CN215203934U - Large-breadth seamless anti-counterfeiting holographic plate and manufacturing device thereof - Google Patents
Large-breadth seamless anti-counterfeiting holographic plate and manufacturing device thereof Download PDFInfo
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- CN215203934U CN215203934U CN202022923790.4U CN202022923790U CN215203934U CN 215203934 U CN215203934 U CN 215203934U CN 202022923790 U CN202022923790 U CN 202022923790U CN 215203934 U CN215203934 U CN 215203934U
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Abstract
The utility model provides a big breadth does not have anti-fake holographic version of version seam and making devices thereof relates to the holographic anti-fake packaging printing technology field of laser. Adding an encrypted image-text appearance of the image-text logo and a surface relief structure capable of being subjected to mould pressing copying into the holographic plate; using narrow-strip fan-shaped convergent laser beam with a certain space rotation angle to obtain a hologram with a determined diffraction angle on a digital holographic lithography machine, wherein the logos are regularly arranged to form a reproduction hologram at a certain angle; the diffraction block areas with different diffraction angles are distributed in the shapes and the positions of the diffraction block areas according to the trend to form a unit hologram; the utility model discloses anti-fake encrypted holographic version can add the pattern characters in applicant's laser version, prevents to duplicate. The brand of an enterprise can be protected, the market can be protected, and the legal rights and interests of consumers can be protected.
Description
Technical Field
The utility model relates to a big breadth does not have anti-fake holographic version of version seam and making devices thereof belongs to the holographic anti-fake packaging printing technology field of laser.
Background
The laser holographic anti-fake is to make the graph and text information into anti-fake image by means of laser holographic plate making technology and mold pressing duplication technology. Currently, the available plate making techniques are: lattice dynamic light, disposable special laser film, 3D optical micro background, colorful optical random interference and the like. The laser anti-counterfeiting pattern is generally observed by the naked eye of a user or by microscopic equipment to observe the internal engraving characteristics, so that the authenticity can be identified. Because the color block code in the hologram is specially designed, even if the same equipment is used, it is difficult to make completely identical holographic mother set, so that the laser holographic plate-making technology has been extensively used in the anti-false package printing industry, and the extensively-used application process is that the hologram can be directly transferred on the paper product, so that it can be extensively used in the tickets, trademarks and credit cards. That is, the labels pressed by the same template are the same, but the templates are influenced by various parameters and environmental conditions in the photoetching process, so that the same two templates are unlikely to be finished, and the anti-counterfeiting function is realized.
However, with the rapid development of computer technology and laser platemaking technology, counterfeiters have been able to duplicate anti-counterfeiting technology. Meanwhile, with the development of modern product packaging, the anti-counterfeiting printing industry puts forward higher requirements on the breadth size of the hologram, and the anti-counterfeiting effect and printing adaptability of the laser anti-counterfeiting image are continuously improved, so that the laser holographic anti-counterfeiting image with low cost, large breadth, good anti-counterfeiting capability and wide printing applicability is difficult to obtain in multiple aspects such as technology, equipment, cost and the like.
The present application was made based on this.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defect that exists among the prior art, the utility model provides a big breadth does not have anti-fake holographic version of version seam and making devices thereof adds the picture and text version of specific logo sign in the holographic version, and products such as laser anti-fake membrane, paper of making through this mother set have seamless, difficult imitative and characteristics such as reproduction, range of application are wide, with low costs.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a large-format seamless anti-counterfeiting holographic plate comprises a holographic plate layer, wherein a plurality of holographic light spots with different diffraction angles are distributed on the holographic plate layer, and selected image-text marks needing to be encrypted are formed by the holographic light spots;
the holographic light spots form a plurality of diffraction block areas, and the holographic light spots with the same diffraction angle form one diffraction block area, so that the diffraction angle of each diffraction block area is different; the diffraction block areas with different diffraction angles are arranged according to the trend of the selected image-text marks to be encrypted to form a unit hologram according to the respective shapes and positions, and the unit holograms are arranged in a seamless mode in a transverse direction and a longitudinal direction to form a plurality of continuous image-text marks to be encrypted.
Preferably, the graphic and text marks formed on the holographic plate layer are in relief structures and can be copied by embossing.
Preferably, the holographic light spots are square, 254 spots are distributed on each inch of lines, and the area of each holographic light spot is 0.001mm2。
Preferably, the cell hologram has a size of 0.04mm by 0.25 mm.
Preferably, the breadth size of the holographic plate is not less than 650mm x 830mm, and the number of encrypted graphic marks is 4-6.
Preferably, the holographic plate layer is a nickel plate made of a nickel material through electroforming.
A device for manufacturing a large-breadth seamless anti-counterfeiting holographic plate comprises an optical component and a digital holographic photoetching machine; the optical assembly comprises a laser emitter, a beam shaper, a first imaging lens, a diaphragm and a second imaging lens which are sequentially arranged and have collinear centers; the digital holographic lithography machine comprises a two-dimensional precise displacement platform, a control system and a holographic photosensitive plate, wherein the two-dimensional precise displacement platform is positioned at the rear side of the second imaging lens;
the control system controls the laser emitter to emit a beam of thin laser beam, and the thin laser beam sequentially passes through each device of the optical assembly and then is irradiated on the holographic photosensitive plate; the aperture of the beam shaper forms an aperture real image on the holographic photosensitive plate through the second imaging lens, and the control system controls the rotation of the beam shaper and the displacement of the two-dimensional precise displacement platform according to the image-text mark to be encrypted, so that a rainbow array light spot hologram containing the encrypted image-text mark is formed after exposure.
Preferably, the control system controls the laser emitter to emit a beam of fine laser beams, the beam shaper forms two primary divergent beams, the first imaging lens forms a primary convergent laser beam, the diaphragm forms two secondary divergent beams, and the second imaging lens forms a secondary convergent laser beam which is incident on the holographic photosensitive plate.
Preferably, the beam shaper is provided with a rotating motor for rotating the beam shaper; the two-dimensional precise displacement platform is provided with a stepping motor which enables the two-dimensional precise displacement platform to displace;
the control system is connected with a rotating motor of the beam shaper, a stepping motor of the two-dimensional precise displacement platform and the laser transmitter through circuits; setting an instruction image in the control system, and respectively sending a plurality of angle instructions to the rotating motor and the stepping motor by the control system according to the instruction image to enable the secondary convergent laser beam to sequentially rotate by corresponding angles; meanwhile, the control system sends a displacement instruction to a stepping motor of the two-dimensional precise displacement platform according to the instruction image and controls the laser emitter to perform seamless time-sharing exposure.
Preferably, the RGB grayscale format command image is obtained by taking a pixel as a unit, and is obtained seamlessly in the horizontal and vertical directions; the control system determines a gray value according to the RGB gray format instruction image and sends three determined angle instructions to the rotating motor, so that the rotating angle of the secondary convergent laser beam is in one-to-one correspondence with various separated pixel gray values on the RGB gray format instruction image; meanwhile, the control system sends a displacement instruction to a stepping motor of the two-dimensional precision displacement platform according to a pixel geometric sequence on the RGB gray scale format instruction image and controls the laser transmitter to realize seamless time-sharing exposure pixel by pixel; and the control system sequentially executes the corresponding instructions of all pixels on the RGB gray scale format instruction image, and the whole seamless space wire drawing texture hologram is recorded on the holographic photosensitive plate.
The utility model discloses a principle and beneficial effect:
the utility model obtains rainbow array light spot hologram by exposing two convergent laser beams with variable rotation angles on a holographic photosensitive plate fixed on a photoetching platform; the rotation angles of the two converged laser beams correspond to the diffraction angles of the light spot hologram one by one; the method comprises the steps that a command image which is preset on a digital holographic photoetching machine and comprises three RGB gray value pixels is used for realizing a plurality of point holograms with three diffraction angles; the point holograms with the same diffraction angle form a plurality of diffraction block areas, the diffraction block areas with different diffraction angles are arranged according to the image-text trend by respective shapes and positions to form a unit hologram, the unit holograms are arranged in a seamless mode in the transverse direction and the longitudinal direction, the whole plate is subjected to photoetching and electroforming copying, and finally, a pattern technology of image-text marks (such as 'hucais' logo) needing to be encrypted is added into the large-breadth seamless fine sand points and the seamless point light variable plate.
The utility model discloses a unit hologram of a large amount of specific design diffraction pieces that contain multiple diffraction angle does the cycle seamless and arranges to it is strong to make holographic version have imitative pseudo-characteristic uniqueness, and anti-fake effect surveyability, and the space of a whole page is seamless, reappears like pleasing to the eye, luminance height.
Drawings
FIG. 1 is a schematic diagram of an encrypted graphic sign (taking "H" as an encrypted graphic) formed in a large-format seamless anti-counterfeiting holographic plate according to the embodiment;
FIG. 2 is a schematic diagram of the principle of the apparatus for manufacturing a large-format seamless anti-counterfeit holographic plate according to the present embodiment;
fig. 3 is a first anti-counterfeiting encryption effect diagram (schematic diagram of a punctiform light variable shading plate (WS) miniature character) of the large-format seamless anti-counterfeiting holographic plate of the utility model under a magnifying lens of 100 times;
fig. 4 is a diagram of the anti-counterfeiting encryption effect of the large-format seamless anti-counterfeiting holographic plate of the present invention under a magnifier 100 times larger than that of the large-format seamless anti-counterfeiting holographic plate (a schematic diagram of fine sand dots (WS) miniature text).
Description of the labeling: the holographic plate comprises a holographic plate layer 1, a holographic light spot 2, a diffraction block area 3, a unit hologram 4, a laser emitter 5, a thin laser beam 6, a beam shaper 7, a primary divergent beam 8, a first imaging lens 9, a primary convergent laser beam 10, a diaphragm 11, a secondary divergent beam 12, a second imaging lens 13, a secondary convergent laser beam 14, a holographic photosensitive plate 15, a pinhole real image 16 control system 17 and an RGB gray scale format instruction image 18.
Detailed Description
In order to make the technical means and the technical effects achieved by the technical means of the present invention clearer and more complete, the following embodiments are provided and are described in detail with reference to the accompanying drawings as follows:
as shown in fig. 1, the large-format seamless anti-counterfeiting holographic plate of the present embodiment includes a holographic plate layer, wherein a plurality of holographic light spots with different diffraction angles are arranged on the holographic plate layer, and the holographic light spots form a selected image-text mark (such as "hugis" logo) to be encrypted; the holographic light spots form a plurality of diffraction block areas, and the holographic light spots with the same diffraction angle form one diffraction block area, so that the diffraction angle of each diffraction block area is different; the diffraction block areas with different diffraction angles are arranged according to the trend of the selected image-text marks to be encrypted to form a unit hologram according to the respective shapes and positions, and the unit holograms are arranged in a seamless mode in a transverse direction and a longitudinal direction to form a plurality of continuous image-text marks to be encrypted.
The graphic mark formed on the holographic plate layer has a relief structure and can be copied by mould pressing. The holographic light spots are square, 254 spots are distributed on each inch of line, and the area of each holographic light spot is 0.001mm2. The dimensions of the element hologram were 0.04mm by 0.25 mm. The size of the holographic plate is not less than 650mm x 830mm, wherein the number of encrypted graphic marks ("hucais") is 4-6. The holographic plate layer is a nickel plate made of nickel material through electroforming.
The hologram plate has a surface relief structure which has a relief pattern 'hucais' logo effect and can be subjected to mould pressing replication through observation by a magnifying glass of 100 times, the hologram is regularly arranged to form diffraction block areas with determined directions, and the diffraction block areas with various different diffraction angles are distributed in respective shapes and positions to form a unit hologram to present a coherent periodic texture reproduction image. The holographic pattern wire drawing texture distribution has space depth and obvious depth of field effect.
As shown in fig. 2, the apparatus for manufacturing a large-format seamless anti-counterfeit holographic plate of the present embodiment includes an optical component and a digital holographic lithography machine; the optical assembly comprises a laser emitter, a beam shaper, a first imaging lens, a diaphragm and a second imaging lens which are sequentially arranged and have collinear centers; the digital holographic lithography machine comprises a two-dimensional precise displacement platform, a control system and a holographic photosensitive plate, wherein the two-dimensional precise displacement platform is positioned at the rear side of the second imaging lens;
the control system controls the laser emitter to emit a beam of thin laser beam, and the thin laser beam sequentially passes through each device of the optical assembly and then is irradiated on the holographic photosensitive plate; the small hole of the light beam shaper forms a small hole real image on the holographic photosensitive plate through the second imaging lens, and meanwhile, the control system controls the light beam shaper to rotate and the two-dimensional precise displacement platform to displace according to the image-text mark to be encrypted, and a rainbow array light spot hologram containing the encrypted image-text mark is formed after exposure.
A fine laser beam 6 generated by a laser transmitter 5 forms two primary divergent laser beams 8 through a beam shaping device 7 arranged on a rotating motor, and the two primary divergent laser beams are converted into a primary convergent laser beam 10 through a first imaging lens 9; the first-order convergent laser beam 10 converges on a diaphragm 11 with a square small hole for shaping and filtering to form two second-order divergent beams 12, and the second-order convergent laser beam 14 with high quality is formed continuously through a second imaging lens 13 and finally converges near a latex plane of a holographic sensitive plate 15 on a two-dimensional precise displacement platform; meanwhile, the aperture of the beam shaping device 7 forms an aperture real image 16 on the latex plane of the holographic plate 15 through the second imaging lens 13, and the exposed image is a rainbow array light spot hologram.
The RGB gray scale format command image 18 preset on the control system 17 of the digital holography lithography machine is obtained by the command image shown in FIG. 1 in a seamless mode in the horizontal direction and the vertical direction. With pixels as units, the control system 17 sends three determined angle instructions to the rotating motor of the beam shaper 7 and the stepping motor of the two-dimensional precision displacement platform of the fixed holographic sensitive plate 15 according to the determined gray values, so that the rotation angle of the secondary converged laser beam 14 is finally in one-to-one correspondence with multiple separated pixel gray values on the RGB gray format instruction image 18; meanwhile, taking the pixel as a unit, the control system 17 sends a displacement instruction to a stepping motor of a two-dimensional precise displacement platform for fixing the holographic photosensitive plate 15 according to a pixel geometric sequence on the RGB gray format instruction image 18, and controls the laser emitter 5 to realize seamless time-sharing exposure pixel by pixel. The control system 17 sequentially executes the corresponding instructions of each pixel on the RGB gray scale format instruction image 18, and the whole seamless space wire drawing texture hologram is recorded on the holographic photosensitive plate 15. And finally obtaining the large-breadth seamless encrypted image-text plate by performing nickel metal electroforming copying on the hologram.
The large-breadth seamless anti-counterfeiting holographic plate is a novel large-breadth seamless fine sand dot and seamless dot-shaped optical variable effect holographic plate, and an image-text image of a 'hucais' logo and a surface relief structure capable of being subjected to mold pressing copying are added into the holographic plate; using narrow-strip fan-shaped convergent laser beam with a certain space rotation angle to obtain a hologram with a determined diffraction angle on a digital holographic lithography machine, wherein the logos are regularly arranged to form a reproduction hologram at a certain angle; the diffraction block areas with different diffraction angles are distributed in the shapes and the positions of the diffraction block areas according to the trend to form a unit hologram; the anti-counterfeiting encryption technology is a technology which can accurately identify true and false within a certain range and is not easy to copy and copy, and is simply a technology for preventing counterfeiting and faking. The anti-counterfeiting encryption can be realized by adding pattern and characters into the laser plate of the applicant to prevent copying. The brand of an enterprise can be protected, the market can be protected, and the legal rights and interests of consumers can be protected.
The above is a detailed description of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be assumed that the embodiments of the present invention are limited to the above description, and it will be apparent to those skilled in the art that the present invention can be implemented in a variety of ways without departing from the spirit and scope of the present invention.
Claims (7)
1. The utility model provides a big breadth does not have anti-fake holographic version of version seam, includes holographic version layer, its characterized in that: a plurality of holographic light spots with different diffraction angles are distributed on the holographic plate layer, and the selected image-text mark to be encrypted is formed by the holographic light spots;
the holographic light spots form a plurality of diffraction block areas, and the holographic light spots with the same diffraction angle form one diffraction block area, so that the diffraction angle of each diffraction block area is different; the diffraction block areas with different diffraction angles are arranged according to the trend of the selected image-text marks to be encrypted to form a unit hologram according to the respective shapes and positions, and the unit holograms are arranged in a seamless mode in a transverse direction and a longitudinal direction to form a plurality of continuous image-text marks to be encrypted.
2. The large format seamless security holographic plate of claim 1, wherein: the image-text mark formed on the holographic plate layer is in a relief structure and can be copied by mould pressing.
3. The large format seamless security holographic plate of claim 1, wherein: the holographic light spots are square, 254 spots are distributed on each inch of line, and the area of each holographic light spot is 0.001mm2。
4. The large format seamless security holographic plate of claim 1, wherein: the cell hologram has dimensions of 0.04mm by 0.25 mm.
5. The large format seamless security holographic plate of claim 1, wherein: the size of the holographic plate is not less than 650mm and 830mm, and the number of encrypted image-text marks is 4-6.
6. The large format seamless security holographic plate of claim 1, wherein: the holographic plate layer is a nickel plate made of nickel materials through electroforming.
7. A device for making a large-format seamless anti-counterfeiting holographic plate according to any one of the claims 1 to 6, wherein: comprises an optical component and a digital holographic photoetching machine; the optical assembly comprises a laser emitter, a beam shaper, a first imaging lens, a diaphragm and a second imaging lens which are sequentially arranged and have collinear centers; the digital holographic lithography machine comprises a two-dimensional precise displacement platform, a control system and a holographic photosensitive plate, wherein the two-dimensional precise displacement platform is positioned at the rear side of the second imaging lens, and the holographic photosensitive plate covers the two-dimensional precise displacement platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022923790.4U CN215203934U (en) | 2020-12-09 | 2020-12-09 | Large-breadth seamless anti-counterfeiting holographic plate and manufacturing device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022923790.4U CN215203934U (en) | 2020-12-09 | 2020-12-09 | Large-breadth seamless anti-counterfeiting holographic plate and manufacturing device thereof |
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| CN215203934U true CN215203934U (en) | 2021-12-17 |
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| CN202022923790.4U Active CN215203934U (en) | 2020-12-09 | 2020-12-09 | Large-breadth seamless anti-counterfeiting holographic plate and manufacturing device thereof |
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