CN110133847B - Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure - Google Patents

Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure Download PDF

Info

Publication number
CN110133847B
CN110133847B CN201910355637.5A CN201910355637A CN110133847B CN 110133847 B CN110133847 B CN 110133847B CN 201910355637 A CN201910355637 A CN 201910355637A CN 110133847 B CN110133847 B CN 110133847B
Authority
CN
China
Prior art keywords
micro
array
period
pattern
graphic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910355637.5A
Other languages
Chinese (zh)
Other versions
CN110133847A (en
Inventor
黄鹏
何传王
董小春
范斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute of Optics and Electronics of CAS
Original Assignee
Institute of Optics and Electronics of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institute of Optics and Electronics of CAS filed Critical Institute of Optics and Electronics of CAS
Priority to CN201910355637.5A priority Critical patent/CN110133847B/en
Publication of CN110133847A publication Critical patent/CN110133847A/en
Application granted granted Critical
Publication of CN110133847B publication Critical patent/CN110133847B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

The invention discloses a design method for non-array dynamic display anti-counterfeiting patterns based on microstructures, which comprises the following steps: (1) designing a micro-graphic array; (2) amplifying the micro graphic array unit; (3) collecting the pixels of the micro graphic array unit; (4) and (4) rearranging the micro-pattern array. And finally, displaying the designed dynamic graph by using the micro lens array which has the same arrangement mode with the micro graph array as a decoding chip. The invention has unique visual effect, can display non-arrayed unit graphs and can also enable dynamic graphs to disappear or emerge along with the change of observation visual angles.

Description

Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure
Technical Field
The invention relates to a design method for dynamically displaying an anti-counterfeiting pattern based on a micro lens array and a micro pattern array. The design method utilizes pixel acquisition and rearrangement, and the formed rearranged micro-graphic array can be displayed by a micro-lens array. The dynamic graph designed by the method has unique effect, can display the graph unit instead of the graph array, and can emerge or disappear along with the change of the visual angle. The structure can be used for increasing the attraction of commodities or in the anti-counterfeiting of the commodities.
Background
Due to the characteristics of small volume, light weight, convenience in integration and the like of the micro-lens array, a plurality of functions which cannot be realized by the traditional optical elements can be realized. With the development of micromachining technology, microlens arrays have been used in the fields of optical information processing, optical computing, optical data transmission, and the like. There are many methods for fabricating microlens arrays, and the technologies for adding microlens array elements, such as ion exchange, electron beam writing, photolithography, etching, replication, and the like, are increasing.
Two gratings with slightly different spatial frequencies are overlapped, and the fringes formed by the difference frequency components of the gratings are called moire fringes. When there is relative movement of the two gratings, the moire fringes also move. Moire fringes have become an optical anti-counterfeiting technique and are reported in many articles. However, many moire patterns are limited to the stripe patterns formed by the grating, the design is simple, the pattern moving mode is single, and the moire patterns are greatly limited in practical application.
In order to further develop the moire pattern technology, a micro lens array is matched with a micro pattern array in the prior art to form a dynamic pattern with multiple patterns, the effect of the dynamic pattern is higher than the moire pattern brightness formed by a grating, the patterns are richer, the preparation technical requirement is also higher, and the dynamic pattern can often achieve the effect of being difficult to imitate when being used on an anti-counterfeiting label. However, the traditional dynamic display anti-counterfeiting patterns are all arrayed patterns, which is closely related to the design of the micro-patterns. When one wants to obtain a single pattern (non-arrayed), the conventional dynamic pattern design method cannot meet the requirement. Therefore, the invention breaks the limitation of the traditional dynamic graphic array display, can obtain non-array dynamic graphics and has unique display effect, and the graphics can appear and disappear along with the change of the visual angle.
Disclosure of Invention
The invention aims to provide a design method of a non-arrayed dynamic display anti-counterfeiting pattern, which is characterized in that on the basis of a traditional micro-pattern array, a unique micro-pattern array design method is adopted to collect and rearrange the pattern, and finally, a micro-lens array is matched to obtain the non-arrayed dynamic pattern. The pattern will appear and disappear with the change of the viewing angle. Compared with the existing optical dynamic graph, the optical dynamic graph has the advantages of being bright, unlimited in pattern content and size, high in design and preparation technical requirements and the like. The structure can be used in the fields of commodity packaging and anti-counterfeiting.
The technical scheme adopted by the invention is as follows: a design method for non-array dynamic display anti-counterfeiting patterns based on microstructures comprises the following steps:
step (1), designing a micro-graphic array: the original micro-pattern array period is t, and the unit pattern width and height are w and h respectively;
step (2), amplifying the micro graphic array unit: the width W and the height H of the unit graph are amplified into W and H respectively;
step (3), collecting the pixels of the micro graphic array unit: collecting the magnified micro graphic units by using a hole with the same aperture size as the micro lens array unit; collecting from the lower left corner or the upper right corner of the magnified pattern, wherein the actual starting point depends on the period of the micro-lens array and the period of the micro-pattern array; when the period t of the micro-graphic array is less than the period p of the micro-lens array, the starting point of the acquisition process is the lower left corner of the amplified micro-graphic unit; when the period t of the micro-graphic array is greater than the period p of the micro-lens array, the starting point of the acquisition process is the upper right corner of the amplified micro-graphic unit; moving the collected positions by the moving distance every time the graph is collected until all the positions of the graph are collected; the distance of each movement of the acquisition hole in the horizontal direction and the vertical direction is respectively as follows:
Δh＝(i-1)·(p-t)
Δv＝(j-1)·(p-t)
and (4) rearranging the acquired patterns in each time according to the arrangement mode of the micro-lens array.
The method comprises the following specific steps of rearranging the collected graphs in each time according to the arrangement mode of the micro-lens array: the figure b remained in the quadrilateral collecting hole after each collectionijWill be placed in a new periodic array having a period corresponding in size to the period of the microlens array, b of whichijThe coordinates of the corresponding location placed in the new array are:
bij＝(p·(i-1),p·(j-1))
the invention has the advantages that a novel dynamic display method is provided, the visual perception of human eyes is enhanced, and on the other hand, the design and preparation of the dynamic display method have certain technical performance and are difficult to imitate.
Drawings
FIG. 1 is a schematic view of a microstructure of the present invention, wherein 101 is a microlens array, 102 is a micro pattern array, and 103 is a dynamic pattern;
FIG. 2 is a schematic diagram of a microlens array of the present invention having a period of 50 μm;
FIG. 3 is a schematic diagram of a micro-pattern array design flow.
Detailed Description
The invention is further described below with reference to the accompanying drawings and specific embodiments.
The invention relates to a design method for dynamically displaying an anti-counterfeiting pattern in a non-array manner based on a microstructure, which comprises the following steps:
and (1) designing a micro-graphic array. The period of the micro-pattern array is t, and the width and the height of the unit pattern are w and h respectively.
And (2) amplifying the micro graphic array unit. The width and height W and H of the cell pattern are enlarged as W and H, respectively.
And (3) collecting the pixels of the micro graphic array unit. And collecting the amplified micro graphic units by using a hole with the same aperture size as the micro lens array unit. The collection starts from the lower left or upper right corner of the magnified pattern, and the actual starting point depends on the period of the microlens array and the period size of the micropattern array. When the period t of the micro-graphic array is less than the period p of the micro-lens array, the starting point of the acquisition process is the lower left corner of the amplified micro-graphic unit; when the period t of the micro-pattern array is greater than the period p of the micro-lens array, the starting point of the acquisition process is the upper right corner of the magnified micro-pattern unit. Each time a collection is made, the collected positions are moved by the distance of the movement until all positions of the pattern are collected. The distance of each movement of the acquisition aperture in the horizontal and vertical directions can be expressed as:
Δh＝(i-1)·(p-t)
Δv＝(j-1)·(p-t)
wherein i and j respectively represent that the quadrilateral collecting hole moves from the starting point to the horizontal direction and the vertical direction for i times and j times respectively. Therefore, the graph part in the quadrilateral collector can be written as b after being movedij。
And (4) rearranging the acquired patterns in each time according to the arrangement mode of the micro-lens array. The figure b remained in the quadrilateral collecting hole after each collectionijWill be placed in a new periodic array with a period of a size corresponding to the period of the microlens array. Wherein b isijThe coordinates of the corresponding location placed in the new array can be written as:
bij＝(p·(i-1),p·(j-1))
when the enlarged graphic units are completely collected by the quadrilateral collecting holes, the rearranged array is the designed micro-graphic array. The rearranged micro-pattern array is combined with the corresponding micro-lens array, so that a non-array dynamic pattern can be seen.
Examples
In this embodiment, a dynamic anti-counterfeit pattern "a" is designed, and the effect is shown in fig. 1. The microlens array 101, the micropattern array 102 and the dynamic pattern 103 are shown in fig. 1(a), and the dynamic pattern is shown in fig. 1(b) as the viewing angle changes; the method is implemented by the following steps:
the period and arrangement of the microlens array are designed first. The microlens array is arranged in a quadrilateral shape, and the period size is p equal to 50 μm. Each lens is numbered and may be denoted as aijAs shown in fig. 2.
The micropattern array is then designed. The period t is 49.5 μm, the width w is 20 μm, and the height h is 25 μm, as shown in part (a) of fig. 3. At this time, the traditional dynamic anti-counterfeiting pattern can be obtained.
Next, the cell pattern of the micro pattern array is extracted and enlarged. After 4 times of magnification, the width W is 80 μm and the height H is 100 μm, as shown in fig. 3 (b).
And thirdly, acquiring the graph of the amplified graph unit. In this embodiment, the collection well is a circle having a diameter of 50 a. Since the period t of the micro pattern is 49.5 μm and is less than the period p of the micro lens is 50 μm, the start position of the capturing is located at the lower left corner of the pattern unit, and the direction is right and up, as shown in part (c) of fig. 3. The distance that the collecting hole moves from the starting point in the horizontal direction and the vertical direction at a time can be expressed as:
Δh＝(i-1)/2
Δv＝(j-1)/2
wherein, i is 1, 2 …, 160, j is 1, 2 …, 200. After each acquisition, only the pattern within the acquisition well is retained, which pattern is denoted bij, as in part (d) of FIG. 3.
Finally, the pattern acquired each time (pattern within the acquisition well) is rearranged into a new array, as shown in part (g) of FIG. 3. The position coordinates of each pattern can be expressed as:
bij＝(50(i-1),50(j-1))
when all i and j are executed, a complete micro-pattern array is obtained.
The foregoing detailed description is exemplary rather than limiting in nature. All such modifications are intended to be included within the scope of this invention as defined in the following claims and their equivalents.

Claims (2)

1. A design method for non-array dynamic display anti-counterfeiting patterns based on microstructures is characterized by comprising the following steps: the method comprises the following steps:
step (1), designing a micro-graphic array: the original micro-pattern array period is t, and the unit pattern width and height are w and h respectively;
step (2), amplifying the micro graphic array unit: the width W and the height H of the unit graph are amplified into W and H respectively;
step (3), collecting the pixels of the micro graphic array unit: collecting the magnified micro graphic units by using a hole with the same aperture size as the micro lens array unit; collecting from the lower left corner or the upper right corner of the magnified pattern, wherein the actual starting point depends on the period of the micro-lens array and the period of the micro-pattern array; when the period t of the micro-graphic array is less than the period p of the micro-lens array, the starting point of the acquisition process is the lower left corner of the amplified micro-graphic unit; when the period t of the micro-graphic array is greater than the period p of the micro-lens array, the starting point of the acquisition process is the upper right corner of the amplified micro-graphic unit; every time the image is collected, the collected position moves a preset distance until all the positions of the image are collected; the preset distance of each movement of the acquisition hole in the horizontal direction and the vertical direction is respectively as follows:
Δh＝(i-1)·(p-t)
Δv＝(j-1)·(p-t)
wherein i and j are positive integers;
and (4) rearranging the acquired patterns in each time according to the arrangement mode of the micro-lens array.
2. The method of claim 1, wherein the method comprises the following steps: the specific steps of rearranging the collected graphs each time according to the arrangement mode of the micro-lens array are as follows: each time after collectingAfter that, the pattern b remained in the quadrangular collecting holeijWill be placed in a new periodic array having a period corresponding in size to the period of the microlens array, b of whichijThe coordinates of the corresponding location placed in the new array are:
bij＝(p·(i-1),p·(j-1))
wherein i and j are positive integers.
CN201910355637.5A 2019-04-29 2019-04-29 Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure Active CN110133847B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910355637.5A CN110133847B (en) 2019-04-29 2019-04-29 Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910355637.5A CN110133847B (en) 2019-04-29 2019-04-29 Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure

Publications (2)

Publication Number Publication Date
CN110133847A CN110133847A (en) 2019-08-16
CN110133847B true CN110133847B (en) 2020-10-16

Family

ID=67575608

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910355637.5A Active CN110133847B (en) 2019-04-29 2019-04-29 Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure

Country Status (1)

Country Link
CN (1) CN110133847B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101711203A (en) * 2007-06-25 2010-05-19 德国捷德有限公司 Security element having a magnified, three-dimensional mole image
CN102466884A (en) * 2010-11-08 2012-05-23 赵建平 Micro-optical-structure-based dynamic display technology
CN102466885A (en) * 2010-11-08 2012-05-23 赵建平 Dynamic display technology based on micro-optical structure
CN103236222A (en) * 2013-04-27 2013-08-07 重庆绿色智能技术研究院 Anti-counterfeiting safety film with dynamic stereoscopic effect based on integrated imaging principle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101711203A (en) * 2007-06-25 2010-05-19 德国捷德有限公司 Security element having a magnified, three-dimensional mole image
CN102466884A (en) * 2010-11-08 2012-05-23 赵建平 Micro-optical-structure-based dynamic display technology
CN102466885A (en) * 2010-11-08 2012-05-23 赵建平 Dynamic display technology based on micro-optical structure
CN103236222A (en) * 2013-04-27 2013-08-07 重庆绿色智能技术研究院 Anti-counterfeiting safety film with dynamic stereoscopic effect based on integrated imaging principle

Also Published As

Publication number Publication date
CN110133847A (en) 2019-08-16

Similar Documents

Publication Publication Date Title
CN103765882B (en) 3-D image display device
CN105974587B (en) Head-mounted display device
US6176582B1 (en) Three-dimensional representation system
CN103492944B (en) Image-display sheet and image-display body
CN103635850A (en) Glasses-free 3D display for multiple viewers with a resonant subwavelength lens layer
CN101711203A (en) Security element having a magnified, three-dimensional mole image
CN101819375A (en) Total parallax three-dimensional display device
JP6165757B2 (en) An object comprising a surface area suitable for showing a plurality of images
CN106338786A (en) Micro-optical imaging film
CN109712232A (en) A kind of profiling object surface three-D imaging method based on light field
US20130128008A1 (en) Smart pseudoscopic-to-orthoscopic conversion (spoc) protocol for three-dimensional (3d) display
CN101276195A (en) Preparing a hologram recording medium
JP2005326803A5 (en)
CN110133847B (en) Design method for non-array dynamic display anti-counterfeiting pattern based on microstructure
CN109725429B (en) Solid-aggregation hybrid imaging stereoscopic display device
CN102466885A (en) Dynamic display technology based on micro-optical structure
CN116852892B (en) Optical anti-counterfeiting element and preparation method thereof
TW200643469A (en) Micro-optic security and image presentation system
CN103176276B (en) Image display device and method
JP2008268216A (en) Method for recognizing plural points in visual space
CN110333606A (en) A kind of optical imaging film based on micro- concentrating element
CN116224618A (en) 3D information display system for desktop display application
CN102466884A (en) Micro-optical-structure-based dynamic display technology
CN211180435U (en) Stereoscopic display device based on double diaphragms
US11092818B2 (en) Device for displaying stereoscopic images

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant