92 results about "Specular reflection" patented technology

The invention discloses a visual inspection sorting method and system for surface defects of intelligent electric meter shell injection molded parts, and relates to the technical field of visual inspection, and the method comprises the following steps: selecting an intelligent electric meter shell as a reference part, dividing the surface of the shell into a plurality of functional partitions, collecting structured light form and brightness information, and obtaining a reference appearance map; and positioning a to-be-detected electric meter shell to a position consistent with the reference part, obtaining the online three-dimensional form and brightness response of each functional zone, mapping the online three-dimensional form and brightness response to the reference appearance map, marking a stable mirror surface with high brightness, and interpolating along an observation track to generate an online appearance map. According to the invention, through functional partition sampling layout of a window sealing area, a wiring terminal area, a stud and reinforcing rib area, a nameplate and two-dimensional code area and a general decoration side wall area, and in cooperation with double-light-source collection of diffused light and oblique incident light combined with structured light, a reference appearance map containing a highlight tolerance mask is constructed; stable characterization of mirror reflection and a transparent window is realized, and false detection caused by high brightness of the mirror surface is remarkably reduced.

The invention discloses a composite aluminum foil current collector coating thickness detection device, and relates to the technical field of coating thickness detection, the composite aluminum foil current collector coating thickness detection device comprises a thickness detection member, the thickness detection member comprises an upper wheel set, a lower wheel set, a detection rack and a laser detector, and the upper wheel set and the lower wheel set are respectively penetrated by an upper shaft and a lower shaft; the detection frame and the lower shaft rotate synchronously to change the inclination angle of the laser detector, and the tensioning wheel can ascend and descend to be used for adjusting the tightness of the composite aluminum foil on the lower wheel set. The two sides of the aluminum foil are clamped and the aluminum foil is transversely stretched, so that the aluminum foil is flatly attached to the measuring wheel. It is ensured that the aluminum foil is in a flat, tight and vibration-free state when passing through a laser measurement point, which is the premise of obtaining accurate measurement data. The whole laser detection frame can be used as a whole, the lower shaft supported by the aluminum foil synchronously rotates to change the angle of incident light, so that a specular reflection light path of ambient light deviates from the laser receiver, laser beams can still keep nearly vertical incidence, and reflected light of the laser beams can be effectively received.

The invention discloses an agricultural plant protection unmanned aerial vehicle path planning method and system, and relates to the technical field of agricultural unmanned aerial vehicle flight control, and the method comprises the following steps: S100, constructing an illumination and time sequence observation layer, collecting an incident angle, a polarization parameter and brightness gradient information from an operation environment, generating a light spot risk baseline according to the information, and establishing a time anchor point for dynamic identification. According to the method, a light spot risk baseline is constructed based on multi-source illumination, mirror reflection is stripped, abnormal tracks are identified, false obstacles are calibrated, a reverse illumination mask is generated to serve as a path boundary, task perception information is fused to update weights, differential privacy is introduced to correct deviation, and a reverse phase light graph and a shadow beacon are combined. Dynamic traction and closed-loop regulation and control of an unmanned aerial vehicle path are realized, and planning precision and flight safety are improved.

A multilayer coating film includes a lustrous layer containing a luster material, and a colored layer stacked on the lustrous layer, containing a reddish coloring agent, and having translucency. For the lustrous layer, when a light incident angle (an angle with respect to a line perpendicular to the surface of the lustrous layer) is 45° and L*(θ) represents the L* value of the lightness index of reflected light measured at a light receiving angle (the angle of inclination toward a light source side from a specular reflection direction) θ, L*(θ) at 45°≤θ≤80° and 100°≤θ≤110° is 10 or less, and when the luster material is projected onto the bottom surface of the lustrous layer, the percentage of the projected area of the luster material on the bottom surface is 3% or more to 70% or less per unit area.

This invention discloses a robust method, device, and storage medium for laser spot recognition and tracking in complex lighting environments, belonging to the field of computer vision and target detection. Addressing the problems of high false alarm rates and poor robustness in existing methods under interference such as strong ambient light, dynamic projector flicker, and specular reflection, this invention proposes a multi-layered processing framework of "detection-verification-tracking." First, adaptive threshold segmentation is performed on the current frame image to extract candidate regions with brightness higher than the background. Second, multi-dimensional feature verification is introduced. Based on the inherent physical properties of the laser spot (such as spectral matching degree, shape and size, and two-dimensional Gaussian intensity distribution) and temporal motion patterns, candidate regions are jointly verified and filtered to effectively remove various homogeneous and heterogeneous interferences. Finally, through a multi-target trajectory management module, the filtered candidate spots are correlated with historical trajectories (e.g., using the Hungarian algorithm), and combined with Kalman filter prediction and state machine-based trajectory lifecycle management (temporary, confirmed, lost, terminated), stable tracking and output of the laser spot are achieved. This invention does not rely on a large amount of training data, has high computational efficiency, and can significantly improve the accuracy and robustness of laser spot recognition under complex dynamic lighting conditions, providing a reliable front-end perception guarantee for vision-based high-precision laser spatial positioning and interaction systems.

This invention discloses a bimetallic hybrid metasurface that achieves polarization-selective absorption and tunable liquid immersion. The metasurface consists of a three-layer structure: a bimetallic hybrid layer, a silicon dioxide layer, and a silver reflective layer. The bimetallic hybrid layer is composed of aluminum and titanium nanoribbons. The bimetallic hybrid metasurface achieves perfect absorption of incident light under x-polarized light at the resonant wavelength and specular reflection of incident light under y-polarized light, thus exhibiting a high extinction ratio. Furthermore, the absorption peak wavelength of the metasurface can be continuously and dynamically tuned by adjusting the unit period of the metasurface or by utilizing active tuning through liquid immersion. The bimetallic hybrid metasurface proposed in this invention achieves high-contrast polarization-selective absorption and possesses advantages such as simple structure, ease of integration, and dynamic tunability, thus it can be widely applied in practical applications such as novel optical polarizers and photodetectors.

This invention discloses a detection method, system, and medium based on line spectral confocalization. The method includes: determining the number of peaks; if the number of peaks is one, adjusting the light intensity value corresponding to the peak wavelength to be within the light intensity working range; if the number of peaks is not less than two, extracting the light intensity value corresponding to the peak wavelength, analyzing the peak morphology, and identifying the peak wavelength associated with each reflection region; analyzing the offset of the height of the specular reflection region, correcting the detection height of the specular reflection region to obtain the height difference between the reflection regions covered within the width of the line spot at any position on the scanning line; and adjusting the distance of the sensor relative to the surface of the object under test according to the height difference, so that there is one and only one valid peak in the spectral image at any position on the scanning line. This invention can accurately calculate the height difference between the specular reflection region and the diffuse reflection region covered within the width of the line spot, improving the signal-to-noise ratio of the spectral image and expanding the application scenarios.

The invention discloses a metal truss antenna housing and a design method thereof, and belongs to the field of radar antennas. In order to solve the problem that an antenna radiation pattern of an existing antenna housing is seriously distorted, the metal truss antenna housing comprises a metal framework and a skin arranged on the surface of the metal framework, the metal framework is of a truss structure, and a first section of at least part of rod pieces in the metal framework comprises a connecting part. The reflecting part is connected with the connecting part; the reflecting part is used for realizing non-mirror scattering between a reflected wave and the first cross section of the partial rod piece; the connecting part is used for realizing the connection between the rod pieces, and the first cross section is the cross section of one side, facing the antenna, of the rod piece. According to the metal truss, mirror reflection is converted into non-mirror scattering through the arrangement of the reflection part, so that distortion of an antenna pattern is effectively suppressed, particularly, raising of a far-region minor lobe level and loss of main lobe gain are reduced, and meanwhile, the original high-strength advantage of the metal truss is completely reserved through the arrangement of the connection part.

The invention discloses a manufacturing method of a high-power photovoltaic module, and aims to solve the technical problems that specular reflection on the lower surface of glass of an existing crystalline silicon photovoltaic module causes light loss, the utilization rate of ultraviolet light is low, and aging of a packaging adhesive film is easily accelerated. The method comprises the following steps: firstly, carrying out hydrofluoric acid etching or micron-order fusion embossing treatment on the lower surface of photovoltaic front glass to form a concave-convex light trapping structure so as to reduce mirror reflection of incident light; the upper surface of the glass is coated with a polyfluorene down-conversion material layer with the thickness of 50-100 nm, and ultraviolet light is converted into high-responsivity blue light. Subsequent procedures of cell scribing, multi-main-grid series welding, POE adhesive film lamination, EL and appearance detection, vacuum lamination, trimming and framing and the like are carried out to complete assembly preparation. Tests show that in a 66-version assembly, only the lower surface of the glass is treated, so that the power can be improved by 2.1 W compared with that of a traditional process, the power is improved by 5.8 W after the lower conversion film layer is overlaid, meanwhile, the aging effect of ultraviolet light on the adhesive film is weakened, the service life of the assembly is prolonged, and the process is compatible with an existing production line and has remarkable industrial application value.

The invention relates to an organic solid waste pyrolysis device utilizing mirror reflection to gather solar energy and an operation method.The device is composed of a light reflection module, a heat transfer module, a heating module and a sample placing room, the light reflection module is composed of eight reflectors arranged around the sample placing room by 360 degrees and can reflect the solar energy to a heat collection plate, and the heat transfer module is used for transferring heat to the sample placing room; the heat collection plate converts solar energy into heat energy and transmits the heat energy to the heating module. The heating module is composed of a heating column and a heating disc and can evenly heat the sample placing room. Solar energy is gathered through the light reflecting mirror and the heat collecting plate and converted into heat energy, the heat energy is transmitted into the inner container through the heating column, and organic solid waste is pyrolyzed. The sample placing room adopts a sealing design, and temperature monitoring and automatic regulation and control are carried out through a temperature sensor and a heat radiation instrument. The device has a good solar energy utilization rate and a uniform heating effect, and can perform pyrolysis of organic solid wastes in an efficient and environment-friendly manner so as to achieve the purpose of resource utilization of the wastes.

The present invention teaches a real-time hybrid ray tracing system for non-planar specular reflections. The high complexity of a non-planar surface is reduced to low complexity of multiple small planar surfaces. Advantage is taken of the planar nature of triangles that comprise building blocks of a non-planar surface. All secondary rays bouncing from a given surface triangle toward object triangles keep a close direction to each other. A collective control of secondary rays is enabled by this closeness and by decoupling secondary rays from primary rays. The result is a high coherence of secondary rays.

The invention relates to the technical field of machine vision detection, and discloses a pneumatic valve block surface cleanliness detection method based on machine vision, and the method comprises the following steps: S1, based on the characteristics that the surface of a pneumatic valve block is strong in light reflection and diversified in pollutant type, adopting three light source modes of annular polarized light, low-angle dark field illumination and coaxial white light, millisecond-level synchronous imaging is carried out on the same valve block area through the beam splitter prism and the three-way synchronous triggering camera, and a multi-mode original image set is generated. Polarization inhibition reflection, dark field scattering enhancement and bright field uniform illumination are integrated through a multi-mode light source synchronous acquisition mechanism, the limitation of single light source imaging is overcome, metal surface specular reflection interference is effectively eliminated, the detectability of low-contrast pollutants such as oil stains is effectively improved, and the detection efficiency is improved. And dynamically weighting high-frequency edge and low-frequency texture components by an adaptive wavelet fusion strategy.

This electronic auscultation device comprises: a diaphragm that vibrates, when in contact with a living body which is an object to be measured, together with the living body, the diaphragm having a light reflection part provided on a surface of the diaphragm opposite to a contact surface that contacts the object to be measured; a light source; a light receiving element that has a light receiving surface for receiving light emitted from the light source and specularly reflected by the light reflection part, and generates a signal corresponding to an amount of light reaching the light receiving surface; a selection unit that selects any of a plurality of modes including a first mode in which biological vibration including a first frequency band is measured, and a second mode in which biological vibration including a second frequency band lower than the first frequency band is measured; and a sensitivity adjustment unit for adjusting a sensitivity of the light receiving element. The sensitivity adjustment unit adjusts the sensitivity of the light receiving element so as to have a first sensitivity when the first mode is selected by the selection unit, and adjusts the sensitivity of the light receiving element so as to have a second sensitivity lower than the first sensitivity when the second mode is selected by the selection unit.

According to the present disclosure, there is provided a technique capable of suppressing an erroneous detection of a presence or absence of a substrate caused by a light receiver receiving a specularly reflected light. There is provided a technique that includes: a holding structure provided with a placing surface capable of accommodating a substrate thereon; a light detector including: a light emitter arranged to irradiate an irradiation light toward a back surface of the substrate placed on the placing surface; and a light receiver arranged to be capable of receiving a diffusely reflected light of the irradiation light irradiated from the light emitter without receiving a specularly reflected light of the irradiation light; and a controller configured to be capable of determining a presence or absence of the substrate based on a light receiving state of the light receiver.

This invention discloses a machine vision-based method and system for monitoring medication dispensing. The method involves acquiring a multi-view polarized image sequence and corresponding depth image sequence of the medication dispensing operation area; performing physical-level specular de-illumination on the multi-view polarized images and identifying transparent material regions to generate multimodal fusion data with transparency priors; detecting the operator's hand posture in real time to generate a dynamic occlusion mask; constructing and training a dynamic neural radiation field, incorporating a temporal de-occlusion prior loss during training to utilize unoccluded spatiotemporal information to recover the visual features of the area marked by the dynamic occlusion mask; and based on the trained dynamic neural radiation field, removing the hand region and rendering a de-occluded and specular-de-illumination virtual monitoring view. This invention solves the problems of target loss, inaccurate measurement, and poor interpretability caused by specular reflection, transparent objects, and dynamic occlusion.

The application discloses a kind of wet environment under power line hanging material quality identification method, device, electronic equipment and storage medium, belong to power line intelligent inspection technical field, the method includes: obtaining the original image data of the hanging object to be identified, generates gray matrix and extracts texture feature;Based on gray histogram calculation mirror surface reflection peak and diffuse reflection proportion, determine wet state;Combining wet state is compensated to texture feature, obtain humidity correction feature;Wavelet decomposition is carried out to it, according to the relationship between high and low frequency energy to generate dry and wet verification mark;Verification mark and correction feature are input into convolutional neural network, extract multi-layer feature and carry out cosine matching with material template, output hanging object material classification result.Therefore, by implementing the present application, the problem that the optical characteristic distortion caused by water film reflection can be solved, which leads to the problem that the conventional visual detection method is greatly reduced in the wet scene for the hanging object material identification accuracy.

The invention discloses a multi-reflection suppression method and device based on a super depth-of-field fusion algorithm, and relates to the technical field of image processing, and the method comprises the steps: integrating a micro lens array and a micro polarizer array to carry out the single exposure of a scene, generating a multi-depth-of-field image sequence after decoding, and outputting a four-dimensional data cube; based on the four-dimensional data cube, generating a global clear image and an intermediate polarization degree panoramic depth image through double-path parallel super depth-of-field fusion; outputting a reflective mask and a repair image through a reflective repair model by using the intermediate image; and performing pixel-level fusion with the global clear image by taking the reflective mask as a guide to generate an anti-reflection super-definition image. The objective of the invention is to solve the technical problem that a conventional super-depth-of-field fusion algorithm may fuse a reflection area as a clear feature into a final image in a scene with mirror reflection, so that the reflection is enhanced but not suppressed.

The invention provides a metallic high-shading PP (polypropylene) material as well as a preparation method and application thereof, and the metallic high-shading PP material comprises the following components in parts by weight: 0-100 parts of homopolymerized PP resin, 0-100 parts of copolymerized PP resin, 1-5 parts of an opacifier, 0.2-1.5 parts of a weather-proof agent and 0.2-0.6 part of an antioxidant, the opacifying agent comprises the following components in parts by weight: 50-80 parts of metal powder, 10-30 parts of a metal powder modifier and 10-20 parts of a lubricant. The opacifying agent used in the invention comprises the metal powder and the metal powder modifier, and the metal powder modifier can pretreat the metal powder, so that agglomerates generated by local agglomeration of metal powder particles are dissociated, an electrostatic stabilization effect and a steric hindrance stabilization effect are formed, and the metal particles are uniformly distributed in a substrate and float on the surface to effectively form a mirror reflection layer; the glossiness and the lightness are improved.

The surface temperature measurement method of the present application obtains the amount of radiation light of the surface of a measurement target object, irradiates light to the surface of the measurement target object under specular reflection conditions, obtains the amount of specular reflection light, irradiates light to the surface of the measurement target object under diffuse reflection conditions, obtains the amount of diffuse reflection light, calculates the emissivity of the surface of the measurement target object using a model representing the relationship between the emissivity of the surface of the measurement target object and the specular reflectance and the diffuse reflectance, the obtained amount of specular reflection light, and the obtained amount of diffuse reflection light, and calculates the surface temperature of the measurement target object using the obtained amount of radiation light and the calculated emissivity.

A cleaning machine table comprises a cleaning pool, a cleaning device and a control device, the manipulator is suitable for grabbing the wafer and transmitting the wafer; a transmitting end of the laser detection module is located on one side of the cleaning pool, a receiving end of the laser detection module is located on the other side of the cleaning pool, and a light path between the transmitting end and the receiving end corresponds to the position of the wafer grabbed by the manipulator; the first baffle is located on one side of the receiving end away from the transmitting end; and the first anti-reflection layer is arranged between the first baffle and the receiving end, and the first anti-reflection layer is suitable for inhibiting mirror reflection of the laser. The first anti-reflection layer is arranged, so that laser subjected to scattering and diffuse reflection on the surface of the wafer is prevented from entering the surface of the first baffle and being reflected to the receiving end through the mirror surface of the first baffle, reflected light received by the receiving end is reduced, and the situation that the light received by the receiving end is too complex is avoided. Therefore, the receiving end can judge the position of the wafer according to the received laser from the transmitting end, so that machine shutdown caused by wrong feedback of the laser detection module to a machine is avoided.

The invention relates to the technical field of curvature radius detection, and discloses a large-aperture spliced mirror curvature radius detection system based on a photon lead, and the system comprises an integrated optical waveguide interference array which is used for being placed in the center of a system region and transmitting two beams of similar spherical waves to a detected mirror surface; the frequency carrier module is used for modulating interference fringes formed by the light beams reflected by the measured mirror surface so as to obtain the actual wavefront of the system; the signal processing module is used for performing Fourier transform on the modulated interference fringes to obtain the wavefront curvature of the system; the laser tracker is used for determining the positions of input and output light spots; and the curvature calculation module is used for obtaining the accurate curvature radius of the measured mirror surface. According to the invention, an integrated optical waveguide interference array is adopted to emit spherical waves, so that the assembly error of discrete optical elements is reduced, and the system stability is improved; the interference fringes are modulated through frequency carrier waves, and the Fourier transform algorithm is combined, so that the analysis precision of the wavefront curvature is remarkably improved.

An electronic device includes: a diaphragm having a contact surface configured to contact an object and a reflective medium on a surface of the diaphragm opposite to the contact surface, the diaphragm configured to elastically deform when pressed by the object at the contact surface; a light emitting diode; a diaphragm configured to narrow light emitted by the light emitting diode; a photodetector having a light receiving surface configured to receive light passing through the aperture and specularly reflected by the reflective medium; an output unit configured to output a signal based on light in an irradiation area formed on the light receiving surface by the reflected light; and a housing that encloses the light emitting diode, the diaphragm, and the photodetector, in which the diaphragm is configured to form a part of an exterior of the electronic device together with the housing, and in which a boundary of the irradiation area moves according to a displacement of the contact surface caused by an elastic deformation of the diaphragm, and a boundary defined by the light narrowed by the aperture and specularly reflected by the reflective medium, thereby changing the area of the irradiation region on the light receiving surface and changing the output of the output unit.

The invention provides a decorative plate which can visually recognize different appearance designs without using a reflecting layer. The decorative plate is provided with: a first member that transmits light; a second member, the front surface of which is in contact with the back surface of the first member, the refractive index of which is the same as or substantially the same as that of the first member, the transmittance of which is lower than that of the first member, and the front surface of which has irregularities; and a light source configured to irradiate light from the front side of the second member. When the light source is turned off, since the intensity of the specular reflection light and the diffuse reflection light on the first member is higher than the intensity of the diffuse reflection light on the second member, a viewer who visually recognizes the decorative plate cannot visually recognize the shape of the front surface of the second member. When the light source is turned on, since the intensity of the diffuse reflection light on the second member is higher than the intensity of the specular reflection light and the diffuse reflection light on the first member, a viewer who visually recognizes the decorative plate can visually recognize the shape of the front surface of the second member.

The invention discloses a defect detection method and a defect detection system for a specular reflector, the specular reflector is arranged near the critical distance of fringe disappearance, and the local z-axis displacement Z / slope change (local concave-convex surface) caused by the curved surface of the defect can destroy the original fringe cancellation adjustment. According to the adjustment process, the geometric displacement Z which is difficult to directly measure is converted into optical parameter change which can be accurately electrically controlled and quantized, so that high-sensitivity differential measurement of Z is realized, defects are sensitively detected, and the required cost is lower. Meanwhile, surface defect information (such as concave-convex points and scratches) of high-frequency stripes is automatically filtered by utilizing the inherent spatial frequency filtering characteristic of the stripe cancellation phenomenon, so that a defect measurement result is more accurate and reliable, the requirement on stripe quality is not high, and the cost is lower.

The embodiment of the specification provides a pair of glasses, which comprises a support, a light source and a plane mirror surface, wherein the support comprises a frame and a temple; the light source is arranged on the support; the plane mirror surface is arranged at a distance from the light source; a light beam emitted by the light source enters a target eye of a wearer after being reflected by the plane mirror surface, and a virtual picture corresponding to the light beam is presented in front of the pair of glasses; and the incident angle or the incident position of the light beam on the plane mirror surface is adjustable.

The invention discloses a material identification method in a high-temperature dust multi-condensation environment. The method comprises the following steps: S1, multi-modal data synchronous acquisition: acquiring data by adopting a three-light fusion sensor; s2, environmental parameter real-time monitoring: acquiring environmental data through a dust sensor and a hygrothermograph; s3, dynamic data fusion: fusing function infrared features, radar features and spectral features by using an adaptive weighted fusion algorithm; s4, condensation interference elimination: performing polarization hyperspectral processing, calculating Stokes vector separation specular reflection and diffuse reflection, and reconstructing a spectral curve without water film interference; s5, material matching identification: inputting the processed features into a pre-training model; and S6, triggering self-cleaning. According to the method, thermal infrared, millimeter wave radar and hyperspectral three-waveband data are fused, the identification bottleneck of a single mode in an extreme environment is broken through, the problem that material identification is difficult in the extreme environments of high temperature, high dust, multiple condensation and the like is solved, and the method has outstanding industrial popularization prospects.

To incorporate multiple detection functions into a recording device, a separate sensor is required for each detection function. As the number of detection functions increases, the cost and size of the recording device also increase. [Solution] A recording device comprising a light-receiving unit equipped with a plurality of light-receiving elements, an aperture for allowing specularly reflected light and diffusely reflected light from a light-emitting unit reflected by an object to pass to the light-receiving unit, and an amplification means for amplifying the signal from the light-receiving elements of the light-receiving unit, wherein the device has a selection means for selecting at least one of the plurality of light-receiving elements, and controls the selection of a light-receiving element by the selection means and the connection between the light-receiving element selected by the selection means and the amplification means to switch according to the detection mode for detecting an object.

The invention discloses a ceramic green surface bubble identification method based on machine vision, particularly relates to the field of image processing and surface defect detection, and is used for solving the problem of false detection caused by artifacts generated by bubble brightness overturning and mirror surface reflection of a green glaze surface under different illumination. A first illumination image and a second illumination image are collected, an alignment image group is established, local illumination normalization and peripheral texture compensation are executed to form a highlight texture removal image group, a symmetric residual image and an abnormal response are calculated to obtain a candidate region set, and the candidate region set establishes corresponding association in the alignment image group to obtain a highlight texture removal image group. Extracting a main reflection direction and calculating a slip normalization quantity of the main reflection direction and a slip normalization quantity of a vertical reflection direction, outputting bubble credibility through logistic regression, dividing a bubble region and a reflection artifact region, generating a bubble mask to update a reference texture, updating a highlight compensation model through the reflection artifact region, and performing consistency verification on a compensation result. And outputting a bubble recognition result.

The embodiment of the invention discloses a three-dimensional measurement method and device based on polarization structured light, equipment and a medium. The method comprises: determining the total amount of reflected light according to a surface polarization fringe image; extracting components to obtain a first total illumination intensity of the reflected light, wherein the first total illumination intensity is represented based on imaging characteristics of the polarization imaging device; the second total illumination intensity is represented based on the projection characteristics of the polarization projection device; performing channel fusion on the second total illumination intensity based on different polarization angles to recover a polarization fringe image, and performing phase shift decoding processing to obtain phase distribution; and mapping to obtain a surface three-dimensional coordinate. According to the invention, the collected surface polarization fringe images with different polarization angles are collected at the same time, the introduction of mechanical errors and polarized light calibration is avoided, the influence of time-varying ambient light reflected by a mirror surface is suppressed, and the technical problem that the measurement precision is not high when three-dimensional measurement is carried out based on structured light under dynamic ambient light illumination is solved.

The invention discloses a precision lens surface flaw detection device based on polarization illumination. The precision lens surface flaw detection device comprises an illumination module used for providing a polarization light source; the objective table is used for placing a to-be-tested lens; the imaging module is used for collecting surface image data of the to-be-detected lens, and the imaging module comprises a camera, an imaging lens, an analyzer and a control unit; the imaging lens is arranged close to the camera; the image processing module is connected with the camera, and the image processing module is used for processing the surface image data and then identifying flaws; wherein the polarization direction of the polarization analyzer and the polarization direction of the polarizer are in an orthogonal relationship. The cross-polarization technology is utilized, harmful specular reflection light can be effectively eliminated, scattered light caused by surface flaws can be reserved and enhanced at the same time, therefore, defect images with extremely high contrast are obtained, and the detection sensitivity and reliability are greatly improved.