Colored, dynamic, and amplified safety film

Patent metadata

Field	Value
Publication number	US-9372287-B2
Application number	US-201214419151-A
Country	US
Kind code	B2
Filing date	Aug 3, 2012
Priority date	Aug 3, 2012
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

A colored, dynamic, and amplified security film includes a micro lens array layer, a base material layer, and a micro graphic layer. The layers meet the condition of Moore amplified imaging; the micro graphic layer is formed by a background area and a graphic area; the graphic area is distributed in the background area; the micro graphic layer includes a semi-transparent and semi-reflective metal layer, a medium layer, and a metal film layer successively from top to bottom; the metal film layer is of a planar structure; the thickness of the medium layer in the graphic area is greater than the thickness of the medium layer in the background area; and the thicknesses of semi-transparent and semi-reflective metal layers are consistent.

First claim

We claim:

1. A colored, dynamic, and amplified security film, which comprises: a micro lens array layer, a base material layer, and a micro graphic layer, said layers meet the condition of Moore amplified imaging, wherein, said micro graphic layer is formed by a background area and a graphic area, said graphic area is distributed in said background area, said micro graphic layer comprises a semi-transparent and semi-reflective metal layer, a medium layer, and a metal film layer successively from top to bottom, the metal film layer is of a planar structure, the thickness of the medium layer in said graphic area is greater than the thickness of the medium layer in said background area, the thicknesses of semi-transparent and semi-reflective metal layers are consistent and are disposed on upper surfaces of the medium layers in a profiling manner, and embedded on a lower surface of the base material layer, said semi-transparent and semi-reflective metal layer, said medium layer, and said metal film layer form a micro-cavity interference structure.

2. The colored, dynamic, and amplified security film according to claim 1 , wherein the thickness of said metal film layer is larger than 20 nanometer, the thickness of said semi-transparent and semi-reflective metal layer is less than 100 nanometer.

3. The colored, dynamic, and amplified security film according to claim 1 , wherein a grating structure is set on the upper surface of the medium layer in the graphic area, forming the medium grating layer, said semi-transparent and semi-reflective metal layer, said medium layer, said medium grating layer and said metal film layer constitute the nano-grating structure.

4. The colored, dynamic, and amplified security film according to claim 1 , wherein in the micro graphic layer, at the area corresponding to each micro lens unit, exists one or more micro graphic unit.

5. The colored, dynamic, and amplified security film according to claim 4 , wherein the micro graphic units corresponding to the adjacent micro lens units uses micro-cavity interference structure and nano-grating structure respectively.

6. The colored, dynamic, and amplified security film according to claim 4 , wherein the micro graphic units corresponding to the adjacent micro lens units uses micro-cavity interference structure with different cavity thickness or uses nano-grating structure with different parameters.

7. The colored, dynamic, and amplified security film according to claim 4 , wherein several micro graphic units corresponding to the micro lens unit uses micro-cavity interference structure and nano-grating structure respectively.

8. The colored, dynamic, and amplified security film according to claim 4 , wherein several micro graphic units corresponding to the micro lens unit uses micro-cavity interference structure with different cavity thickness or uses nano-grating structure with different parameters.

Assignees

• Ye Yan
• Chen Linsen
• Shen Su
• Zhou Yun
• Zhou Xiaohong
• Hu Jin
• Zhu Pengfei
• Pu Donglin
• Wei Guojun
• Univ Soochow

Inventors

• Ye Yan
• Chen Linsen
• Shen Su
• Zhou Yun
• Zhou Xiaohong
• Hu Jin
• Zhu Pengfei
• Pu Donglin
• Wei Guojun

Classifications

• G02B3/0056 Primary

  arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085) · CPC title

• G02B5/28

  Interference filters · CPC title

• G02B5/284

  of etalon type comprising a resonant cavity other than a thin solid film, e.g. gas, air, solid plates (etalons for fibre optic multiplexing G02B6/29358; etalons for spectral measurement G01J3/26) · CPC title

• G02B27/12

  operating by refraction only · CPC title

• G02B5/18 Primary

  Diffraction gratings {(holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44)} · CPC title