387 results about "Light scanning" patented technology

The invention discloses a carbon fiber composite material surface modification spraying system and a control method thereof. The system comprises a multi-axis robot, a plasma spray gun, a contact angle measuring probe, a 3D line laser scanner, a hyperspectral imager, an environment sensor and a controller. According to the method, the plasma power and the robot speed are adjusted in real time through contact angle measurement and plasma treatment feedback control, so that the CFRP surface can accurately reach a target value, and the coating adhesive force is improved; 3D line laser scanning and hyperspectral imaging are combined, and the posture, the distance, the wet film thickness and the component uniformity of the spray gun are monitored in real time; based on a prediction model fusing a physical model and a neural network, a self-adaptive fuzzy PID control algorithm is adopted, and the coating flow and the track posture of a spray gun are accurately regulated and controlled in real time. The problems of weak coating binding force, uneven thickness, orange peel, sagging and serious coating waste in traditional spraying are effectively solved, and self-adaptive, high-quality and green spraying of workpieces with complex curved surfaces is achieved.

The invention discloses a frozen soil roadbed hot melt settlement laser scanning measurement method and system, and relates to the technical field of measurement, the method comprises the following steps: obtaining gridding surface data, and obtaining an elevation data sequence of each grid point; acquiring an elevation change index of each grid point according to the elevation data sequence of each grid point; acquiring a plurality of grid points adjacent to the ith grid point and taking the plurality of grid points as a plurality of reference grid points of the ith grid point, acquiring each relative difference quantity of the ith grid point, and acquiring a correction proportion of the ith grid point according to the plurality of relative difference quantities of the ith grid point; and obtaining target elevation data of each grid point according to the correction proportion of each grid point and the measured elevation data at the current moment, and forming a measurement result including the gridding surface data according to the target elevation data of each grid point. The method has the advantages of identifying abnormal values, dynamically correcting measurement and improving data reliability.

The invention relates to the technical field of three-dimensional analysis, in particular to an oral cavity three-dimensional motion analysis system based on dynamic occlusion scanning. The system comprises an oral cavity occlusion feature extraction module, a dynamic occlusion reconstruction module, an occlusion track smoothing module and an oral cavity motion abnormity identification module, and a multi-view structured light scanner can be used for carrying out image scanning on the oral cavity in the dynamic occlusion process so as to obtain a multi-frame original occlusion image sequence; occlusal feature extraction and three-dimensional occlusal reconstruction are carried out on the multiple frames of original occlusal image sequences to construct corresponding three-dimensional occlusal model sequences; a dynamic occlusion trajectory prediction model is constructed based on the three-dimensional occlusion model sequence, oral cavity three-dimensional motion analysis and occlusion trajectory smoothing filtering processing are carried out, and a smooth three-dimensional occlusion motion trajectory is generated; and performing oral cavity motion abnormity identification according to the smooth three-dimensional occlusion motion track so as to generate an oral cavity occlusion three-dimensional motion abnormity identification result. According to the invention, accurate capture and analysis of three-dimensional motion of the oral cavity can be realized.

The invention discloses a laser scanning system, and belongs to the technical field of laser signal processing. The system comprises a laser emission and control module, a scanning device, a receiving device, a signal processing module and a self-adaptive learning module. And the signal processing module extracts the instantaneous frequency of the beat signal through Fourier transform and Hilbert transform, and dynamically adjusts the input voltage based on an iterative algorithm optimized by the adaptive learning module to realize linearization correction of the beat signal frequency and a nonlinear mapping linearization interpolation scheme. The adaptive learning module stores historical correction data, dynamically optimizes parameters such as step length and convergence conditions of an iterative algorithm by using a machine learning method, and improves the adaptability and correction precision of the system in a complex environment. According to the method, full-closed-loop intelligent control from signal acquisition and processing to parameter optimization is realized, and the method has the characteristics of high precision, strong robustness and low manual intervention, and is suitable for the fields of laser radar, three-dimensional scanning, precise distance measurement and the like.

The invention provides a roadbed slope collapse early warning method and system based on linear structured light scanning, and is suitable for the technical field of slope safety monitoring. The method comprises the steps of unmanned aerial vehicle-scanning equipment cooperative deployment, fixed path automatic scanning, original point cloud data space registration, data feature matching and early warning response. The unmanned aerial vehicle carries line structure light scanning equipment, fixed path automatic scanning and real-time single-frame image three-dimensional reconstruction are combined, space-time continuous point cloud data of the roadbed slope are obtained, efficient dynamic monitoring of large-range slope surface deformation is achieved, and the problems that traditional manual inspection is low in efficiency and insufficient in coverage are solved; through the space-time synchronization registration and abnormal point intelligent identification technology, real slump displacement and environment interference are effectively distinguished by utilizing displacement direction analysis and threshold screening, the false alarm rate is greatly reduced, and the anti-interference capability in a complex scene is enhanced; the slope sudden change characteristics of slope crest displacement are matched through regularized piecewise linear modeling, so that the early warning response time is advanced.

The invention discloses an industrial visual inspection method based on edge light scanning, which comprises the following steps of: initializing projector parameter setting, adjusting shooting frequency and exposure time of an industrial camera, acquiring defect images and forming an image sequence according to the size and the material of a detected piece and an expected defect type to be detected and based on an edge light scanning method; carrying out fusion operation on the image sequence, enhancing defect signals of the images through a weighted stacking algorithm by utilizing high-contrast characteristics of defect areas in multiple frames of images, and carrying out defect positioning and classification on the enhanced images by adopting an image segmentation technology, so as to realize visual detection on defects of the detected piece; by optimizing the design of an optical imaging system, edge light scanning of the quartz wafer is realized, defects are highlighted, surface defects can be quickly and accurately identified, the detection efficiency is greatly improved, defect characteristics are directly enhanced in an image acquisition stage, and quick and accurate defect detection is realized in combination with a sequence image analysis technology.

A three-dimensional displacement measuring system for a railway platform comprises a laser, an angle sensor, a high-magnification camera and an LED (light-emitting diode) illuminating lamp which are respectively arranged on a fixed upright post, the target is adhered to the edge of the platform to form a measurement reference surface, and the horizontal distance between the stand column and the target is a preset value; the system establishes a virtual zero point and defines a space rectangular coordinate system XYZ, the X axis is in the longitudinal direction of the platform, the Y axis is perpendicular to the edge of the platform, and the Z axis is vertically upward. The invention provides a non-contact, high-precision and low-power-consumption railway platform three-dimensional displacement measurement method, which comprises the following steps of: performing periodic laser scanning and image acquisition on a target adhered to the edge of a platform by utilizing a vision measurement system formed by double lasers and a high-magnification camera and combining feedback information of an angle sensor; and the relative displacement of the X axis, the Y axis and the Z axis in the space is inversely calculated through a geometric model. The method can automatically complete the whole-process operation of zero calibration, photographing, identification, calculation, storage and the like, and meets the actual requirements of long-term structure monitoring of the railway platform.

A panoramic scanning coal fire detection and disaster early-warning, prevention and control apparatus for a mining area, the apparatus comprising a detection apparatus, a laser scanning apparatus, a satellite remote-sensing monitoring apparatus, a data processing and analysis system, and an early-warning, prevention and control apparatus. High-precision thermistor temperature sensors (1) are arranged inside, on the surface and in surrounding areas of coal piles, such that subtle changes in the temperature of the coal piles can be accurately captured, and early-stage potential coal fire hazards can be effectively detected; gas sensors (2) installed at vents of a mining area can simultaneously measure the concentrations of gases such as carbon monoxide, carbon dioxide, methane and sulfur dioxide, so as to promptly identify anomalies in gas composition that are caused by coal fire combustion; an infrared thermal imager (3), which is located at a high position to acquire a panoramic view of the mining area, can clearly display high-temperature regions; and cameras (4) provide high-definition, wide-angle and low-illumination visual monitoring, and various sensors comprehensively collect data from different dimensions, thereby greatly improving the accuracy and comprehensiveness of monitoring.

An image forming apparatus includes a light emitter; a photoconductor to form a latent image on a surface of the photoconductor; a deflector to deflect light at a write start timing; an optical sensor; and circuitry. The optical sensor detects the scanning light scanning, with one of multiple sensitivities. The circuitry adjusts a light intensity of the emitted light and the write start timing based on the detection signal; switches from the one of multiple sensitivities to other of multiple sensitivities or from the other of multiple sensitivities to the one of multiple sensitivities based on the light intensity adjusted; and determines whether to perform a color misregistration correction based on a shift in the write start timing caused by a switch from the one of multiple sensitivities to the other of multiple sensitivities or from the other of multiple sensitivities to the one of multiple sensitivities.

The invention relates to the technical field of machine vision detection, in particular to a flaw detection method and system for large mold production based on machine vision. The method comprises the following steps: positioning the surface and a key curvature area of a spherical acoustic focusing lens mold, and establishing a three-dimensional coordinate reference frame of the spherical acoustic focusing lens mold; the method comprises the following steps: acquiring an image of a spherical area of a whole spherical acoustic focusing lens mold, preprocessing the image, and acquiring point cloud data of the surface of the spherical acoustic focusing lens mold; and based on the preprocessed image, utilizing a convolutional neural network model to identify the surface defect of the spherical acoustic focusing lens mold, and combining point cloud data to detect an area with geometric anomaly. According to the method, a unified three-dimensional coordinate reference frame is established, and high-resolution image data and point cloud data generated by high-precision structured light / laser scanning are precisely registered in space.

The invention discloses a silver nanowire network film and a welding method, and relates to the technical field of nano material processing and flexible electronic device manufacturing, and the welding method comprises the following steps: taking a polyester film as a substrate, taking silver nanowires, and placing the silver nanowires in ethanol to prepare a silver nanowire dispersion liquid; spin-coating the silver nanowire dispersion liquid on a substrate, and drying to form a silver nanowire network electrode; a focused light scanning system is adopted to weld the silver nanowire film, a xenon lamp light source is adopted to form a light spot through focusing of a convex lens, an XY motor drives a platform to drive a silver nanowire network electrode to perform two-dimensional motion, and the light spot scans a to-be-welded area of the silver nanowire network electrode according to a preset path for welding; and naturally cooling to obtain the silver nanowire network film. Uniformity and stability of current conduction of the electrode network are guaranteed, and comprehensive and efficient node welding is achieved.

The invention relates to the technical field of shape deviation detection, in particular to a pressure vessel shape deviation detection device and method based on laser scanning, the pressure vessel shape deviation detection device comprises a handheld laser 3D scanner and further comprises a frame body, the side, close to a vessel tank, of the frame body is detachably connected with the scanner, and equidistant assemblies are symmetrically installed on the frame body; the ends of the two equidistant assemblies are in contact with the surface of the container tank, the two equidistant assemblies and the scanner form a triangle, and laser emitted by the scanner is perpendicular to the midpoints of the two equidistant assemblies; the ends of the two rotating pieces are attached to the peripheral face of the container tank, it is guaranteed that the distance between the scanner and the container tank is not changed, meanwhile, it can be guaranteed that the central axis of the container tank, the generatrix of the container tank and the path of laser emitted by the scanner are located on the same plane, and therefore the problem that in the prior art, due to distance measurement and scanning angle changes, the scanning precision is poor is solved. And the cylindrical container tank part is not scanned, so that repeated scanning is needed.

The present disclosure provides a laser scanning device and a projection imaging device, which realizes real-time compensation of the outgoing direction of the scanning beam by adding a hardware level distortion correction component and its control module after the reflection of the galvanometer. In the nonlinear distortion area such as the pillow-shaped distortion and the tilt distortion generated by the galvanometer scanning, the distortion correction component can accurately adjust the beam deflection angle according to the pre-calibrated correction parameter sequence, effectively restore the geometric shape of the scanning pattern, significantly improve the linearity of the point cloud distribution and the overall imaging accuracy, and complete the distortion correction of the full field of view without sacrificing the field of view angle or the resolution, thereby ensuring a wider effective imaging area and more delicate image details. By integrating a special distortion correction component in the optical path, the dependence on the upper image processing algorithm is reduced, the demand for high-performance controllers and complex software operations of the entire system is reduced, and better cost effectiveness and engineering implementation are achieved.

The invention discloses a method for measuring the thickness based on laser profile scanning of a 3D wheel of a conveying belt, particularly relates to the field of laser scanning thickness measurement, and is used for solving the problems that shutdown is needed and the measurement range is limited in existing conveying belt thickness detection. According to the method, three-dimensional point cloud data of the upper surface and three-dimensional point cloud data of the lower surface are collected at the same time, initial segmentation of the upper surface and the lower surface is completed through double criteria based on curvature and normal, a dynamic stability threshold value is constructed in combination with the running speed and transverse swing of the conveying belt, and a stable surface point set is formed through screening; then, a thin-plate spline algorithm of dynamic tensor weight is adopted to respectively fit continuous upper surface and lower surface reference curved surface models; and finally, the sampling points on the upper surface are projected to the lower surface along the normal direction and the Euclidean distance is calculated, so that the real thickness distribution of the conveying belt in the full width and full length range is obtained. Non-stop, non-contact and high-coverage online thickness measurement is realized, and the operation safety and maintenance management efficiency of the conveyor belt are improved.

The embodiment of the invention provides a laser scanning method and device, laser communication equipment and a laser communication system. The laser scanning method comprises the steps that a pointing center point where a target object is located is determined according to ephemeris information of the target object; the rotation angles of a plurality of array elements in the transceiving array are controlled, so that light beams emitted by the array elements are subjected to incoherent superposition to form scanning light spots, and the light beams emitted by the array elements are obtained through deflection of incident light of the transceiving array; scanning in a preset range pointing to the center point by adopting the scanning light spot, and controlling the rotation angles of a plurality of array elements in the transceiving array to enable light beams emitted by the plurality of array elements to be coherently superposed to form a scanning light beam under the condition that the first position of the target object is scanned; and scanning the first position with the scanning beam to capture the target object. The non-coherently stacked scanning light spots are firstly used for coarse positioning, and then the coherently stacked scanning light beams are used for fine positioning, so that efficient, rapid and accurate capturing of the rapidly moving target is realized.

The invention discloses a composite material ultrasonic nondestructive testing array device and a testing method.The composite material ultrasonic nondestructive testing array device comprises a scanning matrix structure, a mechanical arm and a control unit, and the scanning matrix structure comprises a flaw detection frame, a plurality of transverse driving mechanisms, a plurality of longitudinal driving mechanisms, a laser scanner and a plurality of ultrasonic probes; the laser scanner and the plurality of ultrasonic probes are mounted on the flaw detection frame, and the laser scanner is used for acquiring a three-dimensional model of the to-be-detected composite material component. The mechanical arm is used for flexibly positioning the carried scanning matrix structure, so that the scanning matrix structure can quickly reach different detection areas of the large composite material component; a laser scanner and a plurality of ultrasonic probes are integrated in the scanning matrix structure, firstly, the laser scanner obtains the local three-dimensional shape of a component, the control unit plans a scanning path in real time according to the model and divides detection sub-areas, and then the multiple ultrasonic probes are driven to independently move in the frame at the same time; and performing synchronous parallel scanning on the respective distribution areas.

The invention belongs to the related technical field of fluid temperature field measurement, and discloses a Scanning LIF technology-based three-dimensional temperature field measurement system and method, which comprises a sheet light scanning module and a double-color image synchronous acquisition module, and is characterized in that a parallel sheet light source is generated through double-camera double-color synchronous imaging and galvanometer scanning; according to the system, space calibration images, temperature calibration images and experiment images at different positions can be obtained through testing, the experiment images collected by the two cameras are subjected to ratio processing after space calibration, and a fluorescence intensity ratio-temperature relation curve is generated through temperature calibration at different positions. And a temperature field image corresponding to each position can be calculated. The system can generate parallel sheet light sources, and can change the number of scanning sheet light, the deflection angle of the galvanometer, the motion mode of the galvanometer, the residence time and the moving time of the galvanometer in a period, the exposure time of a camera and the like according to measurement requirements so as to meet actual use requirements.

A light scanning apparatus according to the present disclosure includes a deflecting unit configured to deflect a light flux from a light source to scan a surface in a main scanning direction, and a first optical system configured to guide the light flux deflected by the deflecting unit to the surface to be scanned, in which a width of the light flux immediately before being incident on a first deflecting surface of the deflecting unit is smaller than a width of the first deflecting surface in a main scanning cross section, and only a part of the light flux incident on the deflecting unit is deflected toward the surface to be scanned by the first deflecting surface when the first deflecting surface is at a first angle in the main scanning cross section.

The application provides a method for rapidly improving the surface structure and roughness of a cast aluminum alloy part, and relates to the technical field of laser beam processing, and comprises the following steps: fixing the cast aluminum alloy part on a multi-axis movable object platform; using a continuous laser beam to scan the initial surface layer of the cast aluminum alloy part, and controlling the laser power and scanning speed to make adjacent molten pools continuously overlap to form a uniform molten layer; when the thickness of the uniform molten layer reaches a first preset thickness required for surface structure reconstruction, stopping the laser scanning; the uniform molten layer is self-cooled and solidified in a room temperature environment to form a solidified surface layer; wherein the solidified surface layer forms a submicron equiaxed crystal structure, and the roughness of the solidified surface layer is smaller than that of the initial surface layer. The method directly generates a submicron equiaxed crystal structure under the condition of room temperature self-solidification by accurately controlling the molten pool overlap and the cooling rate, and achieves the purpose of rapidly modifying the surface layer of the cast aluminum alloy part.

To improve the accuracy of the stopping position when an autonomous mobile robot stops at a target location. [Solution] The autonomous mobile robot autonomously moves along a first target path to a first stop position just before the target stop position, while measuring and comparing the surrounding conditions using laser scanning (S1, S2). While stopped at the first stop position, it recognizes the position of a marker placed near the target stop position (S3), generates a second target path approaching the marker (S4), performs odometry movement to the second stop position following the generated second target path (S5, S6), recognizes the marker while stopped at the second stop position (S7), estimates the error with the target trajectory to the target stop position, performs odometry movement to correct the error (S8, S9), and stops at the target stop position (S10).

An apparatus including: a deflector deflecting a light flux from a light source to scan a surface in a main scanning direction; and an imaging optical system including first and second optical elements, and guiding the light flux deflected by the deflector to the surface. When sagittal shapes of an incident surface and an exit surface of each of the first and second optical elements are represented by the following equations:x=z2 / r′1+(1-(z / r′)2)1 / 2+∑n=18∑m=01⁢6Mm⁢n⁢ym⁢znr′=r⁡(1+∑i=11⁢6Ei⁢yi)in at least one of incident surface or exit surface of first optical element and each of incident surface and exit surface of second optical element, at least one of values of Mmn is not equal to 0 provided that m is not equal to 0, and incident surface and exit surface of second optical element have M01 of the same sign.

Provided is a light scanning apparatus wherein each of optical surfaces of an imaging optical element includes an effective portion on which a light flux traveling toward an effective region of a scanned surface is incident, and two non-effective portions provided on both sides in main scanning direction of effective portion, wherein, when each of a change in a sagittal line tilt amount and a change in a sagittal line curvature in main scanning direction on at least one of optical surfaces is represented by a function, at least one of functions is continuous and is not infinitely differentiable at a predetermined position on each of two non-effective portions, and wherein, with respect to at least one of sagittal line tilt amount and sagittal line curvature, an absolute value at a first end of non-effective portion on a side opposite to effective portion is smaller than that at predetermined position.

The invention relates to the technical field of epoxy floor quality detection, in particular to an epoxy floor coating thickness laser scanning and big data analysis device which comprises the steps that laser resonance spectrum scanning data and stress wave scanning data of the surface of a to-be-detected epoxy floor are acquired; based on the laser resonance spectrum scanning data, calculating a first vibration mode frequency set of the coating surface, and based on the stress wave scanning data, calculating a second vibration mode frequency set of the coating and the matrix interface; based on the first vibration mode frequency set and the second vibration mode frequency set, current thickness distribution of the coating is determined by inquiring a preset thickness and frequency correlation spectrum database; and based on the current thickness distribution and historical construction data in the thickness and frequency correlation spectrum database, performing matching degree analysis, and determining the uniformity grade and the potential defect area of the coating. And matching is carried out through data stored in the thickness and frequency correlation spectrum database, and potential defects are accurately identified.

Embodiments of the present disclosure relate to an optical scanning system, a laser radar and a vehicle. The optical scanning system includes a polarization converter, a polarization beam splitter, a phase delay element, and a scanning element. The polarization converter is configured to receive a first light having a first polarization state and a second light having a second polarization state and emit a third light having the second polarization state. The polarization beam splitter is configured to reflect the third light. The phase delay element is configured to receive the third light and emit a fourth light. The scanning element is configured to receive the fourth light and emit a fifth light. The phase delay element is further configured to convert the fifth light into a scanning light having the first polarization state, and the polarization beam splitter is further configured to transmit the scanning light.

The present invention relates to the field of large-field-of-view scenes. Provided is a nonlinear optical large-field-of-view imaging system, comprising a light source system, a laser scanning system and a laser detection system, wherein the light source system is configured to emit laser; the laser scanning system comprises a focusing lens and a galvanometer, wherein the galvanometer is located between the focusing lens and a sample to be detected, the focusing lens is configured to focus the laser on said sample, and the galvanometer vibrates according to a preset scanning angle so as to realize scanning of a laser focus on said sample; and the laser detection system comprises a compound-eye collection structure and a detector, wherein the compound-eye collection structure comprises a plurality of individual lenses which are closely arranged, optical signals generated by said sample are incident on the compound-eye collection structure, and the detector is configured to detect the optical signals collected by the compound-eye collection structure. The present invention can expand a laser scanning imaging range, can ensure that a laser beam always propagates along the optical axis of the focusing lens, and can comprehensively collect signals excited across the entire scanning field of view, thereby improving the efficiency of large-field-of-view imaging and increasing the signal intensity.

The utility model relates to the topographic survey field, and discloses a multifunctional topographic survey laser scanning device, which comprises an unmanned aerial vehicle shell, a mounting plate and a detection mechanism, the detection mechanism comprises a fixing plate, a fixing column is fixedly arranged on one side of the lower end of the fixing plate, and a supporting rod is hinged to the lower end of the fixing column. A scanning head is fixedly arranged at the lower end of the supporting rod, a second motor is fixedly arranged at the upper end of the scanning head, a rack fixedly sleeves the output end of the second motor, a shading plate is hinged to the outer side of the scanning head, and a second gear fixedly sleeves the hinged position of the shading plate and the scanning head; a telescopic rod is hinged to the side, away from the fixing column, of the lower end of the fixing plate. According to the utility model, after the second motor is started, as the rack is meshed with the second gear, the position of the shading plate can be adjusted, so that the equipment can normally operate under various illumination and weather conditions, and can obtain reliable data in a complex environment.

The application discloses a display module, a device and a preparation method thereof. The display module comprises a liquid crystal display panel, a backlight module, a driving chip and a control module. The liquid crystal display panel comprises a plurality of array-arranged display partitions. The backlight module comprises backlight partitions corresponding to the plurality of display partitions. The driving chip comprises a display driving chip and a backlight driving chip. The display driving chip is connected with the liquid crystal display panel, and the backlight driving chip is connected with the backlight module. The display driving chip comprises a display scanning direction receiving end, and the backlight driving chip comprises a backlight scanning direction receiving end. The display scanning direction receiving end is connected with the backlight scanning direction receiving end. The control module outputs scanning direction changing information, which is simultaneously received by the display scanning direction receiving end and the backlight scanning direction receiving end. When the display partitions are switched, the corresponding backlight partitions are lightened. The display effect of the display panel is improved.

The embodiment of the invention provides a thin-wall metal material thinning method which comprises the steps that 1, the laser spot interval and the feeding frequency are calculated according to laser scanning parameters, and the laser scanning parameters comprise the feeding interval; 2, the thin-wall metal material component is obtained, and a to-be-machined face of the thin-wall metal material component is subjected to laser scanning according to the light spot interval to form a plurality of first-round micropores which are arranged at intervals; according to the light spot spacing, the feeding spacing and the feeding times, multiple rounds of circulating laser scanning are conducted on the to-be-machined face in sequence so that gaps between the first round of micropores can be filled, and a thin-wall metal material component with a loose modified layer is obtained; and 3, the loose modified layer is removed, so that thinning of the thin-wall metal material component is achieved. According to the embodiment, the adverse effect of heat accumulation on the workpiece in the laser machining process can be reduced while the thin-wall metal material component is thinned, the deformation resistance of the ultra-thin workpiece is improved, and the surface flatness of the workpiece is guaranteed.

The invention provides a light source device and a projector, which have a rectangle extending in one direction and generate illumination light with suppressed optical density. This light source device is provided with: a light source unit that emits light including a first light beam; a light amplification optical system that generates amplified light obtained by amplifying light along a first axis; an overlapping optical system that overlaps the amplified light emitted from the light amplifying optical system with a region to be illuminated; and a light scanning unit that scans the amplified light incident from the light amplification optical system in a direction along a second axis orthogonal to the first axis in the region to be illuminated, a cross-section of the first light beam based on a surface orthogonal to the optical axis of the light amplification optical system having a shape having a long side and a short side, the short side of the first light beam being along the first axis.

The embodiment of the invention relates to an optical scanner. The optical scanner comprises a polarizing beam splitter, a wave plate and an optical phased array chip. Wherein the polarizing beam splitter is used for dividing incident light source light into first laser with a first polarization state and non-working light with a second polarization state, reflecting the first laser and transmitting the non-working light, and the first polarization state is different from the second polarization state. The wave plate is located on the reflection light-emitting side of the polarizing beam splitter and used for receiving the first laser and emitting second laser with a third polarization state different from the first polarization state and the second polarization state. And the optical phased array chip is used for receiving the second laser and emitting reference light, and the optical phased array chip is also used for changing the emitting angle of the reference light. The embodiment of the invention further relates to a laser detection system with the optical scanner and an automatic driving vehicle applying the laser detection system.