Holographic motherboard manufacturing method and hologram based on moire fringe technology

A technology of moiré fringe and production method, which is applied in the direction of printing plate preparation, photolithographic process exposure device, optics, etc., can solve the problems such as the influence of product identification, and achieve the effect of stable product effect, strong anti-counterfeiting function, and easy production

Inactive Publication Date: 2013-02-06
WUHAN HUAGONG IMAGE TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dynamic patterns of these dynamic moiré fringes are random and difficult to control, so it is difficult to be imitated, but also because of this, when it is necessary to judge its authenticity based on its appearance, it will have a certain degree of certainty in the identification of the product. influences

Method used

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  • Holographic motherboard manufacturing method and hologram based on moire fringe technology
  • Holographic motherboard manufacturing method and hologram based on moire fringe technology
  • Holographic motherboard manufacturing method and hologram based on moire fringe technology

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example

[0040] 1) Plate making

[0041] Use CorelDRAW software to design and manufacture two groups of periodic distribution of light and dark stripe grating structures, forming such as figure 2 The stripe grating shown in 1 and image 3 The stripe grating shown in 2. The fringe grating 1 and the fringe grating 2 require the same or similar fringe period, and the superimposition can produce a special moiré fringe effect.

[0042]Select fringe grating 1 as the lithographic color map structure, use Photoshop software to process the bright and dark fringes separately, and separate the light and dark fringe areas by different colors to form a lithographic color map, as shown in Figure 4 shown.

[0043] Select the stripe grating 2 as the photolithography grayscale structure. The grayscale values ​​from 0 to 255 represent different observation angles of view, of which 128 corresponds to the front angle of view. According to the required dynamic changes, the grayscale value of the strip...

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Abstract

The invention relates to the field of optical holography anti-counterfeiting and in particular to a hologram with a special optical anti-counterfeiting effect generated on the basis of dynamic moire technology and a manufacturing method of a holographic motherboard. According to the moire fringe generated by the invention, fringe grating information is manufactured into a photoetching color graph and a photoetching gray graph by a computer processing means on the basis of a dynamic moire technology principle and then dynamic moire fringe information is transferred to the photoetching motherboard by using laser photoetching equipment. The dynamic moire effect obtained by the method can be identified under natural light; and in addition, the dynamic effect of moire fringe can be controlled, so that higher accuracy and convenience for anti-counterfeiting check of products are realized.

Description

technical field [0001] The invention relates to the field of optical holographic anti-counterfeiting, in particular to a hologram with special optical anti-counterfeiting effect and a method for making the holographic master based on dynamic moiré technology. technical background [0002] The optically variable image based on the principle of light diffraction is called Diffractive Optically Variable Image Devices (DOVID), and its optical structure is a relief type transmission grating. Order diffracted light forms a predesigned image. The image changes as designed when the viewing direction is changed. Because it can be mass-produced by molding, it is currently the most widely used optical anti-counterfeiting technology and has formed a relatively mature holographic industry. [0003] With the rapid popularization of molded holographic technology, the common technology of making holographic marks quickly loses its effective anti-counterfeiting ability. In order to more e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/32G02B27/60G03F7/20G03H1/08B41C1/05
Inventor 刘畅葛宏伟
Owner WUHAN HUAGONG IMAGE TECH & DEV
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