CN113545573A - Commemorative coin and anti-counterfeiting invisible method thereof - Google Patents
Commemorative coin and anti-counterfeiting invisible method thereof Download PDFInfo
- Publication number
- CN113545573A CN113545573A CN202110833459.XA CN202110833459A CN113545573A CN 113545573 A CN113545573 A CN 113545573A CN 202110833459 A CN202110833459 A CN 202110833459A CN 113545573 A CN113545573 A CN 113545573A
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- Prior art keywords
- cones
- square
- commemorative coin
- coin
- reflecting surface
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Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C21/00—Coins; Emergency money; Beer or gambling coins or tokens, or the like
Abstract
The invention discloses a commemorative coin and an anti-counterfeiting invisible method thereof. The commemorative coin is provided with an invisible area, wherein the invisible area is provided with a plurality of square cones with equal edges and equal intervals in array arrangement, the square cones with equal edges are provided with four equant conical surfaces, and the four equant conical surfaces correspond to four directions, namely an upper direction, a lower direction, a left direction and a right direction; according to the overall outline of the font, displaying the azimuth on the outline of the font, inwards recessing the equant conical surfaces of some quadrate equiangular cones in a plurality of quadrate equiangular cones arranged in a point-distance array to form a positive reflecting surface, and maintaining the equant conical surfaces of the rest quadrate equiangular cones to be the original conical surfaces; the shapes and structures of the convex reflecting surfaces of the square cones with the square prisms are the same in four directions. The invention can solve the technical problem of how to make the section of the outline of the display font simpler and easier to design.
Description
Technical Field
The invention relates to a commemorative coin, in particular to a coin, wherein a character hidden in the coin can be seen only in a specific direction and a specific angle, so that an anti-counterfeiting invisible function is realized. The scheme also relates to an anti-counterfeiting hiding method of the coin.
Background
The commemorative coin is generally processed by micro-carving in order to have good anti-counterfeiting function, and although the current micro-carving technology is mature, the application of the commemorative coin is limited due to the fact that the equipment cost is high. In order to reduce the cost, a stealth mode is used for replacing the method, wherein the stealth mode means that the characters on the coin can be observed only in a specific direction and a specific angle, and if the characters cannot be seen, the commemorative coin is counterfeited. The current invisible mode is to design different sections in different orientations according to the outline of the characters on the coin, so that when the coin is seen in the orientations, the sections reflect light to form the outline of the characters, and the characters invisible in the orientations can be observed. In order to avoid the overlapping of font outlines of characters with different orientations to influence the appearance of the font outlines, the shapes of a section in one orientation and a section in another orientation need to be designed differently, the shapes need not to influence each other, no projection ghost is generated, and simultaneously, because the shapes of each character are different and the angles of the sections need to be designed by considering the unique shape of each character, whether the design is complicated is caused, if the design parameters slightly deviate, the invisible effect is poor, and therefore, the application of the invisible mode is limited at present.
Disclosure of Invention
The invention aims to provide a commemorative coin, which solves the technical problem of how to make the section displaying the outline of a font simpler and easier to design.
The commemorative coin is provided with an invisible area, wherein the invisible area is provided with a plurality of square cones with equal edges and equal intervals in array arrangement, the square cones with equal edges are provided with four equant conical surfaces, and the four equant conical surfaces correspond to four directions, namely an upper direction, a lower direction, a left direction and a right direction; according to the overall outline of the font, displaying the azimuth on the outline of the font, inwards recessing the equant conical surfaces of some quadrate equiangular cones in a plurality of quadrate equiangular cones arranged in a point-distance array to form a positive reflecting surface, and maintaining the equant conical surfaces of the rest quadrate equiangular cones to be the original conical surfaces; the shapes and structures of the convex reflecting surfaces of the square cones with the square prisms are the same in four directions.
The included angle between the positive reflecting surface and the commemorative coin surface is smaller than the included angle between the equally divided conical surface and the commemorative coin surface; the positive reflecting surface is formed by projecting an equally divided conical surface to the direction of the coin surface, and two sides above the positive reflecting surface are hidden side surfaces.
The included angle between the male reflecting surface and the coin surface of the commemorative coin is 41-46 degrees.
The included angle between the equant conical surface and the coin surface of the commemorative coin is 51-62 degrees.
The hidden side surface is a quadrangle or a triangle.
The two sides of the triangle are straight sides or arc sides.
The square cones with the four edges and the like are rotatably matched with the coin surface, and the coin surface is provided with two-dimensional codes for displaying four character contents.
The square cones with the same square edges are integrally spliced into a square or round shape.
The whole of the positive reflecting surface is triangular, and three side surfaces of the positive reflecting surface are arc edges.
The commemorative coin anti-counterfeiting invisible method comprises the following steps: configuring an invisible area on the commemorative coin, and processing a plurality of square cones such as four edges and the like which are protruded and arranged in an equidistant array in the invisible area; the concave male light reflecting surface is designed on each square cone with the four edges and the shape of the original cone is maintained according to the outlines of the four fonts, the shape and the structure of the male light reflecting surface in the upper, lower, left and right directions are the same, so that when the square cones with the four edges and the like are seen from the directions, the male light reflecting surface in the directions can display the outlines of the fonts in the directions, and meanwhile, the outlines of the fonts in other directions cannot be displayed, so that projection overlapping is not caused.
The invention has the beneficial effects that:
the cone adopts a square cone with four edges and the like, and corresponds to the left, right, upper and lower directions; the external reflection surface is designed by square cones such as four edges, and the shape and the mechanism of the external reflection surface in each direction are the same, so that different sections are not required to be designed in each direction, the design of the sections, namely the reflection surfaces, can be simplified, the projection in each direction is not influenced, and the projection overlapping is avoided.
Drawings
FIG. 1 is a schematic top view of a single square pyramid with four conical surfaces;
FIG. 2 is a schematic top view of a single square pyramid with three conical surfaces and a male reflective surface;
FIG. 3 is a schematic top view of a square pyramid with two conical surfaces and two convex reflective surfaces adjacent to each other;
FIG. 4 is a schematic top view of a square pyramid with two conical surfaces and two convex reflective surfaces;
FIG. 5 is a schematic top view of an arrangement of a plurality of four cone-shaped cones and a plurality of cones with a positive reflecting surface in an equidistant array in a hidden area;
FIG. 6 is a schematic view of FIG. 5 showing the outline of the glyph "one" viewed from the right position;
FIG. 7 is a schematic top view of an invisible region with a plurality of cones with four cones, a plurality of cones with one male reflective surface, and a plurality of cones with two male reflective surfaces arranged in an equidistant array;
FIG. 8 is a schematic view of FIG. 7 showing the outline of the glyph of "yi" as viewed from the right position;
FIG. 9 is a schematic view of FIG. 7 showing the outline of the "two" glyph as viewed from the right position;
in the figure, 1, a square cone with four equal edges, 11, an oblique cone surface and 12, a positive reflecting surface.
Detailed Description
Referring to fig. 1 to 9, the commemorative coin in the figures is a round coin, the main body is mainly made of steel core nickel plating, and in order to achieve the anti-counterfeiting effect, a round invisible area is designed at the position of a central ring of the coin, and the diameter of the invisible area is half of the diameter of the coin. And a plurality of convex square cones 1 with equal edges are closely arranged in the invisible area according to an equidistant array. The square pyramid 1 is that the whole pyramid adopts a square structure, and the pyramid adopts a square structure. Four faces are formed by designing the four edges, so that the four faces correspond to the upper, lower, left and right directions of the outline of the displayed font; the square cone structure is adopted, so that the viewing in different directions cannot be influenced mutually. The heights of the square cones 1 with the four edges and the like are the same, the only difference is that some conical surfaces of some square cones 1 with the four edges and the like are designed to be kept with original inclined conical surfaces 11, and some conical surfaces are designed to be inwards sunken to form a positive reflecting surface 12, wherein the positive reflecting surface 12 is formed by performing grooving treatment on the original inclined conical surfaces 11, namely the projection of the original inclined conical surfaces 11 to the coin surface of the commemorative coin is formed. The outline of the font can be displayed by combining the conical surface of the square cone 1 with a plurality of different square pyramids such as four prisms and the like and the positive reflecting surface 12. In practical application, the invisible area can also be designed into a regular or irregular shape such as a square shape, a diamond shape and the like. The position of the invisible area can be selected according to the requirement. FIG. 1 shows a square pyramid 1 without a sun-reflecting surface and with four beveled surfaces 11; FIG. 2 shows a square pyramid 1 with a positive reflecting surface and three oblique conical surfaces 11; FIG. 3 shows a square pyramid 1 with two convex reflecting surfaces, two oblique conical surfaces 11 arranged adjacently; fig. 4 shows a square pyramid 1 with two male reflective surfaces and two oppositely arranged oblique conical surfaces 11.
In order to form the projection, the included angle between the positive reflecting surface and the commemorative coin surface is designed to be 41-46 degrees, the included angle between the equant conical surface and the commemorative coin surface is 51-62 degrees, and the included angle between the positive reflecting surface and the commemorative coin surface is smaller than the included angle between the equant conical surface and the commemorative coin surface. By equidistant array is meant that the number of equirectangular pyramids 1 in the lateral and longitudinal positions is the same. When the groove is dug to form the positive reflecting surface 12, symmetrical hidden side surfaces are formed on two sides above the positive reflecting surface 12, and the groove digging is a material removing design, namely removing materials from the original inclined conical surface 11 to form the positive reflecting surface 12. The hidden side surface can be designed into a quadrangle or a triangle according to the situation. When the reflecting surface is designed to be triangular, the highest vertex of the positive reflecting surface 12 is superposed with the vertex of the conical inclined surface; two sides of the triangle are designed to be straight sides, so that the two sides of the triangle can be bent upwards to form arc sides simply if the reflecting area of the light reflecting surface 12 needs to be enlarged. When the reflector is designed to be quadrilateral, the highest vertex of the reflecting surface 12 has an upper and lower height difference with the top surface of the conical inclined surface. Correspondingly, the reflecting surface 12 can also refer to the design of the straight edge and the circular arc edge of the hidden side surface. In practical application, the square cones 1 with four edges and the like can be designed to have a clearance with each other by the original close attachment, and simultaneously, the cones can be designed to be matched with the coin surfaces in a rotating relationship, so that the matching relationship with the coin surfaces is more diversified, and the cones can be rotationally adjusted by the way, thereby increasing the practicability of products. The rotatable mode can be used as an entertainment mode, namely, the rotatable mode can be used as a toy like a magic cube, and the whole coin surface needs to be expanded. The specific mode is that the male reflective surface 12 of the cone is disorganized, the unique four-character words corresponding to the commemorative coin are obtained by scanning the two-dimensional code of the coin surface, and then the male reflective surface 12 of the cone is adjusted to be in the correct position so as to correctly display the outline of the character, so that the character can be collected by adults as the commemorative coin and played by children as a toy.
The anti-counterfeiting invisible method of the commemorative coin is completed according to the following steps: firstly, designing an invisible area in the commemorative coin, and processing a plurality of square cones 1 which are transversely and longitudinally arranged, protruded and arranged in an equidistant array in the invisible area through a micro engraving machine; designing corresponding inward concave male light reflecting surfaces 12 for each square pyramid 1 according to the outlines of the four fonts in four directions or maintaining the shape of the original pyramid; the whole of the above-mentioned positive reflecting surface 12 is the same in left, right, upper, lower, four azimuths, thus when looking at square pyramid 1 such as the square pyramid in this azimuth, the positive reflecting surface 12 of this position can be complete to display the font outline that corresponds to, and the font outline of other azimuths can't display so as not to cause the projection to overlap at the same time. As can be seen from fig. 5 and 6, the outline of the shape of the Chinese character yi can be clearly seen from the right direction of the invisible area; as can be seen from fig. 7, 8 and 9, the outline of the shape of the letter "one" is clearly seen from the right side of the invisible area, and the outline of the shape of the letter "two" is clearly seen from the left side of the invisible area. The above is only a simple example, and in practical applications, the square pyramid 1 with four prisms and the like can be designed according to different fonts.
The above-described embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In the description of the present technical solution, it should be noted that the terms such as "above" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of describing the technical solution and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, should not be construed as limiting the technical solution.
Although embodiments of the present technical solution have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the technical solution, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. Commemorative coin, its characterized in that: the rectangular pyramid comprises an invisible area, wherein the invisible area is provided with a plurality of rectangular pyramids which are arranged in an array at equal intervals and are protruded, the rectangular pyramids have four equant conical surfaces, and the four equant conical surfaces correspond to four directions, namely an upper direction, a lower direction, a left direction and a right direction; according to the overall outline of the font, displaying the azimuth on the outline of the font, inwards recessing the equant conical surfaces of some quadrate equiangular cones in a plurality of quadrate equiangular cones arranged in a point-distance array to form a positive reflecting surface, and maintaining the equant conical surfaces of the rest quadrate equiangular cones to be the original conical surfaces; the shapes and structures of the convex reflecting surfaces of the square cones with the square prisms are the same in four directions.
2. A commemorative coin according to claim 1, wherein: the included angle between the positive reflecting surface and the commemorative coin surface is smaller than the included angle between the equally divided conical surface and the commemorative coin surface; the positive reflecting surface is formed by projecting an equally divided conical surface to the direction of the coin surface, and two sides above the positive reflecting surface are hidden side surfaces.
3. A commemorative coin according to claim 2, wherein: the included angle between the male reflecting surface and the coin surface of the commemorative coin is 41-46 degrees.
4. A commemorative coin according to claim 3, wherein: the included angle between the equant conical surface and the coin surface of the commemorative coin is 51-62 degrees.
5. A commemorative coin according to claim 4 wherein: the hidden side surface is a quadrangle or a triangle.
6. A commemorative coin according to claim 5, wherein: the two sides of the triangle are straight sides or arc sides.
7. A commemorative coin according to claim 6 wherein: the square cones with the four edges and the like are rotatably matched with the coin surface, and the coin surface is provided with two-dimensional codes for displaying four character contents.
8. A commemorative coin according to claim 7, wherein: the square cones with the same square edges are integrally spliced into a square or round shape.
9. A commemorative coin according to claim 8, wherein: the whole of the positive reflecting surface is triangular, and three side surfaces of the positive reflecting surface are arc edges.
10. The commemorative coin anti-counterfeiting invisible method is characterized by comprising the following steps: the method comprises the following steps: configuring an invisible area on the commemorative coin, and processing a plurality of square cones such as four edges and the like which are protruded and arranged in an equidistant array in the invisible area; the concave male light reflecting surface is designed on each square cone with the four edges and the shape of the original cone is maintained according to the outlines of the four fonts, the shape and the structure of the male light reflecting surface in the upper, lower, left and right directions are the same, so that when the square cones with the four edges and the like are seen from the directions, the male light reflecting surface in the directions can display the outlines of the fonts in the directions, and meanwhile, the outlines of the fonts in other directions cannot be displayed, so that projection overlapping is not caused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110833459.XA CN113545573A (en) | 2021-07-23 | 2021-07-23 | Commemorative coin and anti-counterfeiting invisible method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110833459.XA CN113545573A (en) | 2021-07-23 | 2021-07-23 | Commemorative coin and anti-counterfeiting invisible method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113545573A true CN113545573A (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110833459.XA Pending CN113545573A (en) | 2021-07-23 | 2021-07-23 | Commemorative coin and anti-counterfeiting invisible method thereof |
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|---|---|---|---|---|
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| TW200912362A (en) * | 2007-05-07 | 2009-03-16 | Jds Uniphase Corp | Structured surfaces that exhibit color by rotation |
| JP2011123154A (en) * | 2009-12-09 | 2011-06-23 | Toppan Printing Co Ltd | Display body and article with display body |
| JP2013039756A (en) * | 2011-08-18 | 2013-02-28 | National Printing Bureau | Forgery-proof support |
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| US20170157973A1 (en) * | 2015-12-03 | 2017-06-08 | Lumenco, Llc | Arrays of individually oriented micro mirrors for use in imaging security devices for currency and brand authentication |
| US20170203601A1 (en) * | 2014-05-26 | 2017-07-20 | Toppan Printing Co., Ltd | Counterfeit preventing structure and counterfeit preventing article |
| KR102020244B1 (en) * | 2018-03-21 | 2019-09-10 | 한국조폐공사 | A product formed multidirectional latent images and Manufacturing Method |
| CN110709235A (en) * | 2017-06-27 | 2020-01-17 | 株式会社Lg化学 | Decorative member and method for producing same |
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2021
- 2021-07-23 CN CN202110833459.XA patent/CN113545573A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07137491A (en) * | 1993-11-16 | 1995-05-30 | Toppan Printing Co Ltd | Forgery preventive sheet and method of confirming its original image |
| CN1706663A (en) * | 2004-06-08 | 2005-12-14 | 中国印钞造币总公司 | Technological process of making coin with multiple-surface concealed engraving |
| CN1830681A (en) * | 2006-04-21 | 2006-09-13 | 中国印钞造币总公司 | Manufacturing method of metal surface multiple latent image and antifalse product made by said method |
| TW200912362A (en) * | 2007-05-07 | 2009-03-16 | Jds Uniphase Corp | Structured surfaces that exhibit color by rotation |
| JP2011123154A (en) * | 2009-12-09 | 2011-06-23 | Toppan Printing Co Ltd | Display body and article with display body |
| JP2013039756A (en) * | 2011-08-18 | 2013-02-28 | National Printing Bureau | Forgery-proof support |
| CN105015215A (en) * | 2014-04-30 | 2015-11-04 | 中钞特种防伪科技有限公司 | Optical anti-counterfeiting element and manufacturing method thereof |
| US20170203601A1 (en) * | 2014-05-26 | 2017-07-20 | Toppan Printing Co., Ltd | Counterfeit preventing structure and counterfeit preventing article |
| US20170157973A1 (en) * | 2015-12-03 | 2017-06-08 | Lumenco, Llc | Arrays of individually oriented micro mirrors for use in imaging security devices for currency and brand authentication |
| CN110709235A (en) * | 2017-06-27 | 2020-01-17 | 株式会社Lg化学 | Decorative member and method for producing same |
| KR102020244B1 (en) * | 2018-03-21 | 2019-09-10 | 한국조폐공사 | A product formed multidirectional latent images and Manufacturing Method |
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