CN210199856U - Anti-counterfeiting pattern acquisition device with multiband detection light source - Google Patents
Anti-counterfeiting pattern acquisition device with multiband detection light source Download PDFInfo
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- CN210199856U CN210199856U CN201920924479.6U CN201920924479U CN210199856U CN 210199856 U CN210199856 U CN 210199856U CN 201920924479 U CN201920924479 U CN 201920924479U CN 210199856 U CN210199856 U CN 210199856U
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Abstract
The utility model provides an anti-counterfeiting pattern acquisition device with a multiband detection light source, which comprises a light source unit, a pattern acquisition unit and a pattern processing unit which are connected in sequence; the light source unit is a multiband light source formed by combining light sources with a plurality of wave band wavelengths and different intensities and is used for outputting the light source and exciting a plurality of photoluminescence or photochromic anti-counterfeiting functions; the pattern processing unit is connected with the pattern acquisition unit and is used for receiving and processing the anti-counterfeiting pattern acquired by the pattern acquisition unit. The anti-counterfeiting pattern acquisition device with the multiband detection light source can be used for one-time detection of multiple photoluminescence or photochromic anti-counterfeiting patterns and can acquire images of multiple anti-counterfeiting patterns; the large-format pattern can be subjected to image acquisition in a subarea mode and is spliced and fused into a complete image.
Description
Technical Field
The utility model relates to an image acquisition technical field, more specifically relates to an anti-fake pattern collection system with multiband detection light source.
Background
In the anti-counterfeiting printing, many anti-counterfeiting materials need to be de-excited by light waves of corresponding wave bands to emit light or develop color, and are called as photoluminescence or photochromic materials, and common photoluminescence or photochromic materials have long-wave ultraviolet excited light emission, short-wave ultraviolet excited light emission, infrared excited light emission and the like. Nowadays, counterfeiting measures are more and more advanced, some printed matters pursue various unique artistic effects in order to attract eyes, a single anti-counterfeiting mode is difficult to achieve the aim of effective anti-counterfeiting, and comprehensive anti-counterfeiting which integrates multiple photoluminescence or photochromism is concerned. When detecting and verifying the authenticity of the pattern printed by using the photoluminescence or photochromic material, a detection instrument with a corresponding waveband is needed for verification and identification, and even a large-format and multi-excitation color separation unit in monochrome, color or color is needed for image acquisition.
The existing detection instrument aiming at photoluminescence or photochromic anti-counterfeiting can only verify whether the anti-counterfeiting material is adopted on a product or not, and mostly has no image acquisition function. Chinese patent CN02236928A discloses digital acquisition and identification equipment for bill anti-counterfeiting fluorescent information, which excites and emits light to fluorescent materials in an ultraviolet band of 200-400 nm and acquires images through a process camera. Meanwhile, chinese patent CN02084098U also discloses a fluorescent anti-counterfeiting pattern image acquisition device, which uses 370 nm ultraviolet light source to excite and emit light, and acquires images through a color CCD camera. However, the two methods are similar to the commonly used detectors, a single excitation waveband is used, multiple photoluminescence or photochromic anti-counterfeiting products cannot be excited and image acquisition is not performed, different detectors are required to be used for verification aiming at anti-counterfeiting products applying multiple photoluminescence or photochromic technologies, multiple excitation effects cannot be obtained at the same time, and inconvenience is caused. In addition, the images acquired by the two methods lack selectivity, namely only the color patterns printed by the red, green and blue fluorescent materials can be acquired, and certain color separation patterns cannot be acquired, so that the further anti-counterfeiting verification of the color separation patterns is difficult.
Disclosure of Invention
The utility model aims to provide an anti-fake pattern collection system with multiband detection light source, the anti-fake pattern collection system is not enough among the prior art. The device simple structure not only can arouse multiple photoluminescence or photochromism anti-fake and gather the image simultaneously, can also gather single colour separation pattern as required.
The purpose of the utility model is realized through the following technical scheme:
an anti-counterfeiting pattern acquisition device with a multiband detection light source comprises a light source unit, a pattern acquisition unit and a pattern processing unit which are sequentially connected; the light source unit is a multiband light source formed by combining light sources with a plurality of wave band wavelengths and different intensities and is used for outputting the light source and exciting a plurality of photoluminescence or photochromic anti-counterfeiting functions; the pattern processing unit is connected with the pattern acquisition unit;
the pattern acquisition unit comprises a substrate, and the substrate is used for placing an anti-counterfeiting product; two ends of the base plate are respectively and fixedly provided with a first guide rail, a first sliding block is respectively arranged on the two first guide rails, a second guide rail is fixedly arranged between the two first sliding blocks, the second guide rail reciprocates along the first guide rail through the two first sliding blocks, and a second sliding block is arranged on the second guide rail; the substrate is also provided with a transparent pressing plate which is used for flattening the anti-counterfeiting product and does not block excitation and emission light from passing through; the pattern acquisition unit also comprises an acquisition head for acquiring the patterns of the anti-counterfeiting product, and the acquisition head is fixed on the second sliding block and reciprocates along the second guide rail through the second sliding block;
the anti-counterfeiting pattern acquisition device further comprises a color filter unit, wherein the color filter unit is connected with the pattern acquisition unit, so that the pattern acquisition unit can conveniently acquire a single color separation pattern.
The utility model provides an anti-counterfeiting pattern acquisition device uses four major units such as light source unit, pattern acquisition unit, processing unit and color filter unit as the key, wherein, the light source unit provides the multiband light source for the pattern acquisition unit, realizes simultaneously to multiple photoluminescence or the anti-counterfeiting excitation and the pattern acquisition of photochromism; the pattern processing unit can receive the digital images acquired by the pattern acquisition unit and carry out splicing and fusion processing; the color filter unit can be provided with various color filters according to requirements, so that the collection of a single color separation pattern is realized; the structure of the pattern acquisition unit is designed scientifically and reasonably, and the pattern acquisition work in a large-breadth two-dimensional plane is completed through the cooperation and the cooperation of the sliding block and the guide rail.
Further, the light source unit comprises a multiband light source controller and a plurality of light source heads connected with the multiband light source controller, and the multiband light source controller is connected with the light source heads through optical fibers or electric wires. The multi-band light source controller is used to control different band light source sources to detect, verify and collect patterns printed by different photoluminescent or photochromic materials.
Furthermore, the collecting head comprises a light-shading shell with a hollow bottom, a fixing plate is fixedly arranged in the light-shading shell, a plurality of first through holes are formed in the top of the light-shading shell, a plurality of second through holes are formed in the fixing plate, and the positions of the first through holes and the second through holes are in one-to-one correspondence;
the first through hole and the second through hole can be penetrated by the light source head, and the light source head is also provided with a limiting bulge, so that one end of the light source head is clamped at the first through hole, and a certain distance is reserved between the other end of the light source head and the bottom of the shading shell;
the shading shell is characterized in that a third through hole is formed in the top of the shading shell, a fourth through hole is correspondingly formed in the fixing plate, the camera is connected with the pattern processing unit through a connecting wire, and a limiting protrusion is arranged on the connecting wire to enable the camera to be suspended between the third through hole and the fourth through hole.
The shading shell can form the dark surrounds and carry out the pattern collection, and through a plurality of through-holes one and the corresponding setting of through-hole two, the light source head that can once only fix multiple wave band as required carries out the photoluminescence of multiple wave band or the detection of photochromic material.
Further, the color filter unit comprises a plurality of color filters, and a groove for placing the color filter is further formed in the fixing plate, and the color filter can be pushed in or pulled out along the groove; when the camera is pushed in, the length of the color filter can cover the camera, so that a single color can enter the camera conveniently.
Furthermore, the number of the first through holes and the second through holes is at least 1.
Further, the source head is at least one of a long wave ultraviolet light source head, a short wave ultraviolet light source head, an infrared laser light source head, a near infrared light source head or a white light source head.
Furthermore, the transparent pressing plate is also provided with warps and wefts which are crossed in a cross manner and have fixed intervals. The crossed longitude and latitude lines are adopted to facilitate the position identification so as to facilitate the accurate positioning and movement of the pattern acquisition head.
Furthermore, the transparent pressing plate is made of transparent quartz glass; the thickness of the transparent pressing plate is 0.5-5 mm; the light transmission range of the transparent pressing plate is 185-2500 nm.
Further, the bottom of base plate still is provided with the pad foot, the number of pad foot is 4~8, adjusts the horizontality of base plate through the pad foot.
Further, the pattern processing unit includes an edge fuser and a multi-picture splicer.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides an anti-fake pattern collection system is through gathering overhead a plurality of through-holes one and through-hole two that set up, the light source head that can once only fix multiple wave band as required carries out the photoluminescence of multiple wave band or photochromic material's detection, carry out monochromatic or color image collection through the camera, borrow pattern processing unit again to splice the digital image of gathering, the integration is handled, finally form a complete image, and the accessible sets up the image acquisition that the color filter of camera below carries out single colour passageway to the color image, to sum up, can realize the big breadth, multiple excitation's monochromatic, color separation unit in color or the colour carries out image acquisition.
Drawings
Fig. 1 is a block diagram of an anti-counterfeiting pattern acquisition device in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of an anti-counterfeiting pattern acquisition device according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of the structure of a pattern collection unit of the anti-counterfeit pattern collection apparatus of embodiment 1 of the present invention;
fig. 4 is a schematic view of a collecting head structure of an anti-counterfeit pattern collecting device in embodiment 1 of the present invention;
FIG. 5 is a schematic view of the structure of a transparent pressing plate of the anti-counterfeit pattern collection device of embodiment 1 of the present invention;
fig. 6 is the utility model discloses embodiment 1 anti-fake pattern collection system's camera angle of vision and light source radiation angle schematic diagram.
Detailed Description
To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by an existing method.
Example 1
The embodiment provides an anti-counterfeiting pattern acquisition device with a multiband detection light source, which comprises a light source unit 1, a pattern acquisition unit 2 and a pattern processing unit 3 which are sequentially connected.
As shown in fig. 1 to 5, the light source unit 1 is a multiband light source formed by combining light sources with different intensities and wavelengths in multiple wave bands, and is used for outputting a light source and exciting multiple kinds of photoluminescence or photochromic anti-counterfeiting; the light source unit 1 of the present embodiment includes a multiband light source controller 100 and a plurality of light source heads 200 connected to the multiband light source controller, where the light source head 200 is at least one of a long-wavelength ultraviolet light source head, a short-wavelength ultraviolet light source head, an infrared laser light source head, a near-infrared light source head or a white light source head, the multiband light source controller 100 is connected to the light source head 200 through an optical fiber or an electrical wire, where the optical fiber is used to connect the infrared laser light source head and make it emit infrared laser light, and the electrical wire is used to connect light source heads such as ultraviolet light, near-infrared light, white light and so on and make it emit.
The pattern processing unit 3 is connected with the pattern acquisition unit 2 through a digital image transmission data line and is used for receiving and processing the anti-counterfeiting pattern acquired by the pattern acquisition unit 2, the pattern processing unit 3 of the embodiment comprises an edge fusion device and a multi-picture splicer, specifically, the pattern processing unit 3 performs edge overlapping on the color pattern acquired by the pattern acquisition unit 2 through the edge fusion device, and reduces the brightness of the overlapping part of the adjacent patterns to keep the brightness of the images consistent; the pattern is spliced by the multi-picture splicer, so that the integrity of the image is maintained.
The pattern acquisition unit 2 comprises a substrate 11 for placing an anti-counterfeiting product, two ends of the substrate 11 are respectively fixedly provided with a first guide rail 15, the first guide rail 15 of the embodiment is fixed through 4 fixing piles 13, the two first guide rails 15 are respectively provided with a first sliding block 14, a second guide rail 17 is fixedly arranged between the two first sliding blocks 14, the second guide rail 17 reciprocates along the first guide rail 15 through the two first sliding blocks 14, and the second guide rail 17 is provided with a second sliding block 16; the pattern acquisition unit 2 further comprises an acquisition head 18 used for acquiring the patterns of the anti-counterfeiting products, and the acquisition head 18 is fixed on the second sliding block 16 and reciprocates along the second guide rail 17 through the second sliding block 16.
The collecting head 18 comprises a light shielding shell 180 with a hollow bottom, the light shielding shell 180 is in a cubic shape and is made of light-proof, non-reflective and light black polymethyl methacrylate materials, a fixing plate 181 is fixedly arranged in the light shielding shell 180, a plurality of first through holes 183 are formed in the top of the light shielding shell 180, a plurality of second through holes 184 are formed in the fixing plate 181, and the positions of the first through holes 183 correspond to the positions of the second through holes 184 one by one; the number of the first through holes 183 and the second through holes 184 is at least 1, preferably 4 in the embodiment, the first through holes 183 and the second through holes 184 can be penetrated by a light source head, so that the light source head can be freely inserted and pulled, a limiting protrusion is further arranged on the light source head, one end of the light source head is clamped at the first through holes 183, a certain distance exists between the other end of the light source head and the bottom of the shading shell 180, and the corresponding light source head is selected to be inserted into the first through holes 183 according to the requirements of photoluminescence or photochromic materials and is pulled out when not needed; the top of the shading shell 180 is provided with a third through hole 185, the fixing plate 181 is correspondingly provided with a fourth through hole 186, the camera 182 is connected with the pattern processing unit 3 through a connecting wire, the connecting wire of the embodiment adopts a digital image transmission data wire, and the connecting wire is provided with a limiting protrusion so that the camera 182 is suspended between the third through hole 185 and the fourth through hole 186; the four vias one 183 of this embodiment are evenly distributed around the via three 185.
The bottom of the substrate 11 is further provided with foot pads 19, the number of the foot pads 19 is 4-8, and the number of the foot pads 19 is preferably 4 in the embodiment.
The substrate 11 is also provided with a transparent pressing plate 12 which is used for flattening the anti-counterfeiting product and does not block the passage of excitation and emission light; in order to facilitate position identification and precise positioning movement, the transparent pressing plate 12 of the present embodiment may further be provided with warps and wefts 121 intersecting in a cross shape and having a fixed distance therebetween. The transparent pressing plate 12 provided by the present embodiment is made of transparent quartz glass, and the light transmission range is 185-2500 nm. The thickness of the transparent pressing plate 12 of the present embodiment is 0.5 to 5mm, preferably 3 mm.
In order to facilitate the pattern collecting unit 2 to collect a single color separation pattern, the anti-counterfeiting pattern collecting device of the embodiment further comprises a color filter unit 4, the color filter unit 4 is connected with the pattern collecting unit 2, wherein the color filter unit 4 comprises a plurality of color filters, preferably R, G, B color filters in the embodiment, a groove for placing the color filters is further arranged in the fixing plate 181, and the color filters can be freely pushed or pulled along the groove; the color filter can be pushed in or pulled out without affecting the radiation area of the light source head, one end of the color filter can completely shield the camera 182 when the color filter is pushed in, so that a single color can enter the camera 182 and be collected, and the other end of the color filter is still outside the light shielding shell, so that the color filter can be pushed in and pulled out conveniently, in the embodiment, square holes are respectively arranged on three surfaces of the light shielding shell 180, grooves are formed in the positions, corresponding to the square holes, of the fixing plate, and are respectively used for placing the R color filter 187, the G color filter 188 and the B color filter 189; in capturing a color separation (e.g., blue) channel pattern in a pattern printed with a colored photoluminescent or photochromic material, B filter 189 is advanced to block camera 182 so that only light of a color (e.g., blue) enters camera 182.
As shown in FIG. 6, after the light source head is inserted through the first and second through holes, the light source radiation angle 20 radiates the entire area enclosed by the inner wall of the light-shielding housing 180 of the pick-up head, and a portion of the light is radiated onto the inner wall, so as to ensure that the area enclosed by the inner wall of the light-shielding housing 180 is completely covered by the light, and at this time, the coverage area S1 of the field angle 21 of the camera 182 is identical to the area S2 of the area enclosed by the inner wall of the light-shielding housing 180.
The operation steps of the anti-counterfeiting pattern acquisition device provided by the embodiment are as follows:
s1, placing an anti-counterfeiting product to be detected on a substrate, flattening the anti-counterfeiting product by using a transparent pressing plate, and respectively starting a pattern processing unit power supply, a camera power supply and a multiband light source controller power supply;
s2, connecting the camera with the pattern processing unit by adopting a digital image transmission data line, suspending the camera between the third through hole and the fourth through hole, and adjusting the focal length of the camera to enable the instant image displayed by the computer to have clear visual field;
s3, selecting a proper light source head according to needs, connecting the light source head with the multiband light source controller, placing the light source head in the first through hole, adjusting the distance, and selecting proper light source intensity until photoluminescence or photochromic anti-counterfeiting is excited;
s4, acquiring anti-counterfeiting patterns in different areas on the substrate by using a camera through moving the first sliding block and the second sliding block, and transmitting the acquired patterns to a pattern processing unit, wherein the color filter can be pushed or pulled out as required;
and S5, carrying out fusion and splicing treatment by using a pattern processing unit to form a complete image.
It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An anti-counterfeiting pattern acquisition device with a multiband detection light source is characterized by comprising a light source unit, a pattern acquisition unit and a pattern processing unit which are sequentially connected; the light source unit is a multiband light source formed by combining light sources with a plurality of wave band wavelengths and different intensities and is used for outputting the light source and exciting a plurality of photoluminescence or photochromic anti-counterfeiting functions; the pattern processing unit is connected with the pattern acquisition unit;
the pattern acquisition unit comprises a substrate, and the substrate is used for placing an anti-counterfeiting product; two ends of the base plate are respectively and fixedly provided with a first guide rail, a first sliding block is respectively arranged on the two first guide rails, a second guide rail is fixedly arranged between the two first sliding blocks, the second guide rail reciprocates along the first guide rail through the two first sliding blocks, and a second sliding block is arranged on the second guide rail; the substrate is also provided with a transparent pressing plate which is used for flattening the anti-counterfeiting product and does not block excitation and emission light from passing through; the pattern acquisition unit also comprises an acquisition head for acquiring the patterns of the anti-counterfeiting product, and the acquisition head is fixed on the second sliding block and reciprocates along the second guide rail through the second sliding block;
the anti-counterfeiting pattern acquisition device further comprises a color filter unit, wherein the color filter unit is connected with the pattern acquisition unit, so that the pattern acquisition unit can conveniently acquire a single color separation pattern.
2. The device for collecting an anti-counterfeiting pattern with a multiband detection light source according to claim 1, wherein the light source unit comprises a multiband light source controller and a plurality of light source heads connected with the multiband light source controller, and the multiband light source controller is connected with the light source heads through optical fibers or electric wires.
3. The device for collecting the anti-counterfeiting pattern with the multiband detection light source according to claim 2, wherein the collecting head comprises a light-shielding shell with a hollow bottom, a fixing plate is fixedly arranged inside the light-shielding shell, a camera is arranged between the fixing plate and the top of the light-shielding shell, a first plurality of through holes are formed in the top of the light-shielding shell, a second plurality of through holes are formed in the fixing plate, and the first through holes correspond to the second through holes in position one to one;
the first through hole and the second through hole can be penetrated by the light source head, and the light source head is also provided with a limiting bulge, so that one end of the light source head is clamped at the first through hole, and a certain distance is reserved between the other end of the light source head and the bottom of the shading shell;
the shading shell is characterized in that a third through hole is formed in the top of the shading shell, a fourth through hole is correspondingly formed in the fixing plate, the camera is connected with the pattern processing unit through a connecting wire, and a limiting protrusion is arranged on the connecting wire to enable the camera to be suspended between the third through hole and the fourth through hole.
4. The apparatus of claim 3, wherein the color filter unit comprises a plurality of color filters, and the fixing plate further comprises a slot for placing the color filter, wherein the color filter can be pushed in or pulled out along the slot; when the camera is pushed in, the length of the color filter can cover the camera, so that a single color can enter the camera conveniently.
5. The device of claim 3, wherein the number of the first and second through holes is at least 1.
6. The apparatus of claim 2, wherein the source of light is at least one of a source of long wave ultraviolet light, a source of short wave ultraviolet light, a source of infrared laser light, a source of near infrared light, or a source of white light.
7. The device of claim 1 wherein the transparent platen further comprises a cross-shaped cross-hatch pattern with a fixed pitch.
8. The device for acquiring the anti-counterfeiting pattern with the multiband detection light source according to claim 1 or 7, wherein the material of the transparent pressing plate is transparent quartz glass; the thickness of the transparent pressing plate is 0.5-5 mm.
9. The device for collecting the anti-counterfeiting pattern with the multiband detection light source according to claim 1, wherein the bottom of the substrate is further provided with foot pads, and the number of the foot pads is 4-8.
10. The device of claim 1, wherein the pattern processing unit comprises an edge fuser and a multi-band detection light source.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920924479.6U CN210199856U (en) | 2019-06-19 | 2019-06-19 | Anti-counterfeiting pattern acquisition device with multiband detection light source |
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| CN201920924479.6U CN210199856U (en) | 2019-06-19 | 2019-06-19 | Anti-counterfeiting pattern acquisition device with multiband detection light source |
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| CN210199856U true CN210199856U (en) | 2020-03-27 |
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| CN201920924479.6U Active CN210199856U (en) | 2019-06-19 | 2019-06-19 | Anti-counterfeiting pattern acquisition device with multiband detection light source |
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