CN113920849A

CN113920849A - Anti-counterfeiting mark and preparation method thereof

Info

Publication number: CN113920849A
Application number: CN202111230956.7A
Authority: CN
Inventors: 劳国华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-11

Abstract

The application discloses an anti-counterfeiting mark and a preparation method thereof, wherein the anti-counterfeiting mark comprises an optical microlens grating formed by arranging a plurality of grating units; the grating unit is an optical microlens semi-cylindrical grating unit body; the bottom of the optical microlens grating is provided with an image layer; micro-image marks are printed in each area of the image layer covered by each optical micro-lens; the relative positions of the micro-image marks and the optical axes of the corresponding optical lenses are the same. The method for printing the micro-image mark on the bottom of each optical micro-lens in the optical micro-lens grating is adopted, the anti-counterfeiting mark is hidden when the human eyes are used for directly watching by utilizing the relative angle relation between the position of the micro-image mark arranged at the bottom of the optical micro-lens and the optical axis of the optical micro-lens, and the anti-counterfeiting mark is displayed when the human eyes are used for watching by virtue of the camera, so that whether the anti-counterfeiting mark is the correct anti-counterfeiting mark or not is determined according to the direct watching effect of the human eyes and the indirect watching effect of the camera.

Description

Anti-counterfeiting mark and preparation method thereof

Technical Field

The application relates to the technical field of optical anti-counterfeiting, in particular to an anti-counterfeiting mark and a preparation method thereof.

Background

Counterfeiting of goods is an ancient problem. In order to prevent the commodities from being counterfeited, in the prior art, the aim of preventing illegal imitation and counterfeiting is fulfilled by adding the anti-counterfeiting mark on the commodities. However, the existing anti-counterfeiting marks are images which can be directly identified by human eyes, and consumers cannot identify the authenticity of the anti-counterfeiting marks on the loaded commodities, so that the anti-counterfeiting effect cannot be expected.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present application is to provide an anti-counterfeit mark and a method for manufacturing the same, so as to improve the anti-counterfeit effect.

An original commodity mark pattern is combined with an optical microlens grating and a special configuration and printing program to manufacture the invisible anti-counterfeiting mark. The anti-counterfeiting label is characterized in that the anti-counterfeiting label can not be seen on the commodity package directly, and the anti-counterfeiting label can be restored and displayed on a screen by utilizing a mobile phone camera.

In order to solve the above problems, the present application provides an anti-counterfeit mark, including an optical microlens grating formed by arranging a plurality of grating units; the grating unit is an optical microlens semi-cylindrical grating unit body; the bottom of the optical microlens grating is provided with an image layer; micro-image marks are printed in each area of the image layer covered by each grating unit; the relative positions of the micro-image marks and the optical axes of the corresponding grating units are the same.

Further, the image layer is a net array consisting of a plurality of printing net points; each of the lithography units constituting the micro-image mark is disposed at a corresponding position of the grid array.

Furthermore, each lithography unit has the same color or at least two lithography units with different colors exist.

Furthermore, each micro-image unit is collected from different image templates; wherein the image template is created by pattern units divided by the original mark pattern.

Further, the original logo design is a single color design or a multi-color design.

Further, the image layer is printed with a colored additional pattern.

Further, an additional pattern is printed on the outside of the micro-image mark.

Further, the additional pattern is a single color design or a multi-color design.

Further, the image layer is a planar structure.

Further, the width of the grating unit is 0.07 mm-0.3 mm.

Further, the lithographic image mark is printed on the image layer by conventional printing, inkjet printing or pad printing.

Further, a preparation method of the anti-counterfeiting mark is also provided, which comprises the following steps:

providing an optical microlens grating composed of a plurality of grating units; wherein, the grating unit is an optical microlens semi-cylindrical grating unit body;

setting the bottom of the optical microlens grating as an image layer;

printing micro-image marks in each area of the image layer covered by each grating unit; wherein, the relative positions of the optical axes of each micro-image mark and each corresponding grating unit are the same.

Further, the image layer is a net array consisting of a plurality of printing net points;

printing micro-image marks in each area of the image layer covered by each grating unit, comprising:

printing a plurality of micro-image units on a plurality of printing screen points in the area to form micro-image marks; wherein, different micro-image units are collected from different image templates, and the image templates are created by the pattern units divided by the original mark patterns.

Further, still include:

printing a colored additional pattern on the image layer; wherein the additional pattern is printed outside the micro-image mark.

Further, a product using the anti-counterfeiting mark is also provided, and comprises a product body and the anti-counterfeiting mark of the embodiment;

the anti-counterfeiting mark is carried on the surface of the product body.

The embodiment of the application has the following beneficial effects:

the embodiment of the application provides an anti-counterfeiting mark and a preparation method thereof, wherein the anti-counterfeiting mark comprises an optical microlens grating formed by arranging a plurality of grating units; wherein, the grating unit is an optical microlens semi-cylindrical grating unit body; the bottom of the optical microlens grating is provided with an image layer; micro-image marks are printed in each area of the image layer covered by each grating unit; the relative positions of the micro-image marks and the optical axes of the corresponding grating units are the same. Compared with the prior art, the method for printing the micro image mark on the bottom of each optical micro lens in the optical micro lens grating is adopted, the anti-counterfeiting mark is hidden when the anti-counterfeiting mark is directly watched by human eyes and displayed when the anti-counterfeiting mark is watched by the aid of the camera by utilizing the relative angle relation between the position of the micro image mark arranged at the bottom of the optical micro lens and the optical axis of the optical micro lens, and whether the anti-counterfeiting mark is the correct anti-counterfeiting mark is determined according to the direct watching effect of the human eyes and the indirect watching effect of the camera, so that the anti-counterfeiting effect is improved.

Drawings

Fig. 1 is a schematic perspective view of a security mark provided in an embodiment of the present application;

FIG. 2 is a front view of a grating unit;

FIG. 3 is a schematic perspective view of an optical microlens grating;

FIG. 4 is a top view of the security device with the optical microlens array partially removed;

FIG. 5 is a side view of the security device with the optical microlens array partially removed;

FIG. 6 is a perspective view of the security device with the optical microlens array partially removed;

FIG. 7 is a schematic diagram of the mobile terminal integrating invisible lithography marks;

FIG. 8 is yet another schematic diagram of the mobile terminal integrating invisible lithography marks;

FIG. 9 is an effect diagram of the fixed-point viewing of the anti-counterfeit mark through the mobile terminal;

FIG. 10 is a diagram showing the effect of mobile viewing of the anti-counterfeit mark through the mobile terminal;

FIG. 11 is a diagram showing the correspondence between a grid array and a grating unit;

FIG. 12 is a diagram illustrating the relationship between the micro image marks and the grating units formed after the micro image units are disposed on the grid array;

FIG. 13 is a diagram illustrating another mapping relationship between the micro image marks and the grating units formed after the lithography units are disposed on the grid array;

FIG. 14 is a side view of a security feature provided in accordance with example two of the present application;

FIG. 15 is a diagram showing the positional relationship between an additional pattern and an optical microlens;

fig. 16 is a first design form of an image layer provided in the second embodiment of the present application;

fig. 17 is a second design form of an image layer provided in the second embodiment of the present application;

fig. 18 is a third design form of an image layer provided in the second embodiment of the present application;

fig. 19 is a schematic flow chart of a method for preparing an anti-counterfeit mark provided in the third embodiment of the present application;

FIG. 20 is a schematic flow chart of the process of forming the microimage marks on the image template;

FIG. 21 is a further schematic flow chart of the formation of microimage marks by the image template;

FIG. 22 is a diagram showing the positional relationship between the micro-image mark and the grating unit.

101, optical microlens grating; 102. a grating unit; 103. an image layer; 104. an optical axis; 105. an additional pattern; 20. micro-image marks; 21-25, a lithography unit; 10. an original logo pattern; e11-e15, transverse pattern units; 111, 115, image template.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Referring to fig. 1, a schematic perspective view of a security mark provided in an embodiment of the present application, which includes an optical microlens grating 101 formed by arranging a plurality of grating units 102. The grating unit 102 is an optical microlens, a semi-cylindrical grating unit body. The bottom of the optical microlens grating 101 is provided as an image layer 103. The micro-image marks 20 are printed in each area of the image layer 103 covered by each grating unit 102. The lithography image marks 20 are compressed micro image marks, and the relative positions of each lithography image mark 20 and the optical axis 104 of each corresponding grating unit 102 are the same.

It should be noted that the area covered by each grating unit 102 is the same in size.

In the present embodiment, the lithography image mark 20 is a lithography image formed by compression processing, and is printed on the image layer 103 at the bottom of the optical microlens array 101 by a printing plate making method. Since each micro image mark 20 is covered by each grating unit 102, each micro image mark 20 is invisible due to light reflection.

In the present embodiment, as shown in fig. 2, it is a front view of the raster unit. The grating unit 102 includes an optical axis 104, and the width of the grating unit 102 is 0.07mm to 0.3 mm. An optical microlens grating formed therefrom may be as shown in fig. 3.

In the present embodiment, as shown in FIG. 4, the lithographic image mark 20 is formed by dividing the original mark pattern 10 with a total height E into 5 horizontal cells E11-E15, and compressing the cells in the vertical direction into micro image cells 21-25. The optical microlens grating 101 is a microlens grating material, and is composed of a plurality of transverse grating units 102, and the grating units 102 are repeatedly arranged along the vertical direction to form the optical microlens grating 101. The micro image marks 20 are arranged on the image layer 103 at the bottom of the optical microlens grid 101, the height of the micro image marks is smaller than the width of the corresponding grid unit 102, and the position of each micro image mark 20 is corresponding to each grid unit 102 and is configured at the same position. The original logo pattern 10 may be a multi-color design or a single-color design.

In the present embodiment, the partial area of fig. 4 is the optical microlens array 101, and the other partial area is the area after the optical microlens array 101 is removed, which shows the arrangement state of the optical microlens array 101 corresponding to the lithography image mark 20, and the corresponding side view and the corresponding perspective view thereof can be as shown in fig. 5 and fig. 6.

In this embodiment, the lithographic image marker 20 is printed on the image layer 103 by conventional printing, inkjet printing or pad printing. Specifically, the lithographic image mark 20 may be printed on the image layer 103 by a print-out process after being copied and arranged, or may be printed on a separate printing material, and then pasted or transfer-printed on the image layer 103 after printing.

Because of the relative angle relationship between the positions of the micro image markers 20 arranged on the image layer 103 and the optical axis 104 of the grating unit 102, the line of sight of the eye can only cover certain angles of the micro lens, and the full appearance of the micro image markers 20 is not seen, so that the micro image markers 20 are hidden, and by arranging each micro image marker 20 at the same position of each grating unit 102 corresponding to the image layer 103, the human eye can not observe the complete micro image markers 20 of the image layer 103 at all angles, thereby further improving the anti-counterfeiting effect.

As shown in fig. 7-8, since the optical angle of the camera of the smart terminal, such as a mobile phone, is larger than the angle of the micro-lens, when the smart terminal is used to view the anti-counterfeit label at a short distance, the relative angle of the optical axis 104 of each micro-lens covered by the camera is different, and only a small portion of the lithography mark 20 hidden in each micro-lens can be seen. If the camera covers n microlenses, the camera only sees 1/n of the microimage marks 20 on the surface of each microlens, and because each microimage mark 20 corresponds to the same position of each microlens unit, the hidden microimage mark 20 is integrated on the display screen of the intelligent terminal. The effect of the integrated complete micro-image mark 20 after the anti-counterfeit label is viewed at a fixed point through the intelligent terminal is shown in fig. 9.

Since the relative positions of each lithography mark 20 and the optical axis 104 of each corresponding optical lens are the same, the whole anti-counterfeit mark can be kept displayed in the center of the screen of the smart terminal by facing the mobile phone to any position of the anti-counterfeit mark or continuously moving the mobile phone, as shown in fig. 10.

The image layer 103 is a grid of a plurality of printing dots, and the individual lithography units constituting the micro-image mark 20 are arranged at corresponding positions on the grid. Wherein, the colors of all the lithography units are the same, or at least two lithography units with different colors exist between all the lithography units. Different lithography units are acquired from different image templates. These image templates are created by the color pattern units divided by the original logo pattern 10.

In the present embodiment, the image layer 103 is a grid array composed of a plurality of printing dots, the corresponding relationship between the image layer and the grating unit 102 is shown in fig. 11, and each of the lithography units is respectively disposed on the printing dots of different rows in the grid array to form the micro-image mark 20, as shown in fig. 12 or fig. 13. The colors of the micro-image units can be respectively red, green, blue, pink and cyan. Wherein the red lithography image elements are acquired from a red image template created by the red pattern elements divided by the original logo pattern 10. The lithography units of other colors are collected from the image templates of the corresponding colors, which are created by the pattern units of the corresponding colors divided by the original mark pattern 10, and are not described herein again.

Note that the number of mesh points covered by each grating unit 102 is the same.

Further, in the present embodiment, the image layer 103 is a planar structure, and is parallel to the bottom of the optical microlens grating 101.

By designing the micro-image mark 20 into a multi-color pattern, human eyes can see different colors when observing the anti-counterfeiting mark through different angles, thereby improving the anti-counterfeiting effect. And because the image layer is a planar structure and parallel to the bottom of the optical microlens grating, different colors are more easily observed from different angles.

Further, referring to fig. 14, a side view of the anti-counterfeit mark provided in the second embodiment of the present application is shown. In this embodiment, in addition to the structure shown in fig. 1, the present invention further includes:

the image layer 103 is printed with a coloured additional pattern 105. The additional patterns 105 printed in different regions of the image layer 103 may be the same color or different colors. The additional pattern 105 may be a multi-color design or a single-color design.

In the present embodiment, the additional pattern 105 is located on a blank dot of the image layer 103 except the lithographic image mark 20. Preferably, the additional pattern 105 is printed on the exterior of the microimage 20 so that the additional pattern 105 is directly visible to the human eye at certain angles.

In the present embodiment, the additional pattern 105 is printed on the blank dots corresponding to the image layer 103 in segments, and the corresponding relationship between the positions of the additional pattern and the optical microlenses can be as shown in fig. 15.

In this embodiment, the additional pattern 105 may be designed in any pattern, preferably, as shown in fig. 16 to 18.

Through setting up the additional pattern, make people's eye when watching anti-counterfeit marking, can directly see the additional pattern, but can not directly see little image sign, and when using mobile terminal's camera to watch anti-counterfeit marking, can watch the additional pattern of multiple coloured and take different coloured little image sign simultaneously, thereby according to the direct viewing effect of people's eye and with the help of the indirect viewing effect of camera, can confirm whether anti-counterfeit marking is correct anti-counterfeit marking, and then further improve anti-counterfeit effect.

Further, refer to fig. 19, which is a schematic flow chart of a method for preparing an anti-counterfeit mark provided in the third embodiment of the present application. The method comprises the following steps:

s1, providing an optical microlens array composed of a plurality of array units.

The grating unit is an optical micro-lens semi-cylindrical grating unit.

In the present embodiment, the width of the grating unit is 0.07mm to 0.3 mm.

S2, the bottom of the optical microlens array is set as an image layer.

In the present embodiment, the image layer is a planar structure and parallel to the bottom of the optical microlens array.

And S3, printing micro image marks in each area of the image layer covered by each grating unit.

The relative positions of the micro-image marks and the optical axes of the corresponding grating units are the same, and the size of the area covered by each optical micro-lens is the same.

As a preferred example of this embodiment, the image layer is a matrix of a plurality of printing dots. In step S3, a plurality of lithography units are printed on the plurality of printing dots in the region to form a micro-image mark. Wherein, different micro-image units are collected from different image templates, and the image templates are created by the pattern units divided by the original mark patterns.

As shown in fig. 20, in the present embodiment, the original logo pattern 10 having a height E is vertically divided into 5 lateral pattern units E11-E15, wherein E11 is red (R), E12 is green (G), E13 is blue (B), E14 is peach red (M), and E15 is cyan (C). The image template 111-115 is created from the pattern elements e11-e15, wherein the vertical height T of the image template is equal to the height H of the image layer, or equal to the total number of vertical dots in the image layer. After the image template is created, the image template is divided into a number of transverse subsections t, each indicated at t1, t2, t3 …, the total number of subsections being equal to the total number of vertical dots d in the image layer. The respective transverse subsections of the image template 111-115 are configured according to the arrangement times of the pattern units e11-e15, so that the transverse subsections are sequentially configured on the corresponding positions of the image layer consisting of a plurality of dots to form the lithography units 21-25, then the lithography units 21-25 are converted into printing dots through a printing program and are printed on the preset positioning dots in the image layer, and thus the corresponding lithography marks 20 are formed in each area of the image layer covered by each optical microlens. Wherein the lithography units 21-25 have to cover at least one dot.

Because the image layer is the network array area, the anti-counterfeiting mark can be conveniently printed according to each network point in the manufacturing process of the anti-counterfeiting mark, thereby greatly reducing the manufacturing difficulty of the anti-counterfeiting mark.

As another preferred example of this embodiment, as shown in FIG. 21, the original logo pattern 10 is divided into 5 laterally different color pattern units R, G, B, M and C by vertical height, and the original logo pattern 10 is compressed in the vertical direction into a micro-image containing lithography units 21-25(Δ R, Δ G, Δ B, Δ M, Δ C), and then the lithography units are arranged on separate printing plates P-R, P-G, P-B, P-M and P-C, respectively. Wherein P-R, P-G, P-B, P-M and P-C are abbreviated as color printing plates. Wherein R represents red, G represents green, B represents blue, M represents pink, and C represents cyan. If the original logo pattern 10 is designed in a single color, the entire lithography image can be directly arranged on the printing plate P.

Preferably, the vertical width of the grating unit 102 is divided into 10 equal partitions, the vertical widths of the compressed lithography units Δ R, Δ G, Δ B, Δ M and Δ C are equal to one equal partition width of the grating unit 102, and the vertical width of the synthesized micro image is equal to 1-5 equal partitions of the vertical width of the grating unit 102, preferably 0.05 mm.

After the lithographic cells 21-25 are arranged on each individual color printing plate P-R, P-G, P-B, P-M and P-C, the cells are arranged in order at the corresponding positions on the respective color printing plate and 1000 cells are copied in the vertical direction. For example, 1000 units R are arranged on the color printing plate P-R. If the original logo pattern 10 is designed in a single color, 1000 single color micro-images can be directly reproduced on the printing plate P. The distance between the lithographic image units of the color printing plates P-R, P-G, P-B, P-M and P-C replicated in the vertical direction is equal to the width of the raster unit 102, and the distance between the compressed lithographic image replicated by the printing plate P is equal to the width of the raster unit 102. Wherein the height of the grating unit is preferably 0.1mm, and the vertical total width of the printing plate is 100mm, which is equal to the vertical total width 41 of the optical microlens grating 101.

After the arrangement is completed, the vertical center point of the micro-image unit or the micro-image of the printing plate P of each color printing plate P-R, P-G, P-B, P-M and P-C is adjusted so that the pattern formed by the micro-image unit or the pattern formed by the micro-image is aligned with the optical axis of the grating unit. The horizontal axis through this center point, which at the same time passes through the optical axis, must be parallel to the transverse grating elements. At this point, the alignment of the printing plate is completed and the lithographic image of the printing plate can be printed or pad printed onto the image layer on the back of the optical microlens array to form a compressed logo pattern on the image layer, as shown in FIG. 22.

In this embodiment, the method further comprises printing a colored additional pattern on the image layer.

Wherein the additional pattern is printed outside the micro-image mark.

Preferably, the additional patterns printed in different areas of the image layer may be of the same or different colors. When the human eyes watch the anti-counterfeiting mark, the additional pattern can be directly seen. The additional pattern may be a multi-color design or a single-color design.

Further, an embodiment of the present application further provides a product using an anti-counterfeit mark, including a product body and the anti-counterfeit mark as in the first embodiment or the second embodiment, where the anti-counterfeit mark is carried on a surface of the product body.

The product body comprises a valuable document, an identity identification document, a trademark product and the like.

The foregoing is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims

1. The anti-counterfeiting mark is characterized by comprising an optical microlens grating formed by arranging a plurality of grating units; the grating unit is an optical micro-lens semi-cylindrical grating unit body; the bottom of the optical microlens grating is an image layer; micro-image marks are printed in each area of the image layer covered by each grating unit; the relative positions of the micro-image marks and the optical axes of the corresponding grating units are the same.

2. The authentication mark of claim 1 wherein the image layer is a matrix of a plurality of printed dots; the micro image units forming the micro image mark are arranged on the corresponding position of the grid array.

3. The security feature of claim 2 wherein each of the microimage elements has the same color or at least two microimage elements having different colors are present.

4. The anti-counterfeiting mark according to claim 2, wherein each micro-image unit is acquired from a different image template; wherein the image template is created by pattern units divided by an original logo pattern.

5. The authentication mark of claim 4 wherein the original logo image is a single color design or a multi-color design.

6. The authentication mark of claim 1 wherein the image layer is printed with a colored additional pattern.

7. The authentication mark of claim 6 wherein the additional pattern is printed on the exterior of the micro-image mark.

8. The authentication mark of claim 6 wherein the additional pattern is a single color design or a multi-color design.

9. The authentication mark of claim 1 wherein the image layer is a planar structure.

10. The anti-counterfeit label according to claim 1, wherein the width of the grating unit is 0.07mm to 0.3 mm.

11. The authentication mark according to any one of claims 1 to 10, wherein the micro-image mark is printed on the image layer by conventional printing, inkjet printing or pad printing.

12. A preparation method of an anti-counterfeiting mark is characterized by comprising the following steps:

providing an optical microlens grating composed of a plurality of grating units; the grating unit is an optical micro-lens semi-cylindrical grating unit body;

setting the bottom of the optical microlens grating as an image layer;

printing micro-image marks in each area of the image layer covered by each grating unit; the relative positions of each micro-image mark and the optical axis of each corresponding grating unit are the same.

13. The method of claim 12, wherein the image layer is a matrix of a plurality of printing dots;

the printing of the micro-image mark in each area of the image layer covered by each grating unit comprises:

printing a plurality of micro-image units on a plurality of printing screen points in the area to form a micro-image mark; different micro-image units are collected from different image templates, and the image templates are created by pattern units divided by original mark patterns.

14. The method for preparing a security marking according to claim 12, further comprising:

15. A product using a security mark, comprising a product body and the security mark of any one of claims 1 to 10;

the anti-counterfeiting mark is carried on the surface of the product body.