Animated security device for a document

A security device and animation technology, applied in projection devices, decorative art, holographic technology, etc., can solve the problems of deceiving the public and confusion, and achieve the effect of improving depth and making it difficult to forge

Inactive Publication Date: 2017-08-01
CCL SECURE PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes it easier for counterfeiters to create passable counterfeit versions of banknotes that are visually close enough to the visual security features of genuine banknotes to deceive or at least confuse the public

Method used

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  • Animated security device for a document
  • Animated security device for a document
  • Animated security device for a document

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] reference Figure 1a , Provide a voucher 2 including an optical device 4. According to the embodiment described herein, the optical device 4 is a security device, and the certificate 2 is a security certificate (such as banknotes, credit cards, passports, government certificates, or any other certificates that require a security level). The credential 2 optionally includes one or more additional security features 6. The additional security feature 6 can be selected from, for example, a micro-mirror security device, a holographic security device, and other optically variable devices.

[0064] Voucher 2 includes substrate 8. The optical device 4 will generally include a substrate on which the features of the device 4 are formed. In the embodiment described herein, the substrate is the same as the substrate 8 of the voucher 2. In other embodiments, the optical device 4 is formed separately from the voucher 2 and then applied to the voucher 2. In this case, the substrate of...

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PUM

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Abstract

An optical device, and preferably a security device for a security document, and methods for the production thereof are provided. The device includes a diffractive optical element (DOE) including a plurality of subregions, wherein each subregion is configured to produce a projected image corresponding to a frame of an animation, the animation includes both a static component and a variable component, and the sub-regions are arranged such that when the DOE is illuminated by a point light source and moved in at least one direction, the animation is viewable as a projected image.

Description

Technical field [0001] The present invention relates to optical devices for vouchers, such as security devices for security vouchers such as banknotes, and in particular to security devices including diffractive optical elements. Background technique [0002] Paper money (and other security documents) include visual security features that are difficult to reproduce (and therefore counterfeit) using conventional devices (such as copiers). Such visual security features usually display optical effects, so that when viewed from different positions, the visual security features take on a different appearance (optical variable effect). When making a forged copy of a security certificate, it is difficult for the counterfeit to reproduce the effect, and therefore it is difficult to make a copy of the passable security certificate. [0003] However, as the experience of counterfeiters increases, the ability to reproduce or imitate complex security features increases. Therefore, it is poss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/42B42D25/29B42D25/328G03H1/16
CPCB44F1/10B42D25/29B42D25/328B42D25/351B42D25/378B42D25/425G02B27/42G03H1/0011G03H1/2205G03H1/30G03H2001/2218G03H2001/2273G03H2001/2292G03H2210/20B42D25/23B42D25/24B42D25/25B42D25/26G02B27/4205G03B25/00
Inventor 迈克尔·哈德威克
Owner CCL SECURE PTY LTD
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