21 results about "Laser holography" patented technology

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 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 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.

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 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.

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 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.

The application provides a laser holographic processing device, comprising: a spatial light modulator arranged in a laser light path, the spatial light modulator being used for modulating a laser beam to form a first modulated light beam; a modulation element arranged in a propagation path of the first modulated light beam, the modulation element comprising a substrate and a conical hole arranged on the substrate, the radius and the depth of the conical hole being in a first curve, a second curve or a high-order nonlinear curve relationship; and a multi-degree-of-freedom bearing platform used for bearing the modulation element and driving the modulation element to translate and / or rotate in multiple directions. The laser holographic processing device provided by the application can effectively balance the durability and the functional integration characteristics by optimizing the quality of the laser beam through the spatial light modulator and modulating the conical hole in different positions and postures.

1. The name of the design product: Laser Holographic Refractive Sight (A02 Pro). 2. The use of the design product: for aiming at targets. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a kind of " code scanning prior to true and false scratch again to trace back " anti-fake traceability label and system, it is related to commodity anti-fake technical field.The label of the present application separates and sets dynamic two-dimensional code area and the check code area covered with laser holographic anti-fake silver scratch layer in space, and the surface of silver scratch layer has unique " physical fingerprint " pattern.When verifying, consumer first scans dynamic two-dimensional code, compares the real label picture on mobile phone screen with the " physical fingerprint " reference image stored in cloud, and completes true and false identification without damaging label.After confirming that it is correct, scratch coating to obtain check code to view detailed product traceability information.The present application realizes the separation of non-destructive appearance verification and destructive information traceability by reconstructing verification process, solves the consumer dispute problem caused by traditional " scratch first and then verify " mode, greatly improves the anti-fake security and user experience.

The utility model belongs to the technical field of anti-counterfeit labels, and particularly relates to an anti-counterfeit label. The laser holographic hot stamping scratch-resistant paper comprises glassine paper, water-based pressure-sensitive adhesive, anti-counterfeiting paper and a digital printing layer which are sequentially stacked from bottom to top, a surface scratch-resistant area barrier layer is arranged on the digital printing layer, and a laser holographic hot stamping scratch layer is laid at the top end of the surface scratch-resistant area barrier layer. According to the utility model, the production efficiency is improved by 70% under the condition that a label surface visual effect and a functional one-object one-code data multi-point-location unduplicated visual design effect are realized by means of digital variable and random variable super line, random variable fingerprints, color variable patterns and color variable digital technologies, wherein the image-text color change shows a functional one-object one-code data multi-point-location unduplicated visual design effect. And a holographic and variable random data multi-point verification and acquisition anti-counterfeiting function in a specified area is realized.

This invention relates to the field of laser holographic image generation technology, and more particularly to a method and apparatus for generating thin-film holograms. The system includes steps S1: thin-film pretreatment; S2: coating operation and continuity detection; S3: quality ratio analysis of the coated thin film; S4: holographic image inspection; and S5: adjustment of coating quality inspection parameters. This invention performs surface pretreatment on the thin film, conducts a coating operation and performs continuity detection on the coating liquid, performs quality ratio analysis when the detection result indicates local discontinuity, and implements corresponding recoating measures. After illumination treatment, image recognition technology is used to inspect the quality of the hologram on the thin film, and relevant parameters are adjusted based on quality fluctuations during the coating process to ensure that the final product meets quality standards. This invention features efficient and stable coating technology, ensuring thin-film quality while improving production efficiency, and has broad applicability to the production of anti-counterfeiting labels, trademarks, and custom stickers.