539 results about "Diffuse reflection" patented technology

The embodiment of the invention provides a real-time collection method and system for welding heat input, and the method comprises the steps: sensing the displacement movement of a welding gun or a welding wire through a diffuse reflection photoelectric switch array installed on the surface of a pipeline, and generating a corresponding pulse trigger signal; current data and voltage data of a welding loop are sensed through a Hall sensing system, and corresponding analog electric signals are generated; synchronously acquiring the pulse trigger signal and the analog electric signal through a multi-channel data acquisition device, and converting the analog electric signal into a digital signal with a timestamp; real-time welding speed data are calculated according to the time sequence of the pulse trigger signals and the preset space geometrical relation of the diffuse reflection optoelectronic switches; performing multi-stage filtering processing on the current data and the voltage data; a unified timestamp is determined, and time sequence matching is conducted on the filtered current data, the filtered voltage data and the filtered welding speed data based on the unified timestamp; and calculating to obtain a welding heat input value.

The invention discloses a medical endoscope with an extinction anti-pollution structure, and relates to the technical field of endoscopes, the medical endoscope comprises an endoscope main body, the front end of the endoscope main body is provided with a camera module, and the periphery of the camera module is provided with an illumination light source for illumination, an outer sleeve and an extinction structural member; a hollow observation opening is formed in the center of the endoscope body in a penetrating mode, a light blocking sinking table used for blocking front direct light beams emitted by the illumination light source is arranged outside the hollow observation opening in a surrounding mode, and a deflection bevel edge used for diffraction deflection of light rays emitted by the illumination light source is further arranged outside the light blocking sinking table. Through the synergistic effect of physical shielding of the light blocking sinking table and diffraction deflection of the deflection bevel edge, front-side direct stray light of the illumination light source is cut off from the source, side-emitting and oblique-emitting light rays are deflected in a targeted mode, light spot and light fog pollution caused by diffuse reflection of the front end of a transparent guide sheath or a catheter is remarkably eliminated, and the imaging definition is remarkably improved.

The invention relates to the technical field of computer vision, in particular to a three-dimensional reconstruction method and device based on optical polarization and stereoscopic vision principles. The three-dimensional reconstruction method sequentially comprises the steps of image preprocessing, polarization parameter extraction, binocular stereo matching, disparity map generation and optimization, normal vector correction, depth information fusion and three-dimensional point cloud reconstruction and modeling generation. A polarization normal vector field is constrained and corrected as a'skeleton ', and the azimuth angle pi ambiguity problem which puzzles polarization three-dimensional reconstruction for a long time is solved; high-frequency surface normal details contained in corrected polarization information are used as textures to enhance and fill up depth information loss of binocular vision in weak texture and repeated texture areas, the inherent limitation of a single sensing technology in a three-dimensional reconstruction task is overcome, and the three-dimensional reconstruction of the surface of an object, especially a diffuse reflection object, is realized. And high-precision and high-integrity three-dimensional shape recovery is realized.

The invention discloses a land environment shadow region optical feature recovery method and system, and the method comprises the steps: synchronously collecting a visible light image, a near infrared spectrum image and three-dimensional point cloud data of a target land region through a multi-mode sensor, and generating multi-source fusion data with a space-time alignment attribute; based on the multi-source fusion data, constructing an illumination transmission physical model of the scene, and separating a direct illumination attenuation component and an indirect illumination diffuse reflection component of a shadow region; performing compensation reconstruction on the direct illumination attenuation component by using a generative adversarial network, and generating an initial recovery image after shadow elimination; and outputting a final recovered image with global illumination consistency and local detail authenticity by adopting a cross-scale attention fusion mechanism. By using the embodiment of the invention, the real spectral attribute and rich spatial texture details of the ground feature can be maintained, and the visual consistency of the image and the reliability of subsequent quantitative application are improved.

The invention relates to a non-Lambert surface emissivity inversion method, belongs to the technical field of infrared optical measurement and radiation modeling, solves the technical problems of low precision and poor model stability of non-Lambert surface emissivity inversion, and comprises the following steps: measuring original radiation intensity of a non-Lambert surface of a to-be-tested material in different emergent directions; converting the original radiation intensity into directional reflectivity; on the basis of the generalized Lorentz function, diffuse reflection background items are superposed, and a physical prior model is constructed; physical constraint is carried out on the physical prior model parameters; the parameter residual network generates a parameter field, and the parameter field is input into the optimized physical prior model; and carrying out hemispherical integration, and converting the directional reflectivity into directional-hemispherical emissivity. The device and the method are used for infrared thermal imaging measurement, material radiation characteristic characterization and engineering detection in a complex environment.

The invention discloses a shaving board flatness and surface defect on-line detection device, and belongs to the technical field of shaving board optical detection.The shaving board flatness and surface defect on-line detection device comprises conveying roller equipment used for conveying shaving board bodies, a driving mechanism is erected on the conveying roller equipment, and a light adjusting mechanism is arranged in an outer shell of the driving mechanism; the light adjusting mechanism comprises a mounting frame, U-shaped frames and side frames, each U-shaped frame is provided with a first rotating shaft and a second rotating shaft, the two first rotating shafts are jointly wound with a first light-transmitting belt for adjusting illumination light, and the two second rotating shafts are jointly wound with a second light-transmitting belt for adjusting light colors. The light intensity can be automatically adjusted, shaving boards of different types and different roughness degrees can be adapted, the light intensity is adjusted to resist diffuse reflection or avoid overexposure, meanwhile, light colors are changed according to the defect types of the shaving boards and the color of the board surface, defect characteristics are enhanced, interference of wood dust is isolated, and the recognition precision is improved.

The invention discloses an illumination scene rendering method and device, a computer readable storage medium and a computer program product, and the method comprises the steps: setting a plurality of illumination probes in a three-dimensional Gaussian splashing scene, and determining a first spherical harmonic coefficient of each illumination probe based on the light field data of the three-dimensional Gaussian splashing scene, the illumination probe is used for collecting omnidirectional illumination information of a spatial point of a three-dimensional Gaussian splashing scene; for each unshielded pixel of the to-be-rendered object, determining indirect diffuse reflection light for the to-be-rendered object based on a target spherical harmonic coefficient of a target illumination probe determined by the unshielded pixel, the to-be-rendered object being an object placed in the three-dimensional Gaussian splash scene; for each unshielded pixel, based on the normal direction of the unshielded pixel and the constructed hierarchical Z buffer, indirect specular reflection light for the to-be-rendered object is determined through screen space reflection and a reflection ball; and fusing the indirect diffuse reflection light, the indirect specular reflection light and the direct light to generate an illumination rendering result for the to-be-rendered object.

The invention relates to a structured light imaging system suitable for semiconductor SIP system-in-package, which comprises a central camera, and a plurality of groups of DLP projections and side cameras are symmetrically arranged on two sides of an optical axis of the central camera; the DLP projector emits parallel light beams to irradiate the surfaces of the crystal grains, and the side cameras receive reflected light rays in parallel; the device further comprises a control unit, and the control unit sequentially controls the DLP projectors and the side cameras which are symmetrically arranged in pairs to synchronously work and processes image data so as to reconstruct the three-dimensional morphology of the surface of the crystal grain. When incident light emitted by the DLP projector irradiates the surface of the crystal grain at a specific angle, specular reflection light of the incident light propagates in the symmetrical direction according to the reflection law. The side camera and the DLP projector are symmetrically arranged, so that the optical axis of the side camera is consistent with a reflection light path, and a highlight area image generated by mirror reflection is accurately captured. The layout breaks through the limitation of the traditional diffuse reflection hypothesis, so that the morphology information of the high-reflection surface can be completely acquired, and the accuracy and reliability of crystal grain three-dimensional reconstruction in SIP packaging are remarkably improved.

The invention discloses a gray scale imaging analysis method and system of a tailing ash content meter, and relates to the technical field of tailing ash content detection.The method comprises the steps that based on a registered multi-angle gray scale image set, the dispersion degree of the reflected light intensity corresponding to each pixel coordinate along with the change of the illumination direction is determined, and the dispersion degree of the reflected light intensity is determined; generating a reflection intensity variability distribution diagram of each pixel; performing unsupervised clustering on all pixels according to the reflection intensity variability distribution diagram to obtain a high-variability pixel cluster and a low-variability pixel cluster; aggregating and averaging the reflected light intensity values of the pixels in the low-variability pixel cluster in each illumination direction to obtain a stable diffuse reflection intensity characterization value; according to the method, interference signals caused by mirror surface highlight and shadow shielding are accurately stripped, effective reflection information reflecting the tailing ash content essence is fully reserved, the extracted stable diffuse reflection intensity characterization value can truly map the mineral component characteristics of tailings, and the accuracy and stability of ash content detection are remarkably improved.

The invention discloses an anesthesia preoperative risk assessment method and system based on multi-source data fusion, and relates to the technical field of medical informationization, and the method comprises the following steps: S001, building a cross-time-scale illumination and skin state combined observation baseline, injecting a micro-amplitude polarization mark in an image collection chain, and obtaining an image collection chain; extracting a hot spot track and a boundary definition curve through frame-by-frame image analysis, and constructing a time reference point set of a reflection behavior; and S002, based on the time reference point set, executing optical reflection decomposition on the observation image sequence, separating mirror reflection and diffuse reflection components under a unified light field model, generating a double-domain characteristic spectrum of a reflection domain and a blood flow response domain, and constructing an artifact risk map. According to the method, the time reference point and the polarization mark are constructed, illumination and reflection behavior modeling and separation are achieved, anti-fact playback, causal checking and dynamic regulation are combined, artifacts are accurately removed, real blood flow features are extracted, and the accuracy and stability of preoperative risk assessment are improved.

The utility model relates to the technical field of lighting devices, and discloses an energy-saving lighting device for rail transit, which comprises a supporting rod, a lampshade is fixedly connected to the top end face of the supporting rod, a lamp bead is fixedly connected to the inner bottom face of the lampshade, and a reflection assembly is arranged on the outer wall of the lampshade. According to the energy-saving lighting device for the rail transit, one part of light irradiates a ceiling of a building through a second light transmitting opening, the ceiling serves as a large diffuse reflection surface to reflect the light, large-area and uniform diffusion lighting is achieved, the spatial brightness sense and the visual level are improved, the other part of light irradiates the ground, the angle and the position of a second reflecting plate are adjusted, and the illumination effect is improved. Therefore, the same lamp can be suitable for different platform structures, installation heights and width differences, a light path on one side can be actively closed according to site requirements, illumination on the other side is strengthened, higher illumination is formed in a designated area, and key illumination is carried out.

The invention relates to the technical field of image processing, and discloses a facial health state assessment method and system based on layered optical modeling. The objective of the invention is to solve the problems of poor face health state evaluation precision and robustness caused by rough optical modeling, mixed reflection components, weak environmental adaptability and insufficient multi-dimensional health index fusion capability in the prior art. The method comprises the following steps: synchronously acquiring a user face video sequence comprising at least two different spectral bands through a multispectral imaging device; constructing a multilayer optical transmission model of the skin tissue, and separating a specular reflection component and a diffuse reflection component from the face video sequence; extracting a physiological time sequence signal related to subcutaneous blood flow activity from the separated diffuse reflection component, and calculating heart rate, heart rate variability and blood oxygen saturation parameters; and fusing the physiological parameters and expression and micro-expression features extracted from the facial video sequence, and outputting quantitative evaluation results of fatigue degree, pressure level and emotional state through a pre-trained deep neural network model. The system comprises a multispectral image acquisition module, a layered optical modeling module, a reflection component separation module, a physiological parameter inversion module and a health state evaluation module. According to the technical scheme, the signal-to-noise ratio and stability of physiological signal extraction in a complex illumination environment can be remarkably improved, the adaptability to individuals with different skin colors and dynamic illumination conditions is enhanced, and more accurate and more robust judgment of the high-order health state is achieved.

The invention relates to the technical field of intelligent detection, in particular to a feed mycotoxin detection method and system based on spectral analysis. The method comprises the following steps: acquiring a near-infrared diffuse reflection spectrum of a feed sample to be detected, constructing an original spectrum vector based on absorbance data of the near-infrared diffuse reflection spectrum, and determining a projection component of the original spectrum vector on a pre-constructed qualified matrix space; subtracting the projection component from the original spectrum vector to obtain a residual vector, and calculating a first-order difference spectrum of the residual vector based on a preset sensitivity weight; and performing local feature weighting on the first-order difference spectrum to determine a weighted feature value, determining a residual entropy value of the residual vector and a range value of the residual vector, and determining a detection result of the to-be-detected feed sample by using the weighted feature value, the residual entropy value and the range value. According to the technical scheme, a more accurate detection result of the mycotoxin of the feed can be obtained.

The application relates to the technical field of image processing, and provides a model material replacement method and device for a design drawing. The method comprises the following steps: determining a target model from each model of a design drawing according to a received material selection instruction; obtaining a target material map corresponding to the material selection instruction from each material map of the target model; and merging the target material map, a light map, a diffuse reflection map and a reflection refraction map of the design drawing to obtain a model image of the target model in the design drawing; wherein the design drawing is an image obtained through rendering; the light map, the diffuse reflection map and the reflection refraction map are each layer obtained after the design drawing is rendered. The model material replacement method for the design drawing provided by the application can reduce the calculation amount of the model in the design drawing when the material is replaced, and reduce the resources consumed when the model material is replaced.

The invention discloses a new energy station multi-mode security threat detection and active defense method and system, and relates to the technical field of new energy station security monitoring and intelligent protection, and the method comprises the following steps: constructing a brightness and texture cross-time scale joint observation baseline, extracting a hot spot track and boundary definition curve, and obtaining a new energy station multi-mode security threat detection and active defense model; generating a time anchor point set reflecting the illumination change rate; and performing frame-by-frame optical decomposition based on the time anchor point set, separating a specular reflection component from a diffuse reflection component, extracting a brightness mutation position, calibrating a pseudo peak seed region, and constructing an illumination behavior template. According to the invention, through constructing a time anchor point and an illumination behavior template, accurate identification of illumination disturbance is realized, a false alarm window is compressed in combination with multi-modal verification, a sampling rhythm is reconstructed, pseudo peak energy is adaptively suppressed, the credibility of a target signal is enhanced, and a closed-loop control flow from identification to response is formed. And safe and stable operation of the new energy station in a dynamic environment is effectively ensured.

This application relates to an image denoising method and apparatus, a computer device, and a storage medium. Techniques described herein denoise an image by acquiring a current diffuse reflection image and a current specular reflection image, acquiring a historical diffuse reflection image, and denoising the current diffuse reflection image using the historical diffuse reflection image, to obtain a target diffuse reflection image, acquiring a historical specular reflection image, and denoising the current specular reflection image using the historical specular reflection image, to obtain a target specular reflection image, and fusing the target diffuse reflection image and the target specular reflection image, to obtain a target image.

An anti-dazzle anti-interference display touch screen and terminal equipment, comprising a display screen, a sensing surface of the display screen is bonded with a touch module, and a part of the touch module is covered with an electromagnetic shielding layer to ensure the integrity of a display signal of the display touch screen and prevent external interference; the touch module comprises a functional piece and a cover plate which are bonded with each other, at least one side of the cover plate is provided with an anti-dazzle structure, and a rough structure of the anti-dazzle structure can convert direct light into diffuse reflection, so that dazzle of the display touch screen is reduced, visibility is improved, and durability is enhanced.

An apparatus for intraoperative nerve identification and / or visualization of a target of interest of a living subject comprises a light source; an imaging head configured to acquire a polarized diffuse reflectance spectral image from the illuminated target of interest; and a controller configured to control the imaging head and to process the acquired polarized diffuse reflectance spectral image.

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 application discloses an auxiliary device for field tobacco leaf image collection and measurement, which comprises a bottom plate composed of a folding frame and a bottom cloth, the bottom cloth is covered on the folding frame, and a scale line is arranged on the edge of the bottom cloth; side plates comprising left and right side plates, the left and right side plates are covered with side cloth, the bottom edges of the left and right side plates are detachably connected with the folding frame, and the top and bottom of the left and right side plates near the lower edge of the bottom cloth are respectively provided with fixing rings; a fixing belt assembly comprising a neck fixing belt and a waist fixing belt, the two ends of the neck fixing belt are connected with the fixing rings on the top of the left and right side plates, and the two ends of the waist fixing belt are connected with the fixing rings on the bottom of the left and right side plates. The application does not need the cooperation of others, and the field work efficiency is improved; the light gray diffuse reflection bottom cloth and the side cloth can isolate stray light and background sundries, and the image recognition precision is improved; the scale design realizes real-time measurement of leaf size, and simplifies the data collection process; and the folding structure and the fixing belt winding design are convenient for carrying.

The invention discloses an assembly type wind power tower tube structure and method, and particularly relates to the technical field of wind power towers, a connecting plate is arranged between two circumferentially adjacent corrugated tower plates, a connecting assembly is arranged between two vertically adjacent corrugated tower plates, and a positioning mechanism is arranged on the connecting plate. The positioning mechanism comprises a laser transmitter arranged at the topmost end of the connecting plate, a diffuse reflection plate is arranged on the connecting assembly, and the transmitting end of the laser transmitter faces the corresponding diffuse reflection plate. According to the invention, by arranging the corrugated tower plate with the longitudinal section in the shape of the isosceles trapezoid with the wide lower part and the narrow upper part, the thickness of the corrugated tower plate is gradually thinned from bottom to top, so that the thickness of the whole plate of the tower drum is gradually thinned from bottom to top, and the problems of stress concentration and high gravity center of the middle-upper section of the tower drum are avoided; the overall wind resistance of the tower drum is effectively improved, and the gravity center height of the tower drum is remarkably reduced.

The application belongs to the field of wireless communication and perception, and particularly relates to an environment map construction method for an arbitrary continuous irregular rough diffuse reflection scene. The application comprises: modeling a receiving end receiving signal with a continuous rough diffuse reflection probability model; using a two-dimensional off-network sparse Bayesian algorithm to extract channel parameter information from the receiving signal; perceiving the state of scattering points by using parameter information extracted from different observations; fusing the perceived scattering point information of multiple users and multiple base stations, performing data cleaning and clustering, and realizing perception of an arbitrary shape unknown environment including irregular scattering surfaces; and constructing a high-precision physical map by using a rotating polynomial fitting method. The application can greatly reduce the cost of environment map construction and prevent privacy leakage; can be applied to any unknown shape physical scattering scene, and can effectively extract and fuse a higher order of magnitude of environmental parameter state observations.

The utility model discloses transparent conductive glass and a perovskite thin film battery assembly. The transparent conductive glass comprises a transparent substrate, the transparent substrate is provided with a first surface and a second surface which are opposite, and a first direction and a second direction which are perpendicular to each other, a plurality of grooves extending in the second direction are formed in the second surface in parallel, and diffuse reflection patterns are arranged at the bottoms of the grooves; and the transparent conducting layer is stacked on the non-groove area on the second surface and stacked on the bottom and at least one side wall of the groove so as to form a continuous or discontinuous transparent conducting layer structure in the first direction. When the transparent conductive glass disclosed by the utility model is used for manufacturing a perovskite thin film battery assembly, the laser scribing passes can be obviously reduced, so that the process is simplified, and the ablation damage to the perovskite thin film battery caused by multiple laser scribing is avoided, thereby reducing the dead zone area; the stability and the power generation efficiency of the assembly are improved; and the service life of the assembly is prolonged.

The present invention relates to a secondary battery module frame, and provides a secondary battery module frame including: a main body having an accommodating space formed therein; and a plurality of exposure holes penetrating one side of the main body to expose the accommodating space, wherein the exposure holes each have a non-light-emitting portion formed along a periphery of an inner surface of the exposure hole to diffusely reflect light incident on the inner surface of the exposure hole.

TITLE: Calibration Target for Optical Sensor This disclosure relates to a calibration target (1) comprising a face (10) having a first zone (11) and a second zone (12), the first zone (11) being defined by a pattern configured to be detectable by a camera (2), the first zone having a reflectivity factor of at least 94% for which at least 90% of the reflection is diffuse, the second zone having an emissivity factor of at least 50% for an emission wavelength range between 2 and 12 µm. Figure 1

The application provides a material surface diffuse reflectivity measuring method and device, and belongs to the technical field of material reflectivity testing.The device comprises an integrating sphere, an integrating sphere inner wall coating backfill module, a measured material backfill module, a light trap and a luxmeter.The integrating sphere comprises a light inlet and another opening.Illumination light is incident from the light inlet of the integrating sphere.The light receiving areas of the integrating sphere inner wall coating backfill module, the measured material backfill module and the light trap are matched with the other opening.The luxmeter is arranged on the inner wall of the integrating sphere, and the position of the luxmeter is away from the positions of the light inlet and the other opening.The material surface diffuse reflectivity is measured by using the integrating sphere, the light trap and other tools through a direct measurement method, without the aid of a standard reflector plate which needs to be calibrated in advance for diffuse reflectivity.Meanwhile, parameters such as the diffuse reflectivity of the inner wall of the integrating sphere and the brightness value of the illumination light source do not need to be measured.

The application discloses a multi-view human body reconstruction method based on photometric consistency matching and optimization algorithm, which comprises the following steps: firstly, obtaining a rough human body surface through a visual hull algorithm according to a human body mask image; secondly, using photometric consistency constraint to optimize the shape initialized from the visual hull, so as to obtain a dense human body surface model; thirdly, calculating an illumination coefficient by using the diffuse reflection principle; and finally, using a light and shade optimization algorithm to perform high-speed real-time rendering on the dense human body surface model, so as to obtain a final simulation human body model. The application can optimize the initialized rough surface by using the contrast of the gray scale image, maintaining the photometric consistency constraint and the differentiable rendering, and can effectively solve the problems of the unsmooth surface, the unobvious geometric details and the color estimation by using the diffuse reflection principle to estimate the diffuse reflectivity and the illumination. The application can optimize the human body surface by the difference of the light and shade and the color in the image.

The invention discloses a photovoltaic panel with a double-sided photovoltaic module positioning structure, and belongs to the technical field of photovoltaic modules. And a reflector. According to the photovoltaic panel with the double-sided photovoltaic module positioning structure, back incident light is subjected to high diffuse reflection through the reflector, front direct light and back reflected light can be utilized to the maximum extent, the generating capacity of a unit area is remarkably improved, meanwhile, airflow can be guided, forced convection is formed on the back of the module, the working temperature of the photovoltaic panel main body is effectively reduced, and the service life of the photovoltaic panel main body is prolonged. The photovoltaic panel main body is adjusted to be in a vertical state through the use of the turnover mechanism, the array can be controlled to rotate after the photovoltaic panel main body is polluted by sand dust, accumulated snow or bird droppings, and at the moment, attachments naturally slide down under the action of gravity due to the huge dip angle change, so that the manual cleaning cost and water consumption are greatly reduced, and meanwhile, the cleaning efficiency is greatly improved. And after continuous rotation, the back surface of the photovoltaic panel main body faces upwards, so that simple cleaning of the back surface is realized.

A portable optical spectroscopy system may provide noninvasive imaging of human tissue. The system may comprise a multi-wavelength near-infrared emitter source including at least one multi-chip light source configured to sequentially emit light at multiple wavelengths. A local controller may be configured to control a light emission sequence at two or more wavelengths. A sensor may be aligned in reflectance geometry with the emitter sources and configured to detect diffusely reflected near infrared light from biological tissue. A remote processor may be configured to reconstruct two-dimensional images of tissue optical properties in real time. Sequential NIR illumination from at least one source may be aligned with the sensor detector. The multi-wavelength near-infrared emitter source may comprise wavelengths selected from 670 nm, 810 nm, and 950 nm corresponding to absorption characteristics of deoxyhemoglobin, oxyhemoglobin, water, and fat. The system may generate cross-sectional images displaying spatial distribution of tissue constituents.

The utility model discloses a photovoltaic assembly with reflective bus bars, which belongs to the field of photovoltaic technology and comprises a plurality of bus bars and a plurality of battery pieces, and the plurality of bus bars and the battery pieces are electrically connected with each other and packaged between a front cover plate and a rear cover plate. The light receiving surface of the bus bar is coated with an adhesive, the surface of the adhesive is uneven, and a plurality of reflective metal particles are fixedly connected through the adhesive. According to the utility model, the light-receiving surface of the bus bar is coated with the adhesive and fixedly connected with the reflective metal particles to form the concave-convex reflective structure, so that compared with the existing embossed V-shaped groove scheme, the bus bar has the advantages that the conductive sectional area is prevented from being damaged by embossing, and the current-carrying capability is ensured; thick adhesive film filling is not needed, and the packaging cost is reduced; the concave-convex structure is combined with the reflective particles through the adhesive, thereby enhancing the diffuse reflection of sunlight, improving the light receiving ratio of the cell, improving the power of the assembly, and avoiding the risk of assembly failure caused by the direct contact between the bus bar and the glass.