859 results about "Light scanning" patented technology

The invention discloses an online monitoring method and system for the light transmittance of an optical lens, and relates to the technical field of precise optical detection. The objective of the invention is to solve the problem of large light transmittance calculation error caused by halo scattering noise interference, low optical path calibration precision of a complex curved lens, a measurement blind area of a large-aperture lens and environmental disturbance of a high-reflection / high-light-transmittance lens in the prior art. According to the scheme, a three-dimensional curved surface model is constructed based on Gray code structured light projection and ICP registration, a dynamic partition scanning instruction set is generated through an improved genetic algorithm, and multi-wavelength polarized light is driven to scan and collect multi-dimensional data; specular reflection and scattering noise are suppressed by combining an improved Stokes vector algorithm and an attention mechanism U-Net network, and the data precision of the complex curved surface is improved by adopting Bayesian optimization and Zernike polynomial weighted fusion; constructing a double-loop coupling optimization architecture to realize closed-loop adaptive optimization; according to the invention, the anti-interference capability, the complex lens adaptability and the full-aperture detection precision are obviously improved.

The invention discloses a material-based laser scanning system and method, and relates to the technical field of industrial automation, and the system comprises the following components: a laser scanning unit, an environment sensing sensor group, a dynamic compensation and calibration module, a feedback control unit and a visual monitoring interface. According to the invention, the environment change of a scanning site is monitored in real time through the integrated environment sensing sensor group, and the laser scanning data is processed in real time by using an advanced dynamic compensation and calibration algorithm, so that the measurement deviation caused by environmental factors such as vibration, temperature change and dust interference can be effectively reduced; the measurement precision of laser scanning in complex environments such as a coal yard is remarkably improved, meanwhile, the stability of long-term measurement is ensured by continuously optimizing and calibrating model parameters and automatically adjusting laser scanning parameters, and reliable data support is provided for material management.

The invention belongs to the technical field of three-dimensional imaging and measurement, and particularly discloses a laser scanning three-dimensional imaging method and device, a medium and equipment, and the method comprises the steps: obtaining laser scanning data of a target object, and the laser scanning data comprises depth data including reflection intensity, a scanning angle, a timestamp and flight time; preprocessing the laser scanning data, and fusing a time sequence and scanning path information to obtain multi-channel input features adaptive to a neural network; constructing a three-dimensional geometric reconstruction model, and training the model; inputting the multi-channel input features into a trained three-dimensional geometric reconstruction model to obtain a dual-channel output tensor containing a dense depth map of the target object and a corresponding uncertainty map; converting the dual-channel output tensor comprising the dense depth map of the target object and the corresponding uncertainty map into a three-dimensional point cloud under world coordinates; and post-processing the three-dimensional point cloud to obtain a three-dimensional image of the target object.

The invention provides a tunnel rock mass dynamic disaster monitoring system based on digital twinning, and relates to the technical field of tunnel rock mass dynamic disaster monitoring based on digital twinning. By integrating a multi-mode sensing network, the system comprises a self-adaptive infrared structured light scanner, a distributed micro-seismic sensing array and a fiber grating strain sensor; comprehensive and real-time monitoring of the rock mass state is realized; meanwhile, an intelligent analysis algorithm based on deep learning is introduced, abnormal conditions are automatically recognized, a rockburst risk comprehensive index is generated, in addition, a physical entity and a virtual model are combined through a dynamic digital twinborn modeling technology, and visual analysis of rock mass state changes is achieved; and finally, an edge-cloud cooperative communication technology is adopted to ensure low delay and reliability of data transmission and ensure that the monitoring system can quickly respond and timely take emergency measures.

The invention relates to the technical field of high-end equipment manufacturing, and provides circuit board vertical left and right exchange frame digital exposure LDI equipment and an exposure system. The exposure assembly is arranged on the supporting seat and is used for exposing a workpiece; the first frame part is vertically arranged on the supporting seat, and is used for mounting a workpiece and enabling the workpiece to be vertical; the second frame part is vertically arranged on the supporting seat, and is used for mounting a workpiece and enabling the workpiece to be vertical; the driving assembly is used for driving the first frame part and the second frame part to move in the exposure scanning direction; and / or driving the exposure assembly to move in the exposure scanning direction. The workpiece is placed in the through hole in the vertical frame part, so that the workpiece and the frame part are both vertical, the workpiece does not need to be horizontally placed, the problems that ink on the workpiece is sucked out due to vacuumizing, and the exposure effect is poor are solved, the first frame part and the second frame part can be alternately exposed, and the exposure efficiency is improved.

The invention discloses a plastic effect simulation display method and system based on a 3D simulation technology, and relates to the technical field of medical information, and the method comprises the steps: collecting the facial data of a patient, and constructing a multi-level facial structure initial model; constructing a hybrid deformation model; individual characteristic parameters of a patient are extracted, and an individual biomechanical parameter set is generated through the biomechanical parameter prediction network; applying the personalized biomechanical parameter set to the mixed deformation model; operation input parameters of plastic surgery are received, and the deformation result of each layer of structure is calculated and displayed in real time based on a GPU parallel computing framework; constructing a tissue healing and recovery kinetic model, and generating appearance prediction data at different postoperative time points in combination with the deformation result; and performing three-dimensional visualization processing on the appearance prediction data. According to the method, CT / MRI, 3D structured light scanning and expression dynamic video sequences are creatively integrated, the limitation of traditional single-mode data modeling is broken through, and the soft tissue boundary recognition precision is remarkably improved.

The invention provides a Gaussian modeling method combined with laser scanning point cloud data processing, and relates to the technical field of three-dimensional modeling, and the method comprises the steps: carrying out the registration of a plurality of point cloud data sets through employing a point cloud fusion algorithm, and obtaining a target point cloud data set; performing data precision, position deviation and noise influence analysis on the plurality of point cloud data sets, determining point cloud data precision, a position deviation coefficient and a noise influence coefficient, and comprehensively evaluating and determining point cloud acquisition precision; setting a data dimension reduction proportion according to the point cloud acquisition precision, and performing covariance matrix dimension reduction on the target point cloud data set; and selecting a predetermined kernel function, performing data fitting and Gaussian process regression modeling on the dimension reduction point cloud data set, and outputting a surface fitting model. According to the method, the technical problems that the requirements for storage and computing resources are too high and efficient three-dimensional modeling cannot be realized due to the fact that a large number of covariance matrixes need to be calculated in a traditional Gaussian modeling method can be solved; the dimensionality of data can be effectively reduced, and the efficiency of three-dimensional modeling is remarkably improved.

The invention provides a self-adaptive teaching-free welding robot intelligent gas saving monitoring system, which relates to the technical field of industrial robots, and comprises a three-dimensional sensing module used for identifying the workpiece material category through a multispectral sensor integrated with a welding gun of a welding robot, meanwhile, a stereoscopic vision camera and a line structure light scanning camera are used for obtaining three-dimensional point cloud data of the welding seam in real time; the parameter adjusting module is used for calling a heat conductivity coefficient database based on the three-dimensional point cloud data, and correcting the initial flow of the welding current, the arc voltage and the protective gas in real time; and the matching control module is used for calculating the arc length variable quantity based on the arc voltage, controlling the opening degree of the gas flow valve through a dynamic regulator, realizing dynamic matching of the gas flow and the changed arc length, and generating gas dynamic matching control parameters. Through cooperative operation of self-adaptive attitude compensation and real-time gas consumption monitoring, teaching-free accurate operation in the welding process is achieved, and intelligent control over gas consumption is improved.

The invention discloses a wide-range weak feature scene measurement system based on multi-sensor fusion and structured light scanning, and relates to the technical field of wide-range scene scanning, in the system, an extended Kalman filtering algorithm is adopted, fusion is carried out based on positioning data provided by an inertial measurement module and a positioning sensing module, and a wide-range weak feature scene is obtained. And the distance measurement information provided by the laser distance measurement module is combined to correct the fused positioning data, so that the precision and robustness of subsequent point cloud registration are ensured. Then, according to position information and attitude information of the binocular structured light scanning camera during scene scanning, calculating a relative rotation matrix and a relative displacement matrix of each frame of scanning point cloud data relative to the first frame of scanning point cloud data, and performing coarse registration; in the coarse registration process, all frames of point clouds can be converted into a unified coordinate system by directly utilizing global pose information, and the efficiency of coarse registration is greatly improved. And finally, extracting laser marking point clouds projected by the non-contact laser marking device in each frame of scanning point cloud data, and performing iterative precise registration on each frame of scanning point cloud data by using color features and geometric distribution rules of the extracted laser marking point clouds. In conclusion, high-precision, high-efficiency and high-robustness point cloud registration in a large-scale weak feature scene is realized, and the method can be used for realizing high-precision non-contact measurement.

The present invention relates to an adaptive manufacturing method for building components, particularly in prefabrication, modular construction, and panelized construction. The invention minimizes cumulative errors in building component production, enhances precision, and facilitates automated assembly using real-time digital updates. The method includes creating a digital information model of a building, containing data on the dimensions and positions of building components; manufacturing at least one building component based on initial model parameters; scanning the manufactured component using laser scanning, structured light scanning, or ultrasound-based scanning, selected based on the material properties, to generate a digital representation of its actual dimensions and shape; updating the digital model with the scanned data to dynamically adjust parameters for subsequent components; recalculating and adjusting the parameters of unmanufactured components based on detected deviations; transmitting adjusted parameters to an automated manufacturing system for real-time modifications in production. The system comprises a processor executing adaptive manufacturing instructions, a scanning module, a processing unit, and a recalculation module that updates component dimensions based on deviations, ensuring seamless integration of prefabricated elements.

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 relates to an intelligent earth-rock filling and digging balance optimization method and system for a water conservancy project. According to the method, firstly, a laser scanner, unmanned aerial vehicle aerial survey equipment and a GPS positioning device are used for carrying out data collection on a construction site, and detailed topographic data and earth-rock distribution information are obtained; subsequently, construction requirements related to the hydraulic engineering are determined, including construction progress, construction sequence, resource availability, environmental limitation, and cost control. And based on the collected data and set construction requirements, a genetic algorithm is used for optimization, and an optimal earth-rock filling and digging balance scheme is generated. The optimization scheme covers a construction route, an equipment scheduling plan and a resource allocation scheme. And finally, hydraulic engineering construction is guided according to the optimization scheme, and efficient balanced filling and excavation of the earthwork are achieved. The construction efficiency is effectively improved, the cost is reduced, reasonable utilization of resources is ensured, and the method is suitable for various complex hydraulic engineering projects.

The invention discloses a laser radar and a mobile device, the laser radar comprises a shell, a transmit-receive module, a galvanometer module, a light transmission element and a sealing shell, the transmit-receive module is accommodated in the shell and is used for generating probe light and receiving echo light, the galvanometer module comprises a galvanometer base and a galvanometer body, the galvanometer base is installed on the shell, the galvanometer body is installed on the galvanometer base, and the light transmission element is installed on the galvanometer base. The galvanometer body is used for reflecting detection light and echo light, the light-permeable light-passing element is located on the downstream of a light path of the galvanometer module in the propagation direction of the detection light, the sealing shell is connected with the galvanometer base and the light-passing element, the galvanometer base, the sealing shell and the light-passing element jointly define a sealing cavity, the galvanometer body is located in the sealing cavity, the sealing shell is provided with a light-permeable part, and the light-permeable part is located in the sealing cavity. The light transmitting part is used for allowing the detection light to pass through so that the detection light can be emitted to the galvanometer body, and the light transmitting part is located outside a view field formed by scanning of the detection light through the galvanometer body. According to the technical scheme, stray light in the laser radar can be effectively reduced.

The invention relates to the field of unmanned aerial vehicle surveying and mapping and building three-dimensional modeling, and discloses a high-rise building three-dimensional modeling surveying and mapping method based on unmanned aerial vehicle laser scanning, and the method comprises the following steps: deploying a laser radar, a millimeter wave radar, a polarized light camera and an intelligent blind area supplement unmanned aerial vehicle for cooperative scanning, and generating an optimal path through topological manifold learning; multi-source point cloud high-precision registration is achieved through geometric algebra and Lie group optimization, multi-sensor heterogeneous data are fused in combination with tensor decomposition, blind area dynamic adjustment paths are detected in real time, and finally a complete three-dimensional building model is generated. According to the method, the modeling precision and data integrity of a complex building structure (such as a glass curtain wall) can be remarkably improved, the problems of scanning blind areas and equipment single-point failure are effectively avoided, and an efficient and robust solution is provided for high-rise building three-dimensional modeling.

The invention discloses a correction method and system for laser emission direction adjustment, and relates to the technical field of image processing, and the method comprises the steps: capturing laser spot real-time image data through a CCD camera, extracting a spot region through a U-Net model, and setting a standardized reference region through calculating the side length of a square frame; selecting light spots by using a square frame to establish a relative coordinate system, carrying out gridding processing and positioning the centers of the light spots, and finally converting the light spots into actual coordinates of a world coordinate system; acquiring reflected and transmitted light spot coordinates and light spot position data from the position sensitive detector and the optical fiber sensor, and calculating deviation by using structural projection to obtain a corrected cursor; and a processing plane network model is constructed in the laser correction server, a galvanometer rotation angle set is calculated, laser scanning is executed, and feedback and correction are performed according to the deviation between the actual light spot position and the theoretical positioning point. According to the invention, the light spot region is extracted through the U-Net model, high-precision light spot segmentation is realized under the complex background and noise interference, and the accuracy of light spot positioning is improved.

The invention discloses a tunnel face digital reconstruction method based on multi-source data fusion, and the method comprises the steps: collecting the multi-source data, such as geological, terrain and landform exploration data, while-drilling real-time data, laser scanning point cloud data and unmanned aerial vehicle shot image infrared data, and carrying out the preprocessing and fusion of the multi-source data; according to the method, deep integration of multi-source data fusion and a digital technology is realized, on the basis of real-time collection of multi-source data, through combination of geometric modeling and mechanical analysis, a crack expansion model is constructed, a tunnel face digital reconstruction technology is constructed, and the shape and stress state of the tunnel face are visually and dynamically displayed, so that the tunnel face is reconstructed. And accurate reconstruction and dynamic tracking of the tunnel face are realized.

The invention relates to the technical field of environment evaluation, and discloses a multi-dimensional environment comprehensive evaluation method and system, and the method comprises the steps: carrying out the comprehensive image shooting of an environment through an unmanned plane carrying device, constructing an environment real scene model through combining laser scanning point cloud data and an algorithm, and providing a precise reference for the layout of a sensor. The method comprises the following steps: selecting proper sensors according to requirements and arranging the sensors; ensuring comprehensive coverage; setting an evaluation period; collecting environmental parameter values, constructing Bayesian network fusion data to obtain parameter evaluation values, calculating actual comprehensive evaluation values by combining subjective weights and objective weights, reflecting environmental conditions, and collecting historical data. And constructing an ARI MA model to predict an environmental parameter evaluation value in the next evaluation period, evaluating the prediction precision, if the precision is low, generating a prediction deviation signal, collecting data in real time in the evaluation period, constructing a complex time sequence, training a CNN-LSTM model for prediction, obtaining a prediction comprehensive evaluation value, and performing comprehensive evaluation on an environmental evaluation area.

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.

Disclosed are a strengthening device and method for improving fatigue, wear and corrosion performance of metals. In the present disclosure, a femtosecond laser device, an optical transmission module, an optical platform, a five-axis mobile platform, a femtosecond laser processing head, and a central processing unit are included, where laser scanning processing is completed by means of the synergy of the five-axis mobile platform and a scanning galvanometer. A femtosecond laser processing process method for regulating and controlling shock wave pressure and surface self-organizing structure characteristics is proposed by the present disclosure, where a work-hardening layer and a wear-resistant and hydrophobic micro-nano structure are prepared on a surface of the metal in one step by means of the femtosecond laser, and simultaneous improvement of the fatigue, wear and corrosion performance of the metals is achieved.

The invention discloses a swing scanning type laser panoramic three-dimensional scanning device based on a high-precision rotary table and a panoramic measurement method, the swing scanning type laser panoramic three-dimensional scanning device based on the rotary table is used for realizing laser scanning, and a camera only collects line contour information of one surface area every time; the problem of plane mirror light path crosstalk formed in different ROI regions is effectively avoided. Line laser can be projected to the plane mirror at any angle, slight front-and-back pitching of the plane mirror does not affect the measurement result, the installation requirement is low, and the device has the advantages of higher spatial resolution, high precision, large scanning range, high measurement scene applicability, high measurement efficiency and wide application range. Compared with a conventional linear scanning mode, the swing scanning type laser scanning device has the advantage of higher information acquisition speed, and when a sample with a large size is reconstructed under a large working distance, the information acquisition efficiency based on the swing scanning type laser scanning mode is far higher than that of translation scanning.

The invention discloses a miniature microwave electric field intensity measurement method based on Rydberg atoms, and belongs to the field of microwave electric field measurement. The implementation method comprises the following steps: scanning through an alkali metal atom gas chamber by using first probe light, scanning through the alkali metal atom gas chamber by using first coupling light, radiating a microwave electric field to be detected to the alkali metal atom gas chamber, obtaining an EIT-AT split spectrum, and obtaining the microwave electric field to be detected; if the EIT-AT splitting spacing is not available, a local oscillation microwave electric field can be radiated to the alkali metal atom gas chamber at the same time, a microwave electric field to be measured is obtained through an atom superheterodyne method, and rapid measurement of the intensity of the miniaturized microwave electric field based on Rydberg atoms is achieved. The device for realizing the method comprises a first laser, a first dichroscope, an alkali metal atom gas chamber, a second laser, a second dichroscope, a photoelectric detector, a first standard gain horn antenna and a second standard gain horn antenna. Frequency locking does not need to be carried out on detection light and coupling light, light path devices can be reduced, and the application range is wide.

The invention discloses a film strength detection method and related equipment, and the method comprises the steps: carrying out the multi-angle broadband scanning sampling of the whole process of an incident light beam penetrating through a lens, recording the transmission light intensity, group phase and scattering power, and generating a reference transmission spectrum matrix; applying low-amplitude periodic ultrasonic vibration disturbance to the lens according to the reference matrix, synchronously obtaining a transmission spectrum time change curve, and performing time domain analysis to obtain a stress response characteristic matrix; determining a detection path by integrating the two matrixes, performing incremental load scratch disturbance along the path, recording data of transmission light intensity and scattering power changing along with the load in real time, and forming a critical damage response data set; performing fine grid transmission light scanning on the scratch and the neighborhood, acquiring multi-angle scattering distribution, and constructing optical characteristic distribution data; and performing multi-dimensional analysis on the data, and outputting a result. According to the scheme, early-stage accurate identification and evaluation of microcracks in a lens film layer and interface hidden defects are realized, and the use reliability of the lens is improved.

The invention discloses a device and a method for promoting methanation of carbon dioxide through temperature oscillation induced by laser scanning. The device comprises a reactor, a laser and a galvanometer, a transparent cover plate is arranged at the top of the reactor, an air outlet is formed in the side surface, and an objective table is arranged in the reactor; a catalyst layer is arranged above the objective table; the catalyst layer is provided with a longitudinally-penetrating gas leading-in hole, a gas flow channel is arranged in the objective table, one end of the gas flow channel is communicated with the gas leading-in hole, and the other end of the gas flow channel is communicated with the gas inlet. Introducing mixed gas containing hydrogen and carbon dioxide into a gas inlet of the reactor, changing the irradiation position of a laser beam emitted by a laser through a galvanometer, and enabling the laser beam to periodically scan and irradiate the catalyst layer to obtain methane. The surface temperature distribution of the catalyst is dynamically regulated and controlled through laser scanning, so that the temperature of a catalytic active site is continuously switched between a high temperature and a low temperature, the thermodynamic limitation of a carbon dioxide methanation reaction can be effectively reduced, and an efficient and stable carbon dioxide methanation process is realized.

The invention relates to the technical field of photoelectric precision instruments, in particular to a laser scanning device with a rear galvanometer, a using method of the laser scanning device and a beauty treatment instrument using the laser scanning device. The laser scanning device comprises a laser head assembly, a shaper, a scanning galvanometer assembly, a beam shrinking lens group, a total reflective mirror, a light guide arm assembly, a beam expanding lens group and a focusing field lens. The laser head assembly emits a laser beam with adjustable parameters, and the laser beam is shaped by the shaper and then scanned by the X-axis scanning galvanometer and the Y-axis scanning galvanometer to form a set shape. The beam shrinking lens group shrinks laser beams, the total reflective mirror changes the conduction direction of the laser beams, the light guide arm assembly conducts the laser beams, the beam expanding lens group restores and expands the laser beams, and finally the laser beams are focused by the focusing field lens. The device has the characteristics of compact structure and stable performance. The invention further provides a using method of the device. The using method comprises the steps of laser beam emitting, shaping, scanning, beam shrinking, conduction direction changing, conduction, beam expanding, focusing and the like. Finally, the invention provides a beauty treatment instrument applying the laser scanning device with the rear galvanometer.

The invention discloses a method for selectively removing a transparent coating on the surface of a workpiece through laser scanning, which comprises the following steps of: firstly, covering the transparent coating on the surface of the workpiece with a transparent flexible film, filling photosensitive glue between the transparent flexible film and the workpiece, and then curing the photosensitive glue on a custom pattern part by using ultraviolet laser to penetrate through the transparent flexible film to obtain the transparent coating on the surface of the workpiece. Then infrared laser is used for heating the cured photosensitive adhesive layer, so that heat is conducted to the transparent coating, the transparent coating is softened, the photosensitive adhesive layer and the transparent coating are further glued, finally, the transparent flexible film is stripped, and the transparent coating of the user-defined pattern part is removed. According to the method, the transparent coating on the surface of the workpiece is rapidly, accurately and selectively removed, the surface of the workpiece is not damaged, and the method is convenient, rapid, high in safety, environmentally friendly and free of pollution.

The invention discloses a channel characteristic map determination method and device, relates to the field of communication, and can determine a high-precision channel characteristic map. In the method, a terminal device and / or an access network device senses an environment based on sensing devices such as a radar, an infrared sensor, a camera, a point cloud laser scanner and the like and a communication pilot signal to sense material information of a scatterer and relative position information of the scatterer and the terminal device and / or the access network device; and the information is sent to the channel feature map management device through a first message, and the channel feature map management device determines a channel feature map according to the first message, so that a high-precision channel feature map is obtained.

The invention relates to the technical field of three-dimensional surveying and mapping, and particularly discloses a laser scanning three-dimensional surveying and mapping device which comprises an assembly platform, one side of the top of the assembly platform is slidably connected with a sliding block, and one side of the top of the sliding block is fixedly connected with a fixing support; through the arrangement of the universal ball, the laser scanner, the negative pole magnet, the first arc-shaped iron core and the second arc-shaped iron core, the telescopic rod is kept in the shortest state through the connecting spring, the laser scanner is used for conducting three-dimensional surveying and mapping on an object below, and the first arc-shaped iron core is connected with a power source to form the positive pole magnet; the second arc-shaped iron core is connected with a power supply to form a positive pole magnet, so that the second arc-shaped iron core is connected with the negative pole magnet in an adsorption manner, and the longitudinal angle of the telescopic rod and the laser scanner at the bottom end can be adjusted; therefore, the effect of adjusting the angle of the laser scanner to scan an object is achieved.

The invention discloses a tempered glass cutting method based on two-step laser scanning, belongs to the technical field of tempered glass cutting, meets the high-precision cutting requirement of whole-plate tempered glass, and is particularly suitable for high-value recycling and recycling of the whole-plate tempered glass in a retired photovoltaic module. Comprising the following steps: presetting a cutting path and placing glass to suspend a scanning area; a two-step laser scanning process is adopted, a defocused or focused laser beam is adopted for scanning along a cutting path to form an initial modified area in the first scanning process, a focused or defocused laser beam is adopted for scanning in the second scanning process, and glass separation is achieved by inducing crack expansion through thermal stress; thermal stress distribution is optimized by combining out-of-focus adjustment and temperature control, and glass separation is realized by inducing crack propagation through thermal stress. The method solves the problems of high breakage rate, path deviation, poor edge quality and the like of traditional cutting, is compatible with tempered glass with different stress strengths (0-600 MPa) and thicknesses (0.7-5 mm), and remarkably improves the recycling rate.

The embodiment of the invention discloses an optical-mechanical system which comprises a light emitting assembly, a light receiving assembly and a light scanning assembly, the light scanning assembly comprises a first light scanning element and a second light scanning element, and the first light scanning element and the second light scanning element are arranged in the first linear direction. One of the light emitting assembly and the light receiving assembly is located on the side, away from the second light scanning element, of the first light scanning element, and the other one of the light emitting assembly and the light receiving assembly is located on the side, away from the first light scanning element, of the second light scanning element. According to the embodiment of the invention, the transmission paths of the transmitted optical signal and the echo optical signal can be prolonged, so that the light divergence angle is reduced, and the ranging performance of an optical-mechanical system is improved; and the light emitting assembly and the light receiving assembly can be separated in space, so that heat dissipation of the light emitting assembly and the light receiving assembly is facilitated. According to the optical-mechanical system provided by the embodiment of the invention, the passing rate of the optical-mechanical system during the 85 DEG C test of the vehicle gauge can be improved on the basis of realizing long distance measurement and high resolution, and the product yield is improved.

The invention relates to the technical field of laser micropore processing, and discloses a device for processing a blade film hole by femtosecond laser, which sequentially comprises an infrared femtosecond laser for emitting laser, a blade hole forming device for guiding light and processing laser beams and a blade fixing device for fixing a blade to be processed along a beam transmission path, the blade hole forming device comprises a laser incidence port, a compact scanning galvanometer system for adjusting a laser scanning path, a rotating assembly capable of rotating around an optical axis and used for adjusting the emitting angle of a laser beam, a focusing system for adjusting laser focusing, a light guide assembly for adjusting light beam incidence and a light guide reflection assembly. The lower end of the scanning galvanometer system is connected with the upper end of the rotating assembly, the upper end of the focusing system is connected with the lower end of the rotating assembly, the lower end of the focusing system is connected with the upper end of the light guide assembly, and the lower end of the light guide assembly is connected with the light guide reflection assembly. And the infrared femtosecond laser, the compact scanning galvanometer system and the focusing system are all controlled by the control system. According to the system, blade film hole machining in a complex track can be achieved.