41 results about "Laser holography" patented technology

The invention provides a fire extinguisher tank bursting pressure prediction method and system. According to the method, a micro-deformation sequential sequence and a pressure gradient value of the surface of the fire extinguisher tank body under high pressure are collected, and a deformation displacement field matrix is generated through optical flow analysis so as to quantify the deformation rate; a laser holographic interferometer is deployed on a pressurization test bench, laser phase parameters are dynamically adjusted based on the deformation rate, matched holographic interference fringes are output, and a deformation evolution topological graph is constructed through fringe phase changes; identifying a deformation rate abnormal fluctuation mode in the topological graph, and associating the pressure gradient value to generate a deformation pressure association tensor; acquiring a deformation propagation path and a stress concentration trend based on the tensor, and simulating a critical fracture pressure value and a potential fracture position; and integrating results to form bursting pressure risk output. According to the invention, millisecond-level accurate prediction of the submillimeter-level fracture position is realized, the burst pressure risk assessment precision is improved, and the test cost is reduced.

The invention relates to the technical field of laser holographic image generation, in particular to a thin film hologram generation method and device, and the system comprises the steps: S1, thin film pretreatment; s2, coating operation and continuity detection are carried out; s3, analyzing the mass ratio of the coating film; s4, checking the hologram image; s5, adjusting coating quality detection parameters; the method comprises the following steps: performing surface pretreatment on a film, performing coating operation, performing continuity detection on a film coating liquid, performing mass ratio analysis when a detection result is a local discontinuous category, and performing corresponding re-coating measures; and after illumination treatment, carrying out quality inspection on a hologram on the thin film through an image recognition technology, and adjusting related parameters based on quality fluctuation occurring in the coating process so as to ensure that a final product meets the quality standard. According to the invention, a high-efficiency and stable coating technology is adopted, the production efficiency is improved while the film quality is ensured, and the device has the production capacity of being widely applied to anti-counterfeit labels, trademarks and self-defined stickers.

The invention relates to the technical field of image processing, and discloses a laser holographic aberration compensation system and method based on deep learning, and the system comprises a first module which determines a phase-to-gray lookup table; the second module is used for calculating to obtain stacking strength; the third module is used for obtaining a Zernike polynomial coefficient through a convolutional neural network regression device; the fourth module is used for calculating to obtain predicted intensity and an aberration estimator; the fifth module is used for outputting two grey-scale maps; and the sixth module outputs two phase diagrams. According to the method, self-supervised training data is constructed through three-plane intensity collection, and an angular spectrum method physical model and Zernike polynomial coefficient low-dimensional representation are combined, so that a convolutional neural network regression device can stably learn aberration mapping, and compensation precision and generalization ability are both considered; double-phase two-frame time division coding is adopted, the output characteristics of a phase type spatial light modulator can be adapted, and cooperative control of aberration compensation and target complex field reproduction is achieved.

The invention provides a laser holographic anti-counterfeiting film makeup method for optimizing seam precision, which comprises the following steps: acquiring light wave phase distribution data of a seam area through a preset optical simulation model, and calculating light wave phase difference of adjacent holographic image edges by adopting a fast Fourier transform algorithm to obtain spatial distribution coordinates of phase discontinuous points; extracting optical characteristic parameters of a seam area from the optimized phase distribution data, and simulating a propagation path of light waves in the seam area by adopting a finite element analysis method to obtain boundary conditions of smooth transition of the light waves; and manufacturing parameters of a seam area are extracted from the final microstructure template data, a holographic pattern of the seam area is generated through light wave phase modulation and pixel dot matrix density control by adopting a laser direct writing technology, and the holographic anti-counterfeiting film makeup with optical fracture suppression is obtained. By accurately controlling phase distribution and bright spot design of the seam area, continuous transition of light waves and visual seamless connection are achieved.

The invention provides a tool parameter dynamic matching method and device based on deep learning, and relates to the field of data processing. The method comprises the following steps: acquiring laser holographic imaging data and three-dimensional contour scanning data of a machine tool cutting area at a target timestamp; according to the laser holographic imaging data and the three-dimensional contour scanning data, holographic voxel data and cutting point cloud data are determined; inputting the holographic voxel data and the clipping point cloud data into a four-dimensional grid containing a target timestamp to obtain a four-dimensional snapshot sequence; acquiring a first cutter parameter of the machine tool cutter at the target timestamp; and inputting the four-dimensional snapshot sequence and the first cutter parameter into a preset deep learning causal hypernet to generate a second cutter parameter. By implementing the technical scheme provided by the invention, the cutter parameters can be dynamically matched during machining of the numerical control machine tool.

The invention relates to the technical field of street lamp advertisement power supply, and discloses a laser holographic street lamp advertisement system coupled with natural energy and a cooperative control method thereof, and the system comprises a natural energy collection module which collects solar energy and wind energy and outputs DC electric energy; the energy management module outputs power supply voltage and monitors the charge state; the laser holographic projection module generates a laser light source and modulates the laser light source to form a holographic image; the central control module is used for generating advertisement content data, driving the spatial light modulator, adjusting the power of the laser light source based on the environment illumination intensity and adjusting the projection angle of the holographic image based on the pedestrian moving track; and when the charge state is greater than a threshold value, executing full-power advertisement playing, otherwise, switching to low-power-consumption advertisement fragment playing. According to the invention, stable power supply for laser holographic advertisement display can be realized by using natural energy, the laser power and the projection angle are adjusted through environmental perception, the visibility and attraction in a complex environment are improved, basic operation is ensured when the energy is insufficient, and the advertisement propagation requirement is met.

The invention discloses a non-contact measuring head device and a measuring method for a nanometer coordinate measuring machine, and the measuring head device comprises a laser holographic measuring module, an optical microscopic imaging module and a signal processing module. The laser holographic measurement module comprises a semiconductor laser, a straight stripe grating close to the semiconductor laser, a holographic grating far away from the semiconductor laser, a first photoelectric detector, a second photoelectric detector, a first lens, a second lens, a first spectroscope and a microscope objective, wherein the first photoelectric detector and the second photoelectric detector are located on the left side and the right side of the semiconductor laser respectively. The signal processing module calculates out-of-focus error signals according to the electric signals obtained by the laser holography measurement module, calculates out-of-focus amount of each measurement point on the surface of the sample according to the linear relation between the out-of-focus amount of the surface of the measured sample leaving the focal plane of the microscope objective and the out-of-focus error signals, and calculates out-of-focus amount of each measurement point on the surface of the sample according to coordinate values of the nanometer coordinate measurement machine. And obtaining the coordinate value of each measuring point on the surface of the sample. According to the invention, the aiming resolution can be improved, and high-precision and high-resolution three-dimensional measurement is realized.

The invention relates to the field of building decoration materials, in particular to a preparation method of bionic intelligent wood grain glass. The preparation method of the bionic intelligent wood grain glass comprises the following steps: step 1, substrate nanocrystallization treatment: performing a chemical frosting process on a substrate to form a pit array; 2, laser holographic plate making, wherein femtosecond laser engraving is adopted, and a microstructure of the growth wheel is generated; step 3, quantum dot dyeing: loading a photochromic quantum dot array to realize a fluorescence effect excited by ultraviolet light; 4, micro-capsule implantation, wherein temperature-sensitive composite fibers containing lignin are implanted, and temperature response is achieved; step 5, bionic self-assembly: preparing a fiber inner core and a lignin composite sheath layer through an electrostatic spinning technology; and 6, intelligent curing: grafting an acrylate temperature-sensitive polymer to obtain the bionic intelligent wood grain glass. According to the invention, a four-dimensional bionic technology is adopted, and a multi-sensory bionic effect is realized by combining 3D morphology, dynamic optics, temperature-sensitive touch and smell simulation.

The utility model relates to anti -fake label technical field especially relates to laser holographic dynamic angle anti -fake label structure, including having first anti -fake label and two -dimensional code scanning area, is equipped with two -dimensional code scanning area on first anti -fake label, still including connecting plate and tear -off plate, first anti -fake label is fixedly connected with connecting plate, is equipped with tear -off plate on connecting plate, both groups of tooth grooves are equipped on connecting plate and tear -off plate. Two -dimensional code scanning area is shielded through tear -off plate, can avoid damaging due to friction or scraping when transporting, guarantees two -dimensional code to keep intact, ensures the anti -fake function.

This invention relates to a 3D anti-counterfeiting paper printing transfer method using a microlens array, belonging to the field of anti-counterfeiting in paper (cigarette) box packaging. This invention applies microlens anti-counterfeiting technology to cigarette packaging through a paper printing transfer process to obtain anti-counterfeiting patterns with strong spatial three-dimensionality and environmental friendliness. This invention transfers a high-resolution microlens array to the surface of the packaging paper, overcoming the pollution problems caused by the non-degradability of PET; furthermore, by replacing the existing laser holographic information layer with a film layer engraved with the microlens array, this invention can deflect incident light, acting as an optical lens to image the base pattern, achieving a floating or sinking three-dimensional effect, resulting in a more three-dimensional image.

The present invention discloses a laser holographic anti-counterfeiting clothing hangtag and a preparation method thereof, comprising a hangtag main body and an information area arranged on the front surface of the hangtag main body, an anti-counterfeiting scratch layer being arranged on the front surface of the hangtag main body relative to the lower part of the information area, a hanging hole being penetrated through the top of the hangtag main body, an anti-tearing structure being installed on the top of the hangtag main body, the anti-tearing structure comprising a protective rubber cover and a plug sleeve, the protective rubber cover and the plug sleeve being an integrated structure, the plug sleeve being inserted into the hanging hole, and a strip hole being penetrated through the plug sleeve, and a mounting structure being arranged between the protective rubber cover and the hangtag main body; the present invention improves and optimizes the laser holographic anti-counterfeiting clothing hangtag in the prior art, and designs an anti-tearing structure on the top of the hangtag, which can effectively protect the hanging hole, prevent the problem of the hanging hole being torn due to the accidental pulling of the hanging rope during transportation, and improve the stability of the hangtag.

The invention provides a laser holographic processing device, which comprises a spatial light modulator arranged in a laser light path and used for modulating a laser beam to form a first modulated beam; the modulation element is arranged in a propagation path of the first modulation light beam, the modulation element comprises a substrate and a taper hole formed in the substrate, and the radius and the depth of the taper hole are in a primary curve, quadratic curve or high-order nonlinear curve relation; and the multi-degree-of-freedom bearing platform is used for bearing the modulation element and driving the modulation element to translate and / or rotate in multiple directions. According to the laser holographic processing device provided by the invention, after the quality of a laser beam is optimized through the spatial light modulator, the conical hole is modulated at different positions and postures, and the durability and the function integration characteristic are effectively considered.

The invention relates to a method for texturing the surface of a solar cell silicon wafer by laser holography, which relates to the technical field of laser holography texturing and comprises the following steps: S1, building a laser holography system and setting parameters; s2, silicon wafer pretreatment; s3, a laser holographic texturing process; and S4, post-processing and detecting. According to the method for texturing the surface of the solar cell silicon wafer through the laser holography, the light reflectivity of the surface of the silicon wafer is effectively reduced by accurately controlling the formation of the micro-nano structure, specifically, the reflectivity of the silicon wafer in the visible light wave band of 400-700 nm is stably controlled between 8% and 12% through the micro-nano structure formed through the method, the reflectivity is reduced by 3%-5% compared with the reflectivity of a traditional chemical texturing method, and the quality of the surface of the solar cell silicon wafer is improved. Due to the reduction of the reflectivity, more incident light can enter the silicon wafer, the optical path is prolonged, and the number of photon-generated carriers is obviously increased, so that the short-circuit current density and the photoelectric conversion efficiency of the cell are improved, and high uniformity and high consistency of a micro-nano structure are realized by accurately controlling laser parameters and interference conditions.

The present application relates to laser holographic anti-counterfeiting technical field, specifically is a kind of high adhesion deep groove lens transfer card paper production equipment and its production process.Production equipment includes winding roller, two mirror image symmetrical supports are arranged in the side of winding roller;Guide roller is rotatably arranged between the two supports in horizontal state, and guide roller is used to support and guide deep groove lens UV mould pressing film conveying;Deep groove lens UV mould pressing film is connected with winding roller after passing guide roller along winding direction;One of the supports is provided with rotatable cam, and the regularity action of deep groove lens UV mould pressing film is formed by the structural characteristics of cam in the process of rotation, to adjust the winding state of deep groove lens UV mould pressing film.The regularity action in the process of cam rotation can be targeted to adjust the winding state of deep groove lens UV mould pressing film, effectively improve the possible wrinkle problem in winding process, improve the winding quality of high adhesion deep groove lens transfer card paper in UV mould pressing process.

The utility model discloses a multi-layer variable anti-counterfeit label. The multi-layer variable anti-counterfeit label comprises a label base layer, a positioning net layer is fixedly arranged on the lower surface of the label base layer, a waterproof bottom layer is fixedly arranged on the lower surface of the positioning net layer, an adhesive layer is fixedly arranged on the lower surface of the waterproof bottom layer, and a release layer is arranged on the lower surface of the adhesive layer. A laser holographic anti-counterfeiting layer is fixedly arranged on the upper surface of the label base layer, and a transparent wear-resistant surface layer is fixedly arranged on the upper surface of the laser holographic anti-counterfeiting layer; a storage groove is formed in a local position of the upper surface of the label base layer, a magnet sheet is fixedly arranged in the storage groove, a positioning iron rod is arranged on the upper surface of the magnet sheet, a photosensitive color-changing anti-counterfeiting layer is fixedly arranged on the outer surface of the positioning iron rod, and a transparent protective cover is arranged above the photosensitive color-changing anti-counterfeiting layer in a sleeving manner. According to the technical scheme, the structural design is reasonable, the anti-counterfeiting effect is good, copying is not prone to occurring, secondary use cannot be achieved, and practicability is good.

The invention provides a laser holographic anti-counterfeiting film, a precise micro-concave die and a manufacturing process, and relates to the technical field of anti-counterfeiting films. The laser holographic anti-counterfeiting film comprises a first pattern structure unit in the laser holographic anti-counterfeiting film, the first pattern structure unit comprises at least one concave pattern structure, at least one convex pattern structure and a zero-order diffraction grating structure, the edge of the concave pattern structure is connected with the at least one convex pattern structure, and the top surface of the convex pattern structure is an inclined surface; according to the scheme, zero-order diffraction, color, dynamic light and shadow and three-dimensional embossment can be integrated on one anti-counterfeiting film, the optical effect of the anti-counterfeiting film is further enriched, and the safety level of the anti-counterfeiting film is improved.

The present invention belongs to the field of anti-counterfeiting packaging printing-related equipment and discloses a multifunctional plate shaft capable of both register printing and embossing holographic special plate patterns. The plate shaft comprises, in sequence along the axial direction, a first plate shaft area, a first groove, a second plate shaft area, a second groove, and a third plate shaft area. The first plate shaft area is provided with an initial mark for register detection around the plate, and during operation, it is used to penetrate the ink tank and perform scraper printing. The first groove has a first inward groove depth. Straight lines for aligning the initial mark are provided on the outer sides of the second and third plate shaft areas, respectively. The second groove has a second inward groove depth and is used to adhere the laser holographic plate. Through the present invention, register recognition can be performed more accurately while simultaneously embossing and replicating the holographic special plate pattern in a compact and easily operable manner, effectively solving the problems of large secondary register fluctuations and low yield in the prior art.

The invention relates to the technical field of laser holographic image manufacturing equipment, in particular to cross-linked film 3D nano-image laser holographic image equipment which comprises an unwinding assembly, a 3D nano-image laser holographic image processing assembly, a 3D nano-image processing assembly and a 3D nano-image processing assembly which are sequentially arranged in the conveying direction of a cross-linked film, the printing assembly is used for printing an alignment cursor on the film material; the overprinting alignment assembly is used for achieving closed-loop overprinting alignment based on cursor recognition and impressing plate roller phase detection, and the overprinting alignment assembly comprises a first photoelectric eye and a second photoelectric eye which are used for recognizing and detecting the position of an alignment cursor and detecting a phase signal of an impressing plate roller correspondingly; cursor printing, cursor detection, plate roller phase detection and closed-loop alignment compensation are integrated on the same assembly line and connected through the integrated rack, accumulative errors caused by traditional multi-process transfer are eliminated, and deep fusion of high-precision overprinting and continuous production is achieved. A colored alignment cursor and a plate roller phase mark are detected respectively by arranging a special first photoelectric eye and a special second photoelectric eye.

The invention discloses an anti-counterfeiting packaging box printing device based on a laser holography technology and a printing system of the anti-counterfeiting packaging box printing device, relates to the technical field of anti-counterfeiting printing, and aims to solve the technical problems that in a traditional printing technology, anti-counterfeiting marks are prone to being simulated, and authenticity is difficult to distinguish accurately. The image acquisition module is used for acquiring anti-counterfeiting packaging box template image information and real image information and transmitting the information to the laser holography generation module and the image recognition module; the laser hologram generation module is used for generating a hologram based on the template image information provided by the image acquisition module and transmitting the hologram to the image recognition module; and the image recognition module is used for acquiring the hologram generated by the laser hologram generation module and the real image provided by the image acquisition module, determining a to-be-optimized area of the real image by calculating a matching matrix of the hologram and the real image, and transmitting the information to the image optimization module. The anti-counterfeiting packaging box printing device has the advantage that the printing precision of the anti-counterfeiting packaging box is improved.

The invention discloses a deep-sea digital laser holographic imaging system and imaging method, and belongs to the technical field of deep-sea target detection equipment, the deep-sea digital laser holographic imaging system comprises a light source cabin and an imaging cabin, optical window end covers are arranged at the ends, close to each other, of the light source cabin and the imaging cabin, and coaxial optical windows are arranged on the two optical window end covers; a cage type light path supporting structure with one end connected with an optical window end cover is arranged in the light source cabin, a laser lighting system is arranged on the cage type light path supporting structure, a circuit board fixing piece is arranged in the imaging cabin, a camera coaxial with the optical window is arranged at one end of the circuit board fixing piece, and a circuit board is arranged at the other end of the circuit board fixing piece. The ends, away from the optical window end cover, of the light source cabin and the imaging cabin are provided with rear end covers, and the rear end covers are provided with watertight cable interfaces. The device has excellent pressure resistance and sealing performance, the overall structure is compact, stability is good, multiple functions are integrated, optical adaptability is good, and high-quality holographic recording and digital reconstruction of a target object in a deep sea complex environment are achieved.

This invention relates to the field of laser holographic image manufacturing technology, and particularly to a process and method for preparing 3D nano-image laser holographic images using cross-linked films, comprising the following steps: unwinding; printing alignment marks; printing binder and overprinting alignment; printing a UV imaging layer and curing; and rewinding. This application achieves high-precision overprinting alignment on transparent films. By pre-printing colored alignment marks on the surface of the cross-linked film, the difficult-to-identify transparent film is transformed into an identifiable material with a clear visual reference. A method of real-time comparison between the mark signal and the printing plate phase signal is used to perform dynamic overprinting alignment while printing the binder. The printing plate speed is adjusted in real time according to the deviation, achieving parallel and coordinated control of binder printing and overprinting alignment. This ensures that the printing position of the binder layer always dynamically coincides with the mark reference, solving the problem of difficult signal acquisition on transparent films and improving overprinting accuracy.

This invention discloses a partitioned multi-period picometer comb and its manufacturing method. The picometer comb is prepared in partitions, with different differences in the average period and the width of adjacent grating lines in different regions. The manufacturing method of the partitioned multi-period picometer comb employs a double exposure method using laser holography, including the following steps: Step S1: Constructing a holographic interference light field, which first splits a beam of light emitted from the light source into two beams, which are then illuminated at the same position on the exposure plane by two mirrors and an objective lens, respectively; Step S2: Adjusting the grating clamping fixture of the grating substrate using the grating substrate exposure adjustment module, selecting a portion of the grating substrate for double exposure to prepare the picometer comb in that region; Step S3: Repeating step S2 to prepare the picometer comb in other regions of the grating substrate; Step S4: Obtaining the partitioned multi-period picometer comb by developing, fixing, and drying the grating substrate obtained in step S3.

The utility model provides a packing box with a laser holographic image display function, which comprises a box body integrally folded and formed, a display device is arranged on one side of the box body, the display device comprises a display shell, a window is arranged on one side of the display shell, a laser holographic image is arranged inside the other side of the display shell, and the display shell is provided with a display screen. A lighting device is slidably arranged on the inner side of the top of the display shell. According to the laser holographic image display box, the box body is formed at a time through paper, the structure is simple, assembling and forming are convenient, the manufacturing cost is low, the box body is swung leftwards and rightwards, so that the lighting device moves relative to the laser holographic image, the laser holographic image has a dynamic display effect, and the ornamental value of the box can be effectively provided.

The invention discloses a combined type three-dimensional roughness measuring device and method. The device comprises an X-axis, Y-axis and Z-axis linear axis motion system, an X-direction, Y-direction and Z-direction three-degree-of-freedom adjusting system, a measuring frame, a laser holographic measuring head, an X-direction, Y-direction and Z-direction laser length measuring system, a contact type measuring head and a room corner reflector. A to-be-measured workpiece is placed on the room corner reflector, the laser holographic measuring head is aligned with the upper surface of the room corner reflector and used for aiming at the measurement position of the workpiece, the contact type measuring head is used for conducting data collection on the measurement position in a contact mode, and the X-direction, Y-direction and Z-direction laser length measuring system is used for conducting data collection on the measurement position in a non-contact mode; the measuring frame is connected with the Z-axis linear axis motion system, the corner reflector is connected with the X-axis linear axis motion system, and the position of a workpiece to be measured can be adjusted through the X-axis linear axis motion system and the Y-axis linear axis motion system. The device can combine the advantages of contact measurement and non-contact measurement, and has the characteristics of large measurement range and high precision.

The invention provides a CAVE system immersive Kunqu experience method and system based on multi-modal interaction, and the method comprises the steps: adjusting CAVE projection space parameters based on a visual editing interface, and synchronously updating a motion capture mapping rule; a role holographic image is projected through laser holographic equipment, and meanwhile, a dynamic background is generated by using a DLP projector; the method comprises the following steps: capturing space action data of a user through an infrared camera, collecting gesture electromyographic signals of the user through an electromyographic sensor, analyzing text data of music sung by the user through voice recognition equipment, and monitoring physiological state data of the user through a heart rate sensor; generating a virtual scene special effect through a motion capture mapping rule, and driving light and shadow hue adjustment and environment parameter adjustment; and activating the branch plot through the AI decision tree algorithm, and calling the associated content of the cultural knowledge graph, so that the real-time interaction between the natural action of the user and the projection content can be realized, the physiological immersion of the user can be enhanced, the personalized experience of the user is supported, and the interactivity is improved.

The invention discloses a laser holographic dynamic anti-counterfeiting information generation method applied to product packaging, which comprises the following steps of: constructing an anti-counterfeiting primitive model library capable of dynamically deforming based on a packaging three-dimensional structure, and combining multi-scale decomposition and mechanical-optical coupling to ensure that information is complete during deformation; a chaotic encryption engine is constructed by using a three-dimensional Lorentz attractor and a quantum walking algorithm, a high-randomness key stream is generated to perform dual modulation on primitive parameters, and a packaging curved surface is matched through conformal transformation; a holographic interference field is constructed by adopting a dual-wavelength interference framework and dynamic light path compensation, and a laminated holographic structure is formed; through precise control and predictive compensation of laser energy, a micro-nano structure with gradient refractive index distribution is recorded on the surface of a package, and a dynamic visual effect is presented. And meanwhile, multi-dimensional verification mechanisms such as fluorescence red shift response and moire fringe detection are integrated, and dynamic updating of the primitive model library is realized by relying on a block chain and federated learning.

The application provides a kind of tool parameter dynamic matching method and device based on deep learning, it is related to data processing field.In the method, laser holographic imaging data and three-dimensional profile scanning data for machine tool cutting area at target timestamp are obtained;According to laser holographic imaging data and three-dimensional profile scanning data, holographic voxel data and trimmed point cloud data are determined;Holographic voxel data and trimmed point cloud data are input into four-dimensional grid containing target timestamp, to obtain four-dimensional snapshot sequence;First tool parameter of machine tool tool at target timestamp is obtained;Four-dimensional snapshot sequence and first tool parameter are input into preset deep learning causal super network, to generate second tool parameter.Implementation of the technical solution provided in the application facilitates dynamic matching of tool parameters during CNC machine tool processing.

The invention discloses an aviation gear panorama detection method based on laser holographic interference, and is applied to the field of aviation precision part detection. At present, traditional contact detection is low in efficiency, a precise coating on the surface of a gear is easily scratched by mechanical contact, and hidden areas such as a tooth root fillet and an inner wall of a shaft hole cannot be detected. The method comprises the steps of positioning and preprocessing a to-be-detected aviation gear, fixing the to-be-detected aviation gear on a multi-degree-of-freedom workbench through a flexible centering clamp, debugging a laser holographic system and setting parameters, starting an annular laser unit composed of a plurality of laser emission modules, and performing panoramic holographic scanning on the aviation gear. Starting a rotation function of a multi-degree-of-freedom workbench, processing holographic data, extracting multi-dimensional information, transmitting interference fringe data to a data processing system, verifying and outputting a detection result, performing cross verification on surface defects and internal stress data, and eliminating data misjudgment.

The invention relates to the technical field of laser holography anti-counterfeiting printing, in particular to an anti-counterfeiting bill printing system based on the laser holography technology, a tension fluctuation detection unit collects tension data of a base material in real time through a plurality of sensors, and a microprocessor of a control unit combines the elasticity modulus of the base material and the tension fluctuation frequency to control the anti-counterfeiting bill printing system based on the laser holography technology. Accurately calculating a grating spacing compensation value through a grating coupling compensation algorithm and a deformation lag correction factor; the diffraction angle compensation unit adopts dual-channel cooperative control, the first channel adjusts the pressure of a compression roller through force-position hybrid control and displacement redundancy check, and the second channel corrects the laser irradiation angle by means of a two-dimensional rotating platform and an angle dynamic pre-compensation mechanism; and model parameters are optimized through diffraction consistency verification and a neural network self-learning module, the influence of base material deformation caused by tension fluctuation is continuously counteracted, the consistency of holographic grating distances and the stability of diffraction angles are guaranteed, and the anti-counterfeiting performance and printing quality of bills are improved.

The present application relates to a kind of laser holographic aviation gear full-dimension detection method.Currently, traditional optical measurement needs to manually adjust gear posture multiple times to obtain different angle images, and single detection needs to replace multiple fixtures and measurement parameters, which is complex and time-consuming, and difficult to adapt to the quality inspection efficiency requirements of mass production, and there is potential damage to the gear.The present application includes gear positioning and fixing, scanning parameter adaptation, according to the tooth shape type and material characteristics of aviation gear, the laser wavelength, emission power and spot size of laser holographic emission module are set, panoramic scanning path planning, holographic signal acquisition and processing, and defect identification and result output, through the cooperative process of laser holographic scanning path planning, multidimensional signal acquisition and holographic image intelligent analysis, the non-contact panoramic detection of aviation gear tooth surface precision, gear meshing state and internal microscopic defects is realized.The present application is applied to the technical field of aviation parts detection.