is focused at a respective focal length range, the focal length range forms a corresponding candidate distance sub-range in the measurement range; a beam splitter (130) arranged to transmit the light emitted from the illumination assembly (120) towards the first optical assembly (140) and to fold light received through the first optical assembly (140) reflected from the surface of the object (180); a second optical assembly (150) arranged to receive the folded light across the predefined wavelength range to laterally disperse the received light across the predefined wavelength range and focus the light at a predefined distance across the predefined wavelength range; a light sensor assembly (160) having a sensor plane arranged at the predefined distance to receive laterally dispersed light across the predefined wavelength range, such that the light originating from the one or more light-emitting area patterns is received at respective one or more corresponding position sub-ranges along an axis (y ') on the sensor plane; and a detector assembly (170) arranged to determine the at least one characteristic of the surface of the object (180) based on the laterally dispersed light received across the one or more position subranges along the axis (y ') on the sensor plane.

The invention relates to a telecentric lens (100; 100a; 100b; 100c) comprising a lens body (20) extending along an optical axis (X). The lens body (20) is provided with a front optical group (2), a rear optical group (5), a stop (4), a sensor plane (6) and a liquid lens (3). The front optical group (2) is configured to receive incoming light rays (R i ) originating from an object (1). The rear optical group (5) is configured to receive light rays (R j ) from the front optical group (2). The stop (4) is arranged between the front optical group (2) and the rear optical group (5). The sensor plane (6) is configured to collect outgoing light rays (R z ) projected by the rear optical group (5). The stop (4) is substantially arranged at a focal point of the front optical group (2). Furthermore, the liquid lens (3) is arranged between the front optical group (2) and the rear optical group (5). The curvature of the liquid lens (3) can be adjusted to translate a focal plane of the object (1) along the optical axis (X).

Systems and methods of determining a hologram of an image for a system comprising a display device and viewing system are disclosed. Some embodiments implement a multi-stage procedure comprising (i) determining a first complex light field at an entrance pupil of the viewing system, (ii) determining a second complex light field at a sensor plane of a sensor of the viewing system, (iii) determining a third complex light field at the entrance pupil, and (iv) determining a fourth complex light field at the display plane. Some embodiments include extracting a hologram from a data set corresponding to the fourth complex light field.

The invention discloses a flexible pipe composite layer winding tension monitoring device which comprises a tension sensing unit matched with a fiber rope of a winding machine, the winding machine comprises a machine disc, a bobbin and a wire outlet disc, a wire coil is installed on the bobbin, and the wire outlet end of the fiber rope is wound on the rotation face of a flexible pipe; the tension sensing unit comprises a tension sensor and a sensor fixing structure, the sensor fixing structure comprises a sliding sleeve, a telescopic cantilever and a buckle, the sliding sleeve is arranged on the bobbin in a sleeving mode, the fixed end of the telescopic cantilever is fixedly connected with the sliding sleeve, and the buckle is arranged at the free end of the telescopic cantilever and fixed to a fixing screw of the tension sensor; the position of the tension sensor relative to the fiber rope is determined by adjusting the positions of the sliding sleeve and the buckle; a sensing signal is finally transmitted to an upper computer so as to read and display the measured tension of the fiber rope in real time. The external cantilever type fixing structure is adopted, plane sliding of the sensor can be effectively prevented, meanwhile, actual winding is not affected, and high applicability is achieved.

The invention relates to a microscope with a light source for emitting excitation light, an illumination beam path for directing the excitation light into a sample area, wherein the illumination beam path comprises a polarization manipulator for changing a polarization state of the excitation light, a phase plate for generating an illumination pattern, a cylindrical optic for generating an elongated distribution of the excitation light, a scanning unit for scanning the elongated distribution of the excitation light through the sample area, and an illumination objective for directing the excitation light into the sample area, a camera for capturing images of a sample, a detection beam path with a microscope objective for directing emission light onto the camera, and a control unit for controlling the scanning unit and / or the camera and for reading out measurement data from the camera.The microscope is characterized in that the camera is arranged in a non-scanned part of the detection beam path and that the control unit is configured to synchronize a location of a readout slit-shaped area in a sensor plane of the camera with a location of the elongated distribution of the excitation light in a plane of the sample. The invention also relates to a slide reader and a method for microscopy.

The present invention relates to an optical system (10) for acquiring images of a scene, comprising: - a first optical channel (12) for providing a first optical flow originating from the scene viewed from a first field of view, - a second optical channel (14) for providing a second optical flow originating from the scene viewed from a second field of view having a smaller dimension than the first field of view, - a polarising splitter (16) for recombining a portion of the first optical flow according to a first polarisation state with a portion of the second optical flow according to a second polarisation state in order to form a recombined optical flow, - a sensor (18) for capturing the recombined optical flow, and - an array of polarisers (20) positioned in the plane of the sensor (18).

A multi-channel infrared gas sensor including a beam splitter arrangement, which splits an infrared beam into four infrared partial beams, four bandpass filters and four infrared sensors, respectively one for each infrared partial beam at a first used signal wavelength. The directions of propagation of the four infrared partial beams differ from one another in pairwise fashion. A first and second infrared used signal sensor are arranged so that respective used signal sensor detection areas have a symmetric orientation with respect to a used signal sensor plane of symmetry situated between the detection areas. A first and second infrared reference signal sensor are arranged so that respective reference signal sensor detection areas have a symmetric orientation with respect to a reference signal sensor plane of symmetry situated between the reference signal sensor detection areas. No signal sensor detection area is orthogonal to its respective signal sensor plane of symmetry.

The technology relates to a flexible printed circuit board (PCB) that is incorporated into a steerable tip of an endoscope. The endoscope includes a working channel extending through the steerable tip; a foldable printed circuit board (PCB) extending at least partially around the working channel. The foldable PCB includes a planar sensor segment extending along a first plane, the sensor segment populated with at least one sensor; a planar camera segment extending along a second plane that is substantially orthogonal to the first plane and positioned distally from the sensor segment, the camera segment including an opening for the working channel and populated with a camera and at least one light source, wherein the planar camera segment is partially separated from the sensor segment by an aperture in the foldable PCB; and a bent arm extending between, and connecting, the sensor segment and the camera segment.

According to an example embodiment, an optical sensor apparatus (110) for determining at least one characteristic of a surface of an object (180) positioned within a measurement range is provided, the sensor apparatus (100) comprising: an illumination assembly (120) comprising one or more light sources (121, 121-k) arranged to emit light towards the measurement range through a light-collecting optical assembly, wherein the emitted light covers a predefined range of wavelengths and wherein the one or more light sources are arranged to form respective one or more light emitting area patterns of predefined lateral shape; a first optical assembly (140) arranged to longitudinally disperse the light emitted from the illumination assembly (120) such that light across the predefined range of wavelengths in each of the one or more light emitting area patterns is focused at a respective range of focus distances that constitutes a corresponding sub-range of candidate distances within the measurement range; a beam splitter (130) arranged to transmit the light emitted from the illumination assembly (120) towards the first optical assembly (140) and to fold the light reflected from the surface of the object (180) received through the first optical assembly (140); a second optical assembly (150) arranged to receive the folded light across the predefined range of wavelengths, to laterally disperse the received light across the predefined range of wavelengths and to focus the light across the predefined range of wavelengths at a predefined distance; a light sensor assembly (160) having a sensor plane arranged at the predefined distance to receive the laterally dispersed light across the predefined range of wavelengths such that the light originating from the one or more light emitting area patterns is received at respective one or more corresponding sub-ranges of positions along an axis (y′) on the sensor plane; and a detector assembly (170) arranged to determine the at least one characteristic of said surface of said object (180) based on the laterally dispersed light received across said one or more sub-ranges of positions along said axis (y′) on the sensor plane.

The present disclosure can effectively improve an angular image resolution and a spatial image resolution compared to the related art by solving a problem of a plenoptic image based on a microlens array according to the related art. In the case of the microlens array according to the related art, microlenses having different numerical apertures (NAs) and F # (F numbers) or focal lengths are positioned on one substrate. However, in the present disclosure, two or more microlens arrays having different NAs and F # are stacked in a layer form (all the microlenses of each microlens array are formed in the same F # and the same NA) to allow various F # and various NAs to be implemented, and thus an image of an object is formed on a sensor plane at different positions. Accordingly, a spatial resolution and a depth resolution increase.

A pipe and profile machining machine having a system for scanning a profile of a cross section of a pipe or profile to be machined is described, the machine comprising a machining head, a feed device arranged to move the pipe or profile to be machined each time forward along a feed axis towards the machining head, and a scanning system for scanning a profile of a cross section of the pipe or profile to be machined. The scanning system comprises at least one laser scanning module having a laser emitter arranged to emit a light blade with which at least one portion of the pipe or profile to be machined is illuminated, the laser scanning module having a camera arranged to acquire an image of the portion of the pipe or profile to be machined illuminated by said light blade. The camera comprises a lens system and a sensor configured in such a way that the optical axis of the camera is tilted at an angle with respect to the direction normal to the sensor plane of the sensor to the light blade generated by the laser emitter, bringing the focal plane to a position as coincident as possible with the plane of the light blade according to the Scheimpflug principle.

The application discloses a scene gray image recovery system and method based on a dynamic visual sensor, and belongs to the field of computer vision and computational imaging. The application gradually opens the light of an image acquisition system by an incident light intensity control component, acquires the brightness change events on the sensor plane in the process by the dynamic visual sensor, obtains a time mapping gray image based on the brightness change events and the change relationship of brightness with the acquisition time, obtains an event number mapping gray image according to the mapping relationship of the brightness change events, the gray scale and the event number, and obtains the scene gray image according to the time mapping gray image and the event number mapping gray image. The application enables the dynamic visual sensor which can only output the brightness change discrete information to also output the gray image. Compared with the prior art, the application is compatible with static scenes and has better recovery effect.

The utility model relates to the technical field of intelligent automation, in particular to an oxygenation sheet release system based on automatic adjustment of dissolved oxygen in water, which comprises a plurality of sensors, a plane and a water surface, the plurality of sensors are respectively arranged on the periphery and the center of the inside of the water surface, and two box bodies are arranged on two sides of the water surface and on the top of the plane. The driving assembly is arranged to drive the two stirring rods to rotate in opposite directions, the two groups of stirring rods and stirring paddles in opposite directions can enable water on the water surface to form stronger convection, water flow generated from one side and water flow on the other side can mutually impact and intersect, and the water flow on the other side impacts and intersects with the water flow on the other side. The convection effect can bring the water body on the water surface to the surface and bring the oxygen-rich water body on the surface to the bottom, so that sufficient exchange of the water bodies on the upper layer and the lower layer is promoted. And oxygen generated by dissolving of the oxygenation sheets can be diffused in the vertical direction more quickly, so that dissolved oxygen in the depth of the whole water surface is more uniform.

The invention provides a flexible resistance network sensing skin for curved surface deformation sensing, and relates to the technical field of flexible sensors. Comprising a flexible substrate, a two-dimensional conductive network arranged in the flexible substrate and electrode pins installed on the periphery of the flexible substrate at intervals, the electrode pins are connected with the two-dimensional conductive network, and any two electrode pins are connected with the two-dimensional conductive network to form a resistor. According to the two-dimensional flexible conductive network sensing skin, an integrated net-shaped conductive structure design is adopted, deformation detection in multiple directions in a sensor plane is achieved, stretching compression bending in different directions and combined deformation of stretching compression bending in different directions are included, and the two-dimensional flexible conductive network sensing skin can be better attached to a complex curved surface; by adopting a flexible conductive material, the long-term use stability of the sensor is improved. Flexible fitting, environment stability, low power consumption and low cost are considered, the method can be widely applied to the fields of human body monitoring, intelligent wearing, flexible electronics and the like, and the technical practicability and the industrialization prospect are outstanding.

The invention discloses a hydrogen sensor, a planar chiral structure and a preparation method of the planar chiral structure. The planar chiral structure comprises a substrate layer; the Cr layer is arranged on the substrate layer; the surface plasmon material layer covers the Cr layer; the Pd layer covers the surface plasmon material layer; the planar chiral structure is in a windmill shape; and the ratio of the distance L between the two opposite angles to the distance W between the two inner angles is (2-4): 1. According to the planar chiral structure provided by the invention, the signal intensity of a single planar chiral structure is amplified to be capable of being directly detected and applied; and a plurality of planar chiral structures can form an array to realize integrated application. The preparation method is simple and easy to implement, can be directly prepared on a substrate layer, and realizes large-scale production. The hydrogen sensor detection unit is small to a submicron level, and can be used for high-efficiency detection of hydrogen concentration, leakage and content in the fields of energy, industry, traffic, security and protection, medical treatment and the like.

Embodiments of the present disclosure generally relate to a twist-insensitive mounting differential sensor with direction detection. A magnetic sensor includes a plurality of pairs of sensor elements and a sensor circuit, each pair of sensor elements including two sensor elements disposed opposite one another on a circumference of a circle arranged in a sensor plane of the magnetic sensor, the sensor circuit configured to generate a first pulse output signal based on a selected differential measurement signal indicative of a rotational speed of an object. The sensor circuit is configured to generate a plurality of differential measurement signals, one for each of the plurality of pairs of sensor elements, wherein each of the plurality of differential measurement signals is derived from sensor signals generated by the corresponding pair of sensor elements. The sensor circuit is further configured to select, as the selected differential measurement signal, the differential measurement signal having a largest amplitude from the plurality of differential measurement signals.

The invention relates to an electro-optical radiation protection device (1), in particular a light protection device, comprising: at least one electro-optical protection sheet (1) covering at least a monocular field of view and comprising at least one liquid crystal element (2); at least two radiation sensors (3, 4, 5), each of which generates a control signal depending on the intensity of the incident radiation; and an electronic control means (6) which is designed to receive a control signal and to control the or each liquid crystal cell (2) and to control the transmittance (T) of the protective sheet (1) as a function of the control signal of the radiation sensor. The radiation sensors (3, 4, 5) are used as photodiodes with the highest sensitivity in the infrared range, the sensor surfaces (7, 8, 9) define sensor planes (SE3, SE4, SE5), at least two sensor planes (SE3, SE4) intersect at an angle of less than 45 degrees, and the intersecting line of these sensor planes (SE3, SE4) preferably lies or is parallel to the sagittal plane (S) of the protective sheet (1).

A machine for machining tubes and profiles (T) is described, comprising: a machining head (12), a feed device (14) arranged to advance, each time, a tube or profile (T) to be machined along a feed axis (x) towards the machining head (12), and a scanning system for scanning the profile of the cross-section of the tube or profile (T) being machined. The machining head (12) can be transposed relative to the tube or profile (T) being machined in a vertical transverse plane, perpendicular to the feed axis (x). The scanning system comprises at least one laser scanning module (20) having a laser transmitter (22) adapted to emit a narrow beam of light (L) for illuminating at least a portion of the tube or profile (T) being machined and a camera (24) adapted to acquire an image of the portion of the tube or profile (T), the portion being illuminated by said narrow beam of light (L).The camera (24) comprises a lens (42) and a sensor (44) configured such that the optical axis (o2) of the camera (24) is inclined by a certain angle (φ) with respect to a direction (s) perpendicular to the sensor plane (PC) of the sensor (44), towards the narrow beam of light (L) generated by the laser transmitter (22) so as to move the focusing plane (PM) to a position which coincides as much as possible with the plane (PW) of the narrow beams of light (L), according to Scheimpflug's law. Figure for abstract: Fig. 6.

A microscope having a light source for transmitting excitation light, an illumination beam path for guiding the excitation light into a sample region and for modifying a polarization state of the excitation light, a phase plate for creating an illumination pattern, a cylindrical optics unit for creating an elongate distribution of the excitation light, a scanning unit for scanning the elongate distribution of the excitation light through the sample region, a camera for recording images, a detection beam path with a microscope objective for guiding emission light onto the camera and a control unit for controlling the scanning unit and / or the camera and for reading out measurement data from the camera. The camera is arranged in a non-descanned part of the detection beam path and the control unit is configured to synchronize a location of a slot-shaped readout region in a sensor plane of the camera with a location of the elongate distribution of the excitation light in a plane of the sample.

An apparatus for detecting an abnormality in a structure includes a base, configured to be attached to the structure, and piezoelectric transducers, configured to generate waves through the structure, coupled to the base, spaced apart from each other, and aligned with each other along a transducer plane. The apparatus additionally includes piezoelectric sensors configured to sense the waves generated by the piezoelectric transducers, coupled to the base, spaced apart from each other, and aligned with each other along a lateral sensor plane. A distance between adjacent ones of the piezoelectric sensors is the same. A size of each one of the piezoelectric transducers is greater than a size of each one of the piezoelectric sensors. A distance between the transducer plane and the lateral sensor plane is greater than a distance between adjacent ones of the piezoelectric transducers and greater than a distance between adjacent ones of the piezoelectric sensors.

A tube and profile machining machine (T) is described, comprising: a machining head (12), a feeding device (14) arranged to advance a tube or profile (T) to be machined along a feeding axis (x) towards the machining head (12) each time, and a scanning system for scanning the cross-sectional profile of the tube or profile (T) being machined. The machining head (12) can be transposed relative to the tube or profile (T) being machined in a vertical transverse plane perpendicular to the feeding axis (x). The scanning system includes at least one laser scanning module (20) having a laser emitter (22) adapted to emit a narrow beam of light (L) to illuminate at least a part of the tube or profile (T) being machined and a camera (24) adapted to acquire an image of the part of the tube or profile (T), the part being illuminated by said narrow beam of light (L).The camera (24) comprises a lens (42) and a sensor (44) configured such that the optical axis (o2) of the camera (24) is inclined at a certain angle (φ) with respect to a direction (s) perpendicular to the sensor plane (PC) of the sensor (44), towards the narrow beam of light (L) generated by the laser emitter (22) so as to move the focusing plane (PM) to a position that coincides as closely as possible with the plane (PW) of the narrow beams of light (L), according to Scheimpflug's law. Figure for the abstract: Fig. 6.

The invention relates to a Sammer camera (10) comprising:-a camera coupling (16) for holding a camera (12),-the camera (12) held in the camera coupling (16) comprising a sensor (123) located in a sensor plane and camera electronics (126) connected to the sensor (123), the central normal of the sensor (123) specifying a first optical axis, and the central normal of the sensor (123) specifying a second optical axis, a lens coupling (18) for fixedly holding a lens predefining a second optical axis, which lens coupling can be pivoted relative to the camera coupling (16) about a pivot axis intersecting the optical axes in the sensor plane, such that the first and second optical axes extend coaxially to one another according to the pivot position or intersect one another in the sensor plane, a mounting base (20) for mounting the lens on the mounting base (20), the lens coupling (18) is mounted in the mounting base so as to be rotatable about a second optical axis. The invention is characterized in that the camera (12) has a cylindrical sensor carrier (121), on the front end wall (122) thereof, the sensor (123) is fixed in a central position and in an orientation perpendicular to the cylinder axis of the sensor carrier (121); the rear end wall (124) bears an interface to camera electronics (126) arranged inside the sensor carrier (121), the camera coupling (16) having a central circular through-hole in which the sensor carrier (121) is mounted in an axially fixed manner and in such a manner that the sensor carrier can be rotated about the cylinder axis of the sensor carrier (121) directly, and-the rear end wall (124) of the camera coupling (16) bears an interface to the camera electronics (126) arranged inside the sensor carrier (121).