181 results about "Laser holography" patented technology

A Fabry-Perot cavity comprised of three-dimensional photonic crystal structures is disclosed. The self-assembly of purified and highly monodispersed microspheres is one approach to the successful operation of the device for creating highly ordered colloidal crystal coatings of high structural and optical quality. Such colloidal crystal film mirrors offer high reflection with low losses in the spectral window of the photonic band gap that permit Fabry-Perot resonators to be constructed with high resolving power, for example, greater than 1000 or sharp fringes that are spectrally narrower than 1.0 nm. The three-dimensional photonic crystals that constitute the Fabry-Perot invention are not restricted to any one fabrication method, and may include self-assembly of colloids, layer-by-layer lithographic construction, inversion, and laser holography. Such photonic crystal Fabry-Perot resonators offer the same benefits of high reflection and narrow spectral band responses available from the use of multi-layer dielectric coatings. However, the open structure of three-dimensional photonic crystal films affords the unique ability for external media to access the critical reflection layers and dramatically alter the Fabry-Perot spectrum, and provide means for crafting novel laser, sensor, and nonlinear optical devices. This open structure enables the penetration of gas and liquid substances, or entrainment of nano-particles or biological analytes in gases and liquids, to create subtle changes to the colloidal mirror responses that manifest in strong spectral responses in reflection and transmission of the collective Fabry Perot response.

The invention relates to the technology of laser holography anti-counterfeiting hot stamping, in particular to a preparation method for laser hot stamping foil of a metal coin and prepared laser hot stamping foil by using the method, and provides a preparation method for laser hot stamping foil of a metal coin and prepared laser hot stamping foil by using the method, which can adapt to gold stamping on the surface of the metal coin, enrich patterns on the surface of the metal coin, has an anti-counterfeiting function and is suitable for printing after stamping. The preparation method comprises the steps that a metallic nickel plate is manufactured, and a release layer, an imaging layer, a mold pressing layer, an aluminum coated layer and an adhesive layer are coated on a basement membrane strip, so that the metal coin has a brand-new effect, the operation process is simple and rapid, reproducibility of texts is good, large-scale production and durability are realized, the cost is reduced, the adhesion of the laser hot stamping foil is high, after being fastened on the surface of a metal product, the hot stamping foil does not easily fall off and has a smooth surface, through changing the formula of the adhesive layer and coating the adhesive layer for multiple times, a multi-layer bonding layer is formed, so that texts are firmly adhered on the surface of the metal, and wear resistance and weather fastness are realized.

The invention relates to diffracted light image changing high speed laser write through method. It includes the following steps: do electrostatic image for incidence parallel light reaches beam-splitting element though diaphragm; gathering the beam-slitting light to produce interference fringe optical field; orderly photoengraving interference fringe with different trend to form micro light grating image. Its features are that it is adopted solid state ultraviolet laser to produce laser beam; and it is used TTL signal control to realize laser beam pulse output; the two sets of the laser beam have zero optical path difference; optical system and photoresist dry plate are moved on two one dimension directions which are vertical with each other; photolithography is adopted continual motion, continual pulse exposing type. Thus the invention realizes high speed laser write through photolithography system to make diffracted light changing image original edition manufacturing shorten between many hours to seventeen hours. It really enters industrialization application period, and is the important breakthrough of digitalization advanced manufacturing technique in laser holographic technique field.

The invention relates to a method for manufacturing scratchable laser holography anti-fake foil, taking a plastic polyester film as a substrate layer, comprising the following steps of: superposing a release layer on the substrate layer; superposing a laser molding color layer on the release layer, comprising evenly coating the dissolved resin on the surface of the release layer, and baking and drying via a five-section oven; superposing a holography anti-fake molding layer on the laser molding color layer, comprising forming visual laser patterns and information by a laser information layer via a roller coated with laser engraved laser plates; superposing a printing layer on the holography anti-fake molding layer; superposing a vacuum aluminized coating layer on the printing layer, comprising heating an evaporator to 1400-1500 DEG C, cooling the high-purity aluminum wires continuously sent to the evaporator into aluminum steam, evenly spraying aluminum molecules on the surface, and forming an aluminum film; and superposing a gum layer on the vacuum aluminized coating layer. The product manufactured by the method provided by the invention is high in printing production efficiency and is scratched once; the product has certain anti-fake effects and can replace a traditional method for scratching ink by a squeegee.

The invention relates to a laser holographic anti-counterfeiting stamping technology and particularly relates to a metallic coin stamped with a holographic anti-counterfeiting pattern and a manufacturing method thereof and provides the metallic coin which has a laser holographic anti-counterfeiting function and exquisite pattern and is stamped with the holographic anti-counterfeiting pattern and the manufacturing method of the metallic coin. The manufacturing method comprises the following steps of: duplicating a laser holographic image on a metallic nickel plate to form a metal nickel plate for die pressing; coating a release layer, an imaging layer, a die pressing layer, an aluminum plating layer and a dual-layer adhesive layer on a film belt of a base film; positioning, transferring and stamping a laser electrochemical aluminum stamping foil on the metallic coin; heating a stamping head to 80-90DEG C; meanwhile, preheating and improving the temperature of the original metallic coin to 90-100DEG C; and removing the film belt of the base film by the release layer to form the metallic coin with laser holographic pattern. The metallic coin generates a new visual color in the overlapped laser effect and is a novel metal coin anti-counterfeiting type; and in addition, the metallic coin has the advantages of accuracy in positioning, strong three-dimensional sense, abundant layers, simple and quick process, one-time transfer stamping, favorable reproducibility and no pollution.

The invention discloses a device and method for carrying out parallel processing of scattering net points of light guide plates through femtosecond lasers. The device comprises a light guide plate transmitting and locating device, a light guide plate processing center device, a heat removal and dust removal device, a femtosecond laser holography parallel processing system and a control center. The light guide plate transmitting and locating device comprises a light guide plate transmitting mechanism, an adsorption device and a grating locating sensor. The light guide plate processing center device comprises a complete machine bridge, a supporting plate and ball screw feed devices in the direction X and the direction Y. The femtosecond laser parallel processing system is a beam splitting and conduction device used for emitting a laser beam through a femtosecond laser device and comprises the femtosecond laser device, light path transmitting and controlling equipment, a spatial light modulator (SLM) and a microscope and monitor system. According to the device and method, the liquid crystal spatial light modulator (LCSLM) is utilized for locating a computer generated hologram (CGH), parallel processing of multiple light beams can be achieved at a time, the processing speed can be effectively increased, the processing efficiency is remarkable, the processing time is shortened, and the processing cost is greatly reduced.

The invention proposes an optically readable barcode anti-counterfeiting structure and a realization method. The structure is composed of a barcode part and a light-changing area. The light-changing area is set at least one area around the barcode logo, and the light-changing area is a laser holographic film made by optical diffraction, or a light-changing film made by optical interference, or a light-changing film printed by OVI light-changing ink made by optical interference. Light images, or thin films formed by arrays of microlenses. As the reading angle changes, the combination of the light-changing area and the printed image of the logo will form various images that cannot be reproduced by ordinary scanners. At the same time, the optical readability dot matrix code can also be embedded All kinds of anti-counterfeiting and traceability information will not affect the printing quality of the image. Through three kinds of anti-counterfeiting technologies, the anti-counterfeiting, anti-copying, commodity traceability and other functions of public mobile phone reading can be realized. The method can solve the problem that all signs that can be read by mobile phones in the world can be copied, and has the characteristics of being simple, practical and easy to popularize.

Anti false identifier includes special type printing layer, basal membrane, fluorescent layer, protective layer, particularity detection layer, vacuum plating copper layer, laser hologram layer, regular engraved tearing off layer, protective coat layer of chemical etched pattern and not dried glue layer. The manufacturing procedure includes following steps: raw material, printing fluorescent layer, coating protective layer (information layer), coating particularity detection layer, vacuum plating copper, hologram molding etc. Multiple anti false techniques are integrated on the identifier, possessing advantages of easy use and easy recognition.

The invention provides a laser holographic anti-counterfeiting stamping foil containing magnetic encryption information and a preparation method thereof. A separation layer, an information recording layer and a medium layer are arranged in turn between a plastic carrier film layer and a bonding glue layer. The laser holographic anti-counterfeiting stamping foil is characterized in that a magnetic coat is also arranged between the medium layer and the bonding glue layer; moreover, a magnetic material is not printed on the surface of the stamping foil but coated on the medium layer; thus, the magnetic material cannot cover holographic patterns, and magnetic information writing and reading can be carried out through an instrument; therefore, the stamping foil not only contains holographic anti-counterfeiting information, but also has the function of magnetic encryption information anti-counterfeiting protection to obtain the effect of multiple anti counterfeiting.

The invention relates to the technical field of particle analysis and discloses a particle shape analyzing device based on a laser holography imaging method and a working mechanism of the particle shape analyzing device. The device comprises a laser, a microscope lens, a diaphragm, a transparent observation piece and an image sensor, wherein a fluid inlet and outlet hole channel is formed in the transparent observation piece. The laser holography imaging method is adopted to directly perform interference on particles in a to-be-measured fluid, holographic imaging information is produced and then is subjected to data inversion processing, space imaging information reflecting the particle shape can be obtained, so that a filter membrane is not needed, sample contamination can be avoided, measurement errors and consumable costs can be reduced, and the operating process of the device is simplified. Besides, the device has the advantages of high real-time performance, high particle resolution and wide detection object range, and actual application and popularization are facilitated.

The invention provides a grating-based rainbow hologram chromaticity detection and evaluation method, which mainly comprises the following steps of: determining the type and optical parameters of a diffraction grating, and selecting an optical filter according to the type characteristics of the grating; preserving or shielding specular reflection light according to actual needs by adopting a diffused light source; and testing the reflectance spectrums of a sample, calculating spectral errors and metamerism indexes of a reference and the sample according to the reflectance spectrums of the tested sample, and evaluating the chromaticity information of a grating-based rainbow hologram image according to the spectral errors and the metamerism indexes. The method has the advantages of objectively reflecting the chromaticity information between the sample and the reference and accurately reflecting chromaticity errors between the sample and the reference, along with simplicity and high speed, and is popularized and utilized to effectively control the chromaticity quality of the grating-based rainbow hologram image and promote laser holographic anti-counterfeiting, three-dimensional printing and control over the quality of grating-based high-end products.

The invention relates to a processing method for preparing a novel 2D code image holographic anti-counterfeiting label. The 2D code image holographic anti-counterfeiting label is generated by the following steps that a digital image of a beautified 2D code is generated; an anti-counterfeiting code is embedded into the digital image according to a digital watermarking method; the digital image embedded with the anti-counterfeiting code is printed into a paper image; and the paper image is attached to a laser holographic anti-counterfeiting label directly or indirectly. Identification of the 2D code image holographic anti-counterfeiting label includes an image signal collection module, an identification module, a display module and a voice broadcast module, wherein the image signal collection module is used to collect an image of the novel anti-counterfeiting code label, the identification module processes, encodes and decodes the image, the display module displays the decoded original anti-counterfeiting code, and the voice broadcast module broadcasts information of the original anti-counterfeiting code. The processing module is complex is preparing technology, identification needs special processing, and the anti-counterfeiting performance is greatly improved by encrypting information of the anti-counterfeiting code.

This invention discloses a method for producing electric controlling variable-focus optical imaging system, which comprises the following steps: a) preparing two pieces of glass chip with nesa, b) coating a recording layer mixed of the pre-polymeric material of photo-induced solidifying high polymer with length of 5-10mu m and liquid crystal between the glass chip, c) designing the different holographic optical path to prepare electric controlling focusing holographic lens with different focus by laser holography or computer holography, d) superimposing N electric control lenses with different focus parameter, e) adjusting the electrical field controlling order, then getting 2N focuses, f) computing and controlling field controlling combination and order of single lens to achieve the function of continuous magnification of optical system.

The invention provides a multifunctional integrated intaglio printing press which comprises an unreeling device, an introduction deviation rectifying device, a double-traction device, a printing unit, an edge cutting device, a belling device, a die cutting device, a soft pack cutting device and an automatic stacking paper collecting device. A first traction guide device, a gilding device, a holographic positioning ironing device, the belling device, an online detection device and a second traction guide device are sequentially arranged between the printing unit and the edge cutting device. The printing unit comprises at least nine gravure printing devices, and the multiple gravure printing devices are combined to form multi-color continuous gravure. The first traction guide device and the second traction guide device are provided with stepless speed regulating mechanisms to control the tension and the linear speed of paper passing the gilding device, the holographic positioning ironing device and the belling device at high accuracy, and accuracy control and position control over hot stamping, laser holography transfer printing and raised ironing of cigarette packs are achieved at the same time. The invention further provides a machining process of the multifunctional integrated intaglio printing press.

A method for forming an embossed holographic pattern comprises the following steps: A. recording the required pattern onto a photo-sensitive plate by means of laser holography to produce an optical mask plate for the holographic pattern; B. duplicating the laser holographic information on the optical mask plate onto a metal plate, to produce a metal plate for the holographic pattern; C. transferring the laser holographic pattern on the metal plate onto an information layer on a water soluble film, to form an embossed holographic water transfer printing film; D. carrying out a cubic water transfer printing on the surface of a base material by using the embossed holographic water transfer printing film, to form the holographic pattern on the surface of the base material. With the method for forming the embossed holographic pattern according to the present invention, a holographic pattern can be formed on the surface of work-piece having a complex shape.

The invention provides a tamper-evident label with functions of a laser holography label and a two-dimensional bar code and a preparation method of the tamper-evident label. The tamper-evident label comprises a base film layer, an embossed information layer, a metal reflecting layer, a hollowed-out print layer, a protective layer, a digital printing layer and an adhesive sticker layer in the sequence from top to bottom. The preparation method comprises the following steps: coating the base film layer with the embossed information layer, and carrying out drying and curing; carrying out embossing by an embossing machine, so that holographic patterns are copied to the embossed information layer; plating the metal reflecting layer in a winding-type vacuum coating machine; printing the specially-made hollowed-out print layer on the metal reflecting layer; coating the whole hollowed-out print layer with the protective layer; printing the two-dimensional bar code containing various information; coating an adhesive sticker; compounding with semitransparent silicone oil paper; carrying out die cutting; carrying out slitting; carrying out inspection; and putting into storage. For the tamper-evident label, the laser holography anti-counterfeiting function and various variable data information extraction functions are simultaneously obtained, in addition, the function of preventing the label from being torn through an improper means so as to further avoid the malicious bar code scanning is also provided, and the label has the advantages of anti-counterfeiting property, tamper-evident property and disposable use property.

The invention relates to polyethylene film laser holographic anti-fake method, which can effectively solve the anti-fake problem of the polyethylene film packages. The method is characterized in that the polyethylene is made into package film coils by blow molding and flow casting; through corona treatment, the brand patterns are made on polyester film or poly-propyl film coils by the laser holographic anti-fake technology; after that, low-temperature transfer mediums are coated on the polyester film or poly-propyl film coils, and the existing anti-fake pattern coils are compounded on the surface of the polyethylene film; through the treatment of heat preservation, the two coils are peeled and coiled by a peeling device; the anti-fake patterns are firmly attached to the surface of the polyethylene film and does not deform; the films with the holographic anti-fake patterns are printed into motley packages by a printing machine, and colorful luster and printing patterns of the holographic anti-fake motley coexist on the polyethylene films. The invention has the advantages of not affecting the name of the product, patterns and hot sealing, laser holographic anti-fake effect when applied to the bag preparation, leading a user to ensure the property right not to be infringed.

The invention relates to a laser dynamic security inspection method, which adopts a device comprising a monitor, a laser photography device and an image building device. In security inspection, the laser transmitted from a he-ne laser is reflected via a reflector and is divided into two beams via a light splitter, wherein one light beam is directly transmitted to the reflector to be reflected to a phase plate, the other light beam penetrates an object and reflects the object to the phase plate, the two light beams are interfered on the phase plate to form an interference map; the image building device comprises a he-ne laser, when in imaging, according to the angle of the incident light, the he-ne laser radiates the phase plate to form a three-dimension image to be transmitted to the monitor to be observed. The invention has the advantages that the observation angle of the device can be changed to observe the side surfaces and the shaded parts of the object, the image definition will be reduced while the blocks become smaller. In image construction, each image can be independently displayed without interfering with other images. In shooting, the device can reconstruct different scenes corresponding to the incident illumination beams of different angles. The invention is convenient for storing three-dimension information.

The invention belongs to the field of laser holography anti-fake packaging materials and in particular relates to a production method for partial laser holography transfer paper. The production methodcomprises the following steps: (1) performing coating, namely according to layout designing requirements of partial transfer paper, manufacturing a special edition coating anilox roller, and partially coating a PET (polyethylene terephthalate) base membrane by a transfer coating; (2) performing mold pressing, namely performing mold pressing on laser holography anti-fake information on a mold pressing machine, wherein holography information is mold-pressed in an area coated by the transfer coating, and an area without the transfer coating is not provided with the holography information; (3) performing aluminum plating, namely performing aluminum plating according to a normal laser holography aluminum plating process, enabling an aluminum layer to adhere to the coating in the area coated bythe transfer coating, and enabling an aluminum layer to adhere to the PET base membrane in the area without the transfer coating; and (4) performing combining peeling, namely smearing a transfer adhesive in a whole edition on a combining machine to combine an aluminum layer surface of the laser holography partial transfer membrane with paper, and peeling off the PET base membrane, so as to obtainpartial transfer paper. The edge of the partial transfer paper obtained by using the method is tidy, and the packaging molding speed can be greatly increased, that is, is up to 800 pieces of paper/minute at most.

The invention relates to the field of a legal certificate visual anti-fake technology, in particular to a legal certificate visual anti-fake component. The legal certificate visual anti-fake component comprises a substrate layer, an information layer, a lingering layer, a reflective layer and a reinforced layer which are sequentially compounded from top to bottom, wherein the substrate layer is a PETG thin film, and the substrate layer and the information layer are integrated. A preparation method of the legal certificate visual anti-fake component includes the steps of selecting the PETG thin film as the substrate layer; copying a laser holography work version; coating the information layer on the substrate layer, and copying holographic grating of the laser holography work version onto the information layer; manufacturing the lingering layer and manufacturing the reflective layer on the lingering layer; developing; manufacturing the reinforced layer; curing the reinforced layer. According to the legal certificate visual anti-fake component and the preparation method of the legal certificate visual anti-fake component, the PETG thin film is adopted as the substrate layer, the PETG thin film can be softened under a certain temperature and pressure and can be directly bonded with a clamp body, environmental protection is facilitated, the PETG thin film is in crosslinking with the information layer to a certain degree, and the combination is quite tight. Besides, the manufacturing process is particular, and a great leap is achieved on the certificate visual anti-fake technology.

The invention relates to a sand table manufacturing method based on machine learning, and belongs to the technical field of sand table manufacturing. The problems that a sand table is long in manufacturing cycle, authenticity is lacked during displaying and an adjustment cannot be made in real time in the prior art are solved. The method includes the following steps of establishing a laser holographic projection prediction model and a geomorphic information prediction model to be trained, adjusting projection parameters and geomorphic information of a laser holographic projector in real time through the trained models, conducting sand table projection imaging through the laser holographic projector according to the projection parameter value, and conducting sand table geomorphic manufacturing through a mechanical arm according to the geomorphic information. The sand table manufacturing process is rapid and efficient, the geomorphic state can be truly displayed and simulated through laser holographic projection, the terrain is rapidly piled and adjusted through the mechanical arm, the optimal projection parameters and geomorphic information can be obtained in real time through the models trained through machine learning, the projection state and geomorphology are automatically corrected and adjusted in real time, and the manufactured sand table reaches the optimal projection size and effect.