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Use of nanoparticles to tune index of refraction of layers of a polymeric matrix to optimize microoptic (MO) focus

A nanoparticle, refractive index technology used in nanotechnology for materials and surface science, optics, optical components, etc., to solve problems such as imposing limitations on the performance characteristics of the final product

Pending Publication Date: 2021-12-14
CRANE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the nature of the materials used, combined with the laws of physics used to construct micro-optical security devices, can impose constraints on the performance characteristics of the final product

Method used

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  • Use of nanoparticles to tune index of refraction of layers of a polymeric matrix to optimize microoptic (MO) focus
  • Use of nanoparticles to tune index of refraction of layers of a polymeric matrix to optimize microoptic (MO) focus
  • Use of nanoparticles to tune index of refraction of layers of a polymeric matrix to optimize microoptic (MO) focus

Examples

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Embodiment Construction

[0025] discussed below Figure 1A 10 and the various embodiments used to describe the principles of the disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure.

[0026] Figure 1A , Figure 1B with Figure 1C Examples of elements of micro-optical security devices and security documents including micro-optical security devices according to certain embodiments of the present disclosure are illustrated. for your convenience, Figure 1A , Figure 1B with Figure 1C Structural elements common to the examples are numbered identically (eg, substrate 105 ).

[0027] refer to Figure 1A As a non-limiting example, the micro-optical security device 100 and security document 101 can be constructed as Figure 1A A layered combination of some or all of the elements shown in the illustrative example of .

[0028] Such as Figure 1AAs shown in the illustrative example of , security document 101 include...

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PUM

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Abstract

A security device (100, 600, 700, 1000, 1050) includes arrangements of image icons (110a, 110b, 615, 715, 1020), arrangements of refractive image icon focusing elements(120, 605, 705, 1010) and a sealing layer (125, 600, 1005), wherein the arrangements of refractive image icon focusing elements is disposed above the arrangements of image icons such that a portion of the arrangements of refractive image icon focusing elements projects a synthetic image, such that the arrangements of refractive image icon focusing elements contact the sealing layer along a non-planar boundary. Further, at least one of the arrangements of refractive image icon focusing elements and the sealing layer comprises an organic resin mixture having a first refractive index, and at least one of the arrangements of refractive image icon focusing elements and the sealing layer comprises a low-refractive index material, the low-refractive index material having a second refractive index.

Description

technical field [0001] The present disclosure generally relates to improving the performance of security devices, such as micro-optical strips applied to or otherwise incorporated into security documents to provide an anti-counterfeiting mark of authenticity. More specifically, the present disclosure relates to, but is not limited to, the use of low refractive index ("low RI") materials to form one or more layers of a micro-optical security device. Background technique [0002] In many cases, the challenges of designing and manufacturing certain micro-optical security devices include balancing the trade-offs between achieving desired properties of the final product and the opportunities and constraints imposed by, for example, available manufacturing techniques and the laws of physics. For example, manufacturers of security documents such as banknotes, checks, and other documents that require a reliable mark of authenticity require micro-optical security devices that are one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M3/14B42D25/00B42D25/30B42D25/40D21H21/40
CPCD21H21/40B42D25/351B42D25/373G02B27/16B42D25/29B42D25/324B42D25/425B42D25/36D21H21/52D21H19/58D21H19/385B42D25/23B42D25/24B82Y30/00C08K3/105C08F265/06C08F283/065C08K3/22C08K3/30C08K2003/2227C08K2003/2241C08K2003/2244C08K2003/3036G02B1/041G02B3/0037
Inventor M·麦卡利斯特P·C·B·维格尔J·D·戈斯内尔
Owner CRANE & CO